ci2-upstream-fs/strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ci2-upstream-fs/syz-executor3179535222 <...> Warning: Permanently added '10.128.0.73' (ED25519) to the list of known hosts. execve("ci2-upstream-fs/syz-executor3179535222", ["ci2-upstream-fs/syz-executor3179535222"], 0x7fffe1223fc0 /* 10 vars */) = 0 brk(NULL) = 0x555568d8c000 brk(0x555568d8cd80) = 0x555568d8cd80 arch_prctl(ARCH_SET_FS, 0x555568d8c400) = 0 set_tid_address(0x555568d8c6d0) = 5597 set_robust_list(0x555568d8c6e0, 24) = 0 rseq({cpu_id_start=0, cpu_id=RSEQ_CPU_ID_UNINITIALIZED, rseq_cs=NULL, flags=0, node_id=0, mm_cid=0, slice_ctrl={request=0, granted=0, __reserved=0}, __reserved=0}, 33, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlinkat(AT_FDCWD, "/proc/self/exe", "/root/ci2-upstream-fs/syz-executor3179535222", 4096) = 44 getrandom("\x6b\x3d\xb1\xba\x34\x00\xbd\x56", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555568d8cd80 brk(0x555568dadd80) = 0x555568dadd80 brk(0x555568dae000) = 0x555568dae000 mprotect(0x7f44f9282000, 20480, PROT_READ) = 0 mmap(0x1ffffffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffffffff000 mmap(0x200000000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200000000000 mmap(0x200001000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200001000000 getrandom("\x68\x61\x30\x48\x80\xcd\xe6\x6e", 8, GRND_NONBLOCK) = 8 mkdir("./syzkaller.MZEazx", 0700) = 0 chmod("./syzkaller.MZEazx", 0777) = 0 chdir("./syzkaller.MZEazx") = 0 mkdir("./0", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5598 attached , child_tidptr=0x555568d8c6d0) = 5598 [pid 5597] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5598] set_robust_list(0x555568d8c6e0, 24) = 0 [pid 5598] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5598] chdir("./0") = 0 [pid 5598] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5598] setpgid(0, 0) = 0 [pid 5598] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5598] write(3, "1000", 4) = 4 [pid 5598] close(3) = 0 [pid 5598] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5598] write(1, "executing program\n", 18) = 18 [pid 5598] memfd_create("syzkaller", 0) = 3 [pid 5598] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5598] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5598] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5598] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5598] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5598] close(3) = 0 [pid 5598] close(4) = 0 [pid 5598] mkdir("./file1", 0777) = 0 [ 84.152218][ T5598] loop0: detected capacity change from 0 to 32768 [ 84.182183][ T5598] ======================================================= [ 84.182183][ T5598] WARNING: The mand mount option has been deprecated and [pid 5598] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5598] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [ 84.182183][ T5598] and is ignored by this kernel. Remove the mand [ 84.182183][ T5598] option from the mount to silence this warning. [ 84.182183][ T5598] ======================================================= [pid 5598] chdir("./file1") = 0 [pid 5598] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5598] ioctl(4, LOOP_CLR_FD) = 0 [pid 5598] close(4) = 0 [pid 5598] exit_group(0) = ? [pid 5598] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5598, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=18 /* 0.18 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 umount2("./0/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./0/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./0/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./0/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./0/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./0/file1") = 0 umount2("./0/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./0/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./0/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./0") = 0 mkdir("./1", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5600 attached [pid 5600] set_robust_list(0x555568d8c6e0, 24 [pid 5597] <... clone resumed>, child_tidptr=0x555568d8c6d0) = 5600 [pid 5600] <... set_robust_list resumed>) = 0 [pid 5597] rt_sigprocmask(SIG_SETMASK, [] [pid 5600] rt_sigprocmask(SIG_SETMASK, [] [pid 5597] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5600] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5600] chdir("./1") = 0 [pid 5600] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5600] setpgid(0, 0) = 0 [pid 5600] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5600] write(3, "1000", 4) = 4 [pid 5600] close(3) = 0 [pid 5600] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5600] write(1, "executing program\n", 18) = 18 [pid 5600] memfd_create("syzkaller", 0) = 3 [pid 5600] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 executing program [pid 5600] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5600] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5600] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5600] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5600] close(3) = 0 [pid 5600] close(4) = 0 [pid 5600] mkdir("./file1", 0777) = 0 [pid 5600] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5600] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5600] chdir("./file1") = 0 [pid 5600] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5600] ioctl(4, LOOP_CLR_FD) = 0 [pid 5600] close(4) = 0 [pid 5600] exit_group(0) = ? [pid 5600] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5600, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=13 /* 0.13 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [ 84.649516][ T5600] loop0: detected capacity change from 0 to 32768 umount2("./1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 umount2("./1/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./1/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./1/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./1/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./1/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./1/file1") = 0 umount2("./1/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./1/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./1/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./1") = 0 mkdir("./2", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5601 attached , child_tidptr=0x555568d8c6d0) = 5601 [pid 5597] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5601] set_robust_list(0x555568d8c6e0, 24) = 0 [pid 5601] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5601] chdir("./2") = 0 [pid 5601] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5601] setpgid(0, 0) = 0 [pid 5601] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5601] write(3, "1000", 4) = 4 [pid 5601] close(3) = 0 [pid 5601] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5601] write(1, "executing program\n", 18) = 18 [pid 5601] memfd_create("syzkaller", 0) = 3 [pid 5601] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5601] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5601] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5601] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5601] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5601] close(3) = 0 [pid 5601] close(4) = 0 [pid 5601] mkdir("./file1", 0777) = 0 [pid 5601] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5601] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5601] chdir("./file1") = 0 [pid 5601] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5601] ioctl(4, LOOP_CLR_FD) = 0 [pid 5601] close(4) = 0 [pid 5601] exit_group(0) = ? [pid 5601] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5601, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=14 /* 0.14 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [ 85.072998][ T5601] loop0: detected capacity change from 0 to 32768 umount2("./2", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 umount2("./2/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./2/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./2/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./2/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./2/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./2/file1") = 0 umount2("./2/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./2/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./2/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./2") = 0 mkdir("./3", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5602 attached [pid 5602] set_robust_list(0x555568d8c6e0, 24 [pid 5597] <... clone resumed>, child_tidptr=0x555568d8c6d0) = 5602 [pid 5602] <... set_robust_list resumed>) = 0 [pid 5597] rt_sigprocmask(SIG_SETMASK, [] [pid 5602] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5597] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5602] chdir("./3") = 0 [pid 5602] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5602] setpgid(0, 0) = 0 [pid 5602] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5602] write(3, "1000", 4) = 4 [pid 5602] close(3) = 0 [pid 5602] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5602] write(1, "executing program\n", 18) = 18 executing program [pid 5602] memfd_create("syzkaller", 0) = 3 [pid 5602] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5602] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5602] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5602] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5602] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5602] close(3) = 0 [pid 5602] close(4) = 0 [pid 5602] mkdir("./file1", 0777) = 0 [pid 5602] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5602] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5602] chdir("./file1") = 0 [pid 5602] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5602] ioctl(4, LOOP_CLR_FD) = 0 [pid 5602] close(4) = 0 [pid 5602] exit_group(0) = ? [ 85.485722][ T5602] loop0: detected capacity change from 0 to 32768 [pid 5602] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5602, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=16 /* 0.16 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./3", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./3", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 umount2("./3/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./3/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./3/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./3/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./3/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./3/file1") = 0 umount2("./3/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./3/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./3/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./3") = 0 mkdir("./4", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5603 attached , child_tidptr=0x555568d8c6d0) = 5603 [pid 5597] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5603] set_robust_list(0x555568d8c6e0, 24) = 0 [pid 5603] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5603] chdir("./4") = 0 [pid 5603] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5603] setpgid(0, 0) = 0 [pid 5603] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5603] write(3, "1000", 4) = 4 [pid 5603] close(3) = 0 [pid 5603] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5603] write(1, "executing program\n", 18) = 18 [pid 5603] memfd_create("syzkaller", 0) = 3 [pid 5603] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5603] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5603] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5603] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5603] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5603] close(3) = 0 [pid 5603] close(4) = 0 [pid 5603] mkdir("./file1", 0777) = 0 [pid 5603] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5603] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5603] chdir("./file1") = 0 [pid 5603] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5603] ioctl(4, LOOP_CLR_FD) = 0 [pid 5603] close(4) = 0 [pid 5603] exit_group(0) = ? [pid 5603] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5603, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=15 /* 0.15 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./4", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./4", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 [ 85.918356][ T5603] loop0: detected capacity change from 0 to 32768 umount2("./4/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./4/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./4/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./4/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./4/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./4/file1") = 0 umount2("./4/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./4/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./4/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./4") = 0 mkdir("./5", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5604 attached [pid 5604] set_robust_list(0x555568d8c6e0, 24 [pid 5597] <... clone resumed>, child_tidptr=0x555568d8c6d0) = 5604 [pid 5604] <... set_robust_list resumed>) = 0 [pid 5597] rt_sigprocmask(SIG_SETMASK, [] [pid 5604] rt_sigprocmask(SIG_SETMASK, [] [pid 5597] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5604] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5604] chdir("./5") = 0 [pid 5604] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5604] setpgid(0, 0) = 0 [pid 5604] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5604] write(3, "1000", 4) = 4 [pid 5604] close(3) = 0 [pid 5604] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5604] write(1, "executing program\n", 18) = 18 executing program [pid 5604] memfd_create("syzkaller", 0) = 3 [pid 5604] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5604] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5604] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5604] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5604] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5604] close(3) = 0 [pid 5604] close(4) = 0 [pid 5604] mkdir("./file1", 0777) = 0 [pid 5604] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5604] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5604] chdir("./file1") = 0 [pid 5604] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5604] ioctl(4, LOOP_CLR_FD) = 0 [pid 5604] close(4) = 0 [pid 5604] exit_group(0) = ? [pid 5604] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5604, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=16 /* 0.16 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./5", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./5", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 [ 86.335658][ T5604] loop0: detected capacity change from 0 to 32768 umount2("./5/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./5/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./5/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./5/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./5/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./5/file1") = 0 umount2("./5/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./5/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./5/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./5") = 0 mkdir("./6", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5605 attached [pid 5605] set_robust_list(0x555568d8c6e0, 24 [pid 5597] <... clone resumed>, child_tidptr=0x555568d8c6d0) = 5605 [pid 5597] rt_sigprocmask(SIG_SETMASK, [] [pid 5605] <... set_robust_list resumed>) = 0 [pid 5597] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5605] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5605] chdir("./6") = 0 [pid 5605] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5605] setpgid(0, 0) = 0 [pid 5605] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5605] write(3, "1000", 4) = 4 [pid 5605] close(3) = 0 [pid 5605] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5605] write(1, "executing program\n", 18) = 18 [pid 5605] memfd_create("syzkaller", 0) = 3 [pid 5605] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5605] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5605] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5605] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5605] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5605] close(3) = 0 [pid 5605] close(4) = 0 [pid 5605] mkdir("./file1", 0777) = 0 [pid 5605] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5605] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5605] chdir("./file1") = 0 [pid 5605] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5605] ioctl(4, LOOP_CLR_FD) = 0 [pid 5605] close(4) = 0 [pid 5605] exit_group(0) = ? [pid 5605] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5605, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=14 /* 0.14 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./6", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./6", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [ 86.726607][ T5605] loop0: detected capacity change from 0 to 32768 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 umount2("./6/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./6/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./6/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./6/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./6/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./6/file1") = 0 umount2("./6/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./6/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./6/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./6") = 0 mkdir("./7", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5606 attached , child_tidptr=0x555568d8c6d0) = 5606 [pid 5597] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5606] set_robust_list(0x555568d8c6e0, 24) = 0 [pid 5606] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5606] chdir("./7") = 0 [pid 5606] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5606] setpgid(0, 0) = 0 [pid 5606] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5606] write(3, "1000", 4) = 4 [pid 5606] close(3) = 0 [pid 5606] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5606] write(1, "executing program\n", 18) = 18 executing program [pid 5606] memfd_create("syzkaller", 0) = 3 [pid 5606] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5606] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5606] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5606] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5606] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5606] close(3) = 0 [pid 5606] close(4) = 0 [pid 5606] mkdir("./file1", 0777) = 0 [pid 5606] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5606] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5606] chdir("./file1") = 0 [pid 5606] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5606] ioctl(4, LOOP_CLR_FD) = 0 [pid 5606] close(4) = 0 [pid 5606] exit_group(0) = ? [pid 5606] +++ exited with 0 +++ [ 87.098647][ T5606] loop0: detected capacity change from 0 to 32768 --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5606, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=13 /* 0.13 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./7", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./7", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 umount2("./7/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./7/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./7/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./7/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./7/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./7/file1") = 0 umount2("./7/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./7/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./7/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./7") = 0 mkdir("./8", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5607 attached , child_tidptr=0x555568d8c6d0) = 5607 [pid 5607] set_robust_list(0x555568d8c6e0, 24 [pid 5597] rt_sigprocmask(SIG_SETMASK, [] [pid 5607] <... set_robust_list resumed>) = 0 [pid 5597] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5607] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5607] chdir("./8") = 0 [pid 5607] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5607] setpgid(0, 0) = 0 [pid 5607] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5607] write(3, "1000", 4) = 4 [pid 5607] close(3) = 0 [pid 5607] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5607] write(1, "executing program\n", 18) = 18 executing program [pid 5607] memfd_create("syzkaller", 0) = 3 [pid 5607] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5607] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5607] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5607] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5607] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5607] close(3) = 0 [pid 5607] close(4) = 0 [pid 5607] mkdir("./file1", 0777) = 0 [pid 5607] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5607] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5607] chdir("./file1") = 0 [pid 5607] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5607] ioctl(4, LOOP_CLR_FD) = 0 [pid 5607] close(4) = 0 [pid 5607] exit_group(0) = ? [pid 5607] +++ exited with 0 +++ [ 87.548600][ T5607] loop0: detected capacity change from 0 to 32768 --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5607, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=12 /* 0.12 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./8", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./8", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 umount2("./8/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./8/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./8/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./8/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./8/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./8/file1") = 0 umount2("./8/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./8/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./8/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./8") = 0 mkdir("./9", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5610 attached , child_tidptr=0x555568d8c6d0) = 5610 [pid 5610] set_robust_list(0x555568d8c6e0, 24) = 0 [pid 5610] rt_sigprocmask(SIG_SETMASK, [] [pid 5597] rt_sigprocmask(SIG_SETMASK, [] [pid 5610] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5597] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5610] chdir("./9") = 0 [pid 5610] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5610] setpgid(0, 0) = 0 [pid 5610] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5610] write(3, "1000", 4) = 4 [pid 5610] close(3) = 0 [pid 5610] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5610] write(1, "executing program\n", 18) = 18 [pid 5610] memfd_create("syzkaller", 0) = 3 [pid 5610] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [ 87.832131][ T999] cfg80211: failed to load regulatory.db [pid 5610] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5610] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5610] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5610] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5610] close(3) = 0 [pid 5610] close(4) = 0 [pid 5610] mkdir("./file1", 0777) = 0 [pid 5610] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5610] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5610] chdir("./file1") = 0 [pid 5610] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5610] ioctl(4, LOOP_CLR_FD) = 0 [pid 5610] close(4) = 0 [pid 5610] exit_group(0) = ? [pid 5610] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5610, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=12 /* 0.12 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./9", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 87.994514][ T5610] loop0: detected capacity change from 0 to 32768 openat(AT_FDCWD, "./9", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 umount2("./9/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./9/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./9/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./9/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./9/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./9/file1") = 0 umount2("./9/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./9/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./9/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./9") = 0 mkdir("./10", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5612 attached , child_tidptr=0x555568d8c6d0) = 5612 [pid 5597] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5612] set_robust_list(0x555568d8c6e0, 24) = 0 [pid 5612] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5612] chdir("./10") = 0 [pid 5612] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5612] setpgid(0, 0) = 0 [pid 5612] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5612] write(3, "1000", 4) = 4 [pid 5612] close(3) = 0 [pid 5612] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5612] write(1, "executing program\n", 18) = 18 executing program [pid 5612] memfd_create("syzkaller", 0) = 3 [pid 5612] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5612] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5612] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5612] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5612] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5612] close(3) = 0 [pid 5612] close(4) = 0 [pid 5612] mkdir("./file1", 0777) = 0 [pid 5612] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5612] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5612] chdir("./file1") = 0 [pid 5612] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5612] ioctl(4, LOOP_CLR_FD) = 0 [pid 5612] close(4) = 0 [pid 5612] exit_group(0) = ? [pid 5612] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5612, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=13 /* 0.13 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./10", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./10", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 umount2("./10/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./10/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./10/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./10/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./10/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./10/file1") = 0 umount2("./10/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./10/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./10/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./10") = 0 mkdir("./11", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5614 attached , child_tidptr=0x555568d8c6d0) = 5614 [pid 5614] set_robust_list(0x555568d8c6e0, 24 [pid 5597] rt_sigprocmask(SIG_SETMASK, [] [pid 5614] <... set_robust_list resumed>) = 0 [pid 5597] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5614] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5614] chdir("./11") = 0 [pid 5614] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5614] setpgid(0, 0) = 0 [pid 5614] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5614] write(3, "1000", 4) = 4 [pid 5614] close(3) = 0 [pid 5614] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5614] write(1, "executing program\n", 18) = 18 executing program [pid 5614] memfd_create("syzkaller", 0) = 3 [pid 5614] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5614] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5614] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5614] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5614] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5614] close(3) = 0 [pid 5614] close(4) = 0 [pid 5614] mkdir("./file1", 0777) = 0 [pid 5614] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5614] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5614] chdir("./file1") = 0 [pid 5614] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5614] ioctl(4, LOOP_CLR_FD) = 0 [pid 5614] close(4) = 0 [pid 5614] exit_group(0) = ? [pid 5614] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5614, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=14 /* 0.14 s */} --- umount2("./11", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./11", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 umount2("./11/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./11/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./11/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./11/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./11/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./11/file1") = 0 umount2("./11/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./11/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./11/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./11") = 0 mkdir("./12", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5617 attached [pid 5617] set_robust_list(0x555568d8c6e0, 24 [pid 5597] <... clone resumed>, child_tidptr=0x555568d8c6d0) = 5617 [pid 5617] <... set_robust_list resumed>) = 0 [pid 5597] rt_sigprocmask(SIG_SETMASK, [] [pid 5617] rt_sigprocmask(SIG_SETMASK, [] [pid 5597] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5617] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5617] chdir("./12") = 0 [pid 5617] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5617] setpgid(0, 0) = 0 [pid 5617] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5617] write(3, "1000", 4) = 4 [pid 5617] close(3) = 0 [pid 5617] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5617] write(1, "executing program\n", 18) = 18 executing program [pid 5617] memfd_create("syzkaller", 0) = 3 [pid 5617] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5617] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5617] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5617] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5617] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5617] close(3) = 0 [pid 5617] close(4) = 0 [pid 5617] mkdir("./file1", 0777) = 0 [pid 5617] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5617] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5617] chdir("./file1") = 0 [pid 5617] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [ 89.219144][ T5617] set_capacity_and_notify: 2 callbacks suppressed [ 89.219163][ T5617] loop0: detected capacity change from 0 to 32768 [pid 5617] ioctl(4, LOOP_CLR_FD) = 0 [pid 5617] close(4) = 0 [pid 5617] exit_group(0) = ? [pid 5617] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5617, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=13 /* 0.13 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./12", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./12", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 umount2("./12/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./12/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./12/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./12/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./12/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./12/file1") = 0 umount2("./12/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./12/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./12/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./12") = 0 mkdir("./13", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5618 attached , child_tidptr=0x555568d8c6d0) = 5618 [pid 5597] rt_sigprocmask(SIG_SETMASK, [] [pid 5618] set_robust_list(0x555568d8c6e0, 24 [pid 5597] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5618] <... set_robust_list resumed>) = 0 [pid 5618] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5618] chdir("./13") = 0 [pid 5618] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5618] setpgid(0, 0) = 0 [pid 5618] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5618] write(3, "1000", 4) = 4 [pid 5618] close(3) = 0 [pid 5618] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5618] write(1, "executing program\n", 18) = 18 [pid 5618] memfd_create("syzkaller", 0) = 3 [pid 5618] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5618] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5618] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5618] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5618] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5618] close(3) = 0 [pid 5618] close(4) = 0 [pid 5618] mkdir("./file1", 0777) = 0 [pid 5618] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5618] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5618] chdir("./file1") = 0 [pid 5618] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5618] ioctl(4, LOOP_CLR_FD) = 0 [pid 5618] close(4) = 0 [pid 5618] exit_group(0) = ? [pid 5618] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5618, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=15 /* 0.15 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./13", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./13", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 [ 89.582001][ T5618] loop0: detected capacity change from 0 to 32768 umount2("./13/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./13/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./13/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./13/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./13/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./13/file1") = 0 umount2("./13/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./13/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./13/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./13") = 0 mkdir("./14", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5619 attached , child_tidptr=0x555568d8c6d0) = 5619 [pid 5619] set_robust_list(0x555568d8c6e0, 24 [pid 5597] rt_sigprocmask(SIG_SETMASK, [] [pid 5619] <... set_robust_list resumed>) = 0 [pid 5597] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5619] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5619] chdir("./14") = 0 [pid 5619] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5619] setpgid(0, 0) = 0 [pid 5619] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5619] write(3, "1000", 4) = 4 [pid 5619] close(3) = 0 [pid 5619] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5619] write(1, "executing program\n", 18) = 18 [pid 5619] memfd_create("syzkaller", 0) = 3 [pid 5619] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5619] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5619] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5619] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5619] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5619] close(3) = 0 [pid 5619] close(4) = 0 [pid 5619] mkdir("./file1", 0777) = 0 [pid 5619] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5619] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5619] chdir("./file1") = 0 [pid 5619] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5619] ioctl(4, LOOP_CLR_FD) = 0 [pid 5619] close(4) = 0 [pid 5619] exit_group(0) = ? [pid 5619] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5619, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=13 /* 0.13 s */} --- [ 89.961080][ T5619] loop0: detected capacity change from 0 to 32768 umount2("./14", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./14", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 umount2("./14/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./14/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./14/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./14/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./14/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./14/file1") = 0 umount2("./14/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./14/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./14/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./14") = 0 mkdir("./15", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5620 attached , child_tidptr=0x555568d8c6d0) = 5620 [pid 5620] set_robust_list(0x555568d8c6e0, 24 [pid 5597] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5620] <... set_robust_list resumed>) = 0 [pid 5620] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5620] chdir("./15") = 0 [pid 5620] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5620] setpgid(0, 0) = 0 [pid 5620] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5620] write(3, "1000", 4) = 4 [pid 5620] close(3) = 0 [pid 5620] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5620] write(1, "executing program\n", 18) = 18 executing program [pid 5620] memfd_create("syzkaller", 0) = 3 [pid 5620] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5620] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5620] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5620] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5620] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5620] close(3) = 0 [pid 5620] close(4) = 0 [pid 5620] mkdir("./file1", 0777) = 0 [pid 5620] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5620] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5620] chdir("./file1") = 0 [pid 5620] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5620] ioctl(4, LOOP_CLR_FD) = 0 [pid 5620] close(4) = 0 [pid 5620] exit_group(0) = ? [pid 5620] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5620, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=12 /* 0.12 s */} --- umount2("./15", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./15", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 [ 90.341533][ T5620] loop0: detected capacity change from 0 to 32768 umount2("./15/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./15/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./15/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./15/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./15/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./15/file1") = 0 umount2("./15/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./15/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./15/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./15") = 0 mkdir("./16", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5621 attached , child_tidptr=0x555568d8c6d0) = 5621 [pid 5621] set_robust_list(0x555568d8c6e0, 24) = 0 [pid 5621] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5597] rt_sigprocmask(SIG_SETMASK, [] [pid 5621] chdir("./16" [pid 5597] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5621] <... chdir resumed>) = 0 [pid 5621] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5621] setpgid(0, 0) = 0 [pid 5621] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5621] write(3, "1000", 4) = 4 [pid 5621] close(3) = 0 [pid 5621] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5621] write(1, "executing program\n", 18) = 18 [pid 5621] memfd_create("syzkaller", 0) = 3 [pid 5621] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 executing program [pid 5621] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5621] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5621] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5621] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5621] close(3) = 0 [pid 5621] close(4) = 0 [pid 5621] mkdir("./file1", 0777) = 0 [pid 5621] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5621] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5621] chdir("./file1") = 0 [pid 5621] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5621] ioctl(4, LOOP_CLR_FD) = 0 [pid 5621] close(4) = 0 [pid 5621] exit_group(0) = ? [ 90.719032][ T5621] loop0: detected capacity change from 0 to 32768 [pid 5621] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5621, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=17 /* 0.17 s */} --- umount2("./16", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./16", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 umount2("./16/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./16/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./16/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./16/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./16/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./16/file1") = 0 umount2("./16/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./16/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./16/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./16") = 0 mkdir("./17", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5622 attached [pid 5622] set_robust_list(0x555568d8c6e0, 24 [pid 5597] <... clone resumed>, child_tidptr=0x555568d8c6d0) = 5622 [pid 5622] <... set_robust_list resumed>) = 0 [pid 5597] rt_sigprocmask(SIG_SETMASK, [] [pid 5622] rt_sigprocmask(SIG_SETMASK, [] [pid 5597] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5622] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5622] chdir("./17") = 0 [pid 5622] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5622] setpgid(0, 0) = 0 [pid 5622] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5622] write(3, "1000", 4) = 4 [pid 5622] close(3) = 0 [pid 5622] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5622] write(1, "executing program\n", 18) = 18 executing program [pid 5622] memfd_create("syzkaller", 0) = 3 [pid 5622] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5622] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5622] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5622] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5622] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5622] close(3) = 0 [pid 5622] close(4) = 0 [pid 5622] mkdir("./file1", 0777) = 0 [pid 5622] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5622] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5622] chdir("./file1") = 0 [pid 5622] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5622] ioctl(4, LOOP_CLR_FD) = 0 [pid 5622] close(4) = 0 [pid 5622] exit_group(0) = ? [pid 5622] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5622, si_uid=0, si_status=0, si_utime=0, si_stime=17 /* 0.17 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [ 91.141772][ T5622] loop0: detected capacity change from 0 to 32768 umount2("./17", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./17", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 umount2("./17/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./17/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./17/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./17/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./17/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./17/file1") = 0 umount2("./17/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./17/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./17/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./17") = 0 mkdir("./18", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555568d8c6d0) = 5623 rt_sigprocmask(SIG_SETMASK, []ci2-upstream-fs/strace-static-x86_64: Process 5623 attached , NULL, 8) = 0 [pid 5623] set_robust_list(0x555568d8c6e0, 24) = 0 [pid 5623] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5623] chdir("./18") = 0 [pid 5623] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5623] setpgid(0, 0) = 0 [pid 5623] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5623] write(3, "1000", 4) = 4 [pid 5623] close(3) = 0 [pid 5623] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5623] write(1, "executing program\n", 18) = 18 executing program [pid 5623] memfd_create("syzkaller", 0) = 3 [pid 5623] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5623] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5623] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5623] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5623] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5623] close(3) = 0 [pid 5623] close(4) = 0 [pid 5623] mkdir("./file1", 0777) = 0 [pid 5623] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5623] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5623] chdir("./file1") = 0 [pid 5623] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5623] ioctl(4, LOOP_CLR_FD) = 0 [ 91.544417][ T5623] loop0: detected capacity change from 0 to 32768 [pid 5623] close(4) = 0 [pid 5623] exit_group(0) = ? [pid 5623] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5623, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=14 /* 0.14 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./18", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./18", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 umount2("./18/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./18/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./18/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./18/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./18/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./18/file1") = 0 umount2("./18/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./18/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./18/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./18") = 0 mkdir("./19", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5624 attached [pid 5624] set_robust_list(0x555568d8c6e0, 24 [pid 5597] <... clone resumed>, child_tidptr=0x555568d8c6d0) = 5624 [pid 5624] <... set_robust_list resumed>) = 0 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5597] rt_sigprocmask(SIG_SETMASK, [] [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5597] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5624] chdir("./19") = 0 [pid 5624] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5624] setpgid(0, 0) = 0 [pid 5624] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5624] write(3, "1000", 4) = 4 [pid 5624] close(3) = 0 [pid 5624] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5624] write(1, "executing program\n", 18) = 18 executing program [pid 5624] memfd_create("syzkaller", 0) = 3 [pid 5624] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5624] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5624] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5624] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5624] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5624] close(3) = 0 [pid 5624] close(4) = 0 [pid 5624] mkdir("./file1", 0777) = 0 [pid 5624] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5624] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5624] chdir("./file1") = 0 [pid 5624] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5624] ioctl(4, LOOP_CLR_FD) = 0 [pid 5624] close(4) = 0 [pid 5624] exit_group(0) = ? [pid 5624] +++ exited with 0 +++ [ 91.975405][ T5624] loop0: detected capacity change from 0 to 32768 --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5624, si_uid=0, si_status=0, si_utime=0, si_stime=14 /* 0.14 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./19", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./19", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 umount2("./19/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./19/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./19/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./19/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./19/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./19/file1") = 0 umount2("./19/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./19/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./19/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./19") = 0 mkdir("./20", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5625 attached , child_tidptr=0x555568d8c6d0) = 5625 [pid 5597] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5625] set_robust_list(0x555568d8c6e0, 24) = 0 [pid 5625] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5625] chdir("./20") = 0 [pid 5625] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5625] setpgid(0, 0) = 0 [pid 5625] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5625] write(3, "1000", 4) = 4 [pid 5625] close(3) = 0 [pid 5625] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5625] write(1, "executing program\n", 18) = 18 executing program [pid 5625] memfd_create("syzkaller", 0) = 3 [pid 5625] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5625] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5625] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5625] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5625] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5625] close(3) = 0 [pid 5625] close(4) = 0 [pid 5625] mkdir("./file1", 0777) = 0 [pid 5625] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5625] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5625] chdir("./file1") = 0 [pid 5625] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5625] ioctl(4, LOOP_CLR_FD) = 0 [pid 5625] close(4) = 0 [pid 5625] exit_group(0) = ? [pid 5625] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5625, si_uid=0, si_status=0, si_utime=0, si_stime=15 /* 0.15 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [ 92.353868][ T5625] loop0: detected capacity change from 0 to 32768 umount2("./20", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./20", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 umount2("./20/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./20/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./20/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./20/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./20/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./20/file1") = 0 umount2("./20/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./20/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./20/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./20") = 0 mkdir("./21", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5626 attached , child_tidptr=0x555568d8c6d0) = 5626 [pid 5597] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5626] set_robust_list(0x555568d8c6e0, 24) = 0 [pid 5626] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5626] chdir("./21") = 0 [pid 5626] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5626] setpgid(0, 0) = 0 [pid 5626] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5626] write(3, "1000", 4) = 4 [pid 5626] close(3) = 0 [pid 5626] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5626] write(1, "executing program\n", 18) = 18 executing program [pid 5626] memfd_create("syzkaller", 0) = 3 [pid 5626] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5626] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5626] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5626] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5626] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5626] close(3) = 0 [pid 5626] close(4) = 0 [pid 5626] mkdir("./file1", 0777) = 0 [pid 5626] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5626] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5626] chdir("./file1") = 0 [pid 5626] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5626] ioctl(4, LOOP_CLR_FD) = 0 [pid 5626] close(4) = 0 [pid 5626] exit_group(0) = ? [pid 5626] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5626, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=14 /* 0.14 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./21", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./21", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 [ 92.772221][ T5626] loop0: detected capacity change from 0 to 32768 umount2("./21/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./21/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./21/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./21/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./21/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./21/file1") = 0 umount2("./21/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./21/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./21/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./21") = 0 mkdir("./22", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5627 attached , child_tidptr=0x555568d8c6d0) = 5627 [pid 5597] rt_sigprocmask(SIG_SETMASK, [] [pid 5627] set_robust_list(0x555568d8c6e0, 24 [pid 5597] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5627] <... set_robust_list resumed>) = 0 [pid 5627] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5627] chdir("./22") = 0 [pid 5627] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5627] setpgid(0, 0) = 0 [pid 5627] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5627] write(3, "1000", 4) = 4 [pid 5627] close(3) = 0 [pid 5627] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5627] write(1, "executing program\n", 18) = 18 executing program [pid 5627] memfd_create("syzkaller", 0) = 3 [pid 5627] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5627] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5627] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5627] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5627] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5627] close(3) = 0 [pid 5627] close(4) = 0 [pid 5627] mkdir("./file1", 0777) = 0 [pid 5627] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5627] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5627] chdir("./file1") = 0 [pid 5627] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5627] ioctl(4, LOOP_CLR_FD) = 0 [pid 5627] close(4) = 0 [pid 5627] exit_group(0) = ? [pid 5627] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5627, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=13 /* 0.13 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./22", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./22", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 umount2("./22/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./22/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./22/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./22/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./22/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./22/file1") = 0 umount2("./22/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./22/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./22/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./22") = 0 mkdir("./23", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5628 attached [pid 5628] set_robust_list(0x555568d8c6e0, 24 [pid 5597] <... clone resumed>, child_tidptr=0x555568d8c6d0) = 5628 [pid 5628] <... set_robust_list resumed>) = 0 [pid 5597] rt_sigprocmask(SIG_SETMASK, [] [pid 5628] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5628] chdir("./23") = 0 [pid 5628] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5628] setpgid(0, 0) = 0 [pid 5628] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5597] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5628] <... openat resumed>) = 3 [pid 5628] write(3, "1000", 4) = 4 [pid 5628] close(3) = 0 [pid 5628] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5628] write(1, "executing program\n", 18) = 18 executing program [pid 5628] memfd_create("syzkaller", 0) = 3 [pid 5628] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5628] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5628] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5628] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5628] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5628] close(3) = 0 [pid 5628] close(4) = 0 [pid 5628] mkdir("./file1", 0777) = 0 [pid 5628] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5628] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5628] chdir("./file1") = 0 [pid 5628] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5628] ioctl(4, LOOP_CLR_FD) = 0 [pid 5628] close(4) = 0 [pid 5628] exit_group(0) = ? [pid 5628] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5628, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=17 /* 0.17 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./23", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./23", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 umount2("./23/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./23/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./23/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./23/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./23/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./23/file1") = 0 umount2("./23/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./23/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./23/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./23") = 0 mkdir("./24", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5629 attached , child_tidptr=0x555568d8c6d0) = 5629 [pid 5597] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5629] set_robust_list(0x555568d8c6e0, 24) = 0 [pid 5629] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5629] chdir("./24") = 0 [pid 5629] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5629] setpgid(0, 0) = 0 [pid 5629] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5629] write(3, "1000", 4) = 4 [pid 5629] close(3) = 0 [pid 5629] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5629] write(1, "executing program\n", 18) = 18 [pid 5629] memfd_create("syzkaller", 0) = 3 executing program [pid 5629] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5629] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5629] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5629] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5629] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5629] close(3) = 0 [pid 5629] close(4) = 0 [pid 5629] mkdir("./file1", 0777) = 0 [pid 5629] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5629] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5629] chdir("./file1") = 0 [pid 5629] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5629] ioctl(4, LOOP_CLR_FD) = 0 [pid 5629] close(4) = 0 [pid 5629] exit_group(0) = ? [pid 5629] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5629, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=14 /* 0.14 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./24", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./24", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 umount2("./24/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./24/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./24/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./24/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./24/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./24/file1") = 0 umount2("./24/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./24/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./24/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./24") = 0 mkdir("./25", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5630 attached , child_tidptr=0x555568d8c6d0) = 5630 [pid 5630] set_robust_list(0x555568d8c6e0, 24) = 0 [pid 5597] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5630] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5630] chdir("./25") = 0 [pid 5630] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5630] setpgid(0, 0) = 0 [pid 5630] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5630] write(3, "1000", 4) = 4 [pid 5630] close(3) = 0 [pid 5630] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5630] write(1, "executing program\n", 18) = 18 [pid 5630] memfd_create("syzkaller", 0) = 3 [pid 5630] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5630] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5630] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5630] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5630] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5630] close(3) = 0 [pid 5630] close(4) = 0 [pid 5630] mkdir("./file1", 0777) = 0 [pid 5630] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5630] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5630] chdir("./file1") = 0 [pid 5630] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5630] ioctl(4, LOOP_CLR_FD) = 0 [pid 5630] close(4) = 0 [pid 5630] exit_group(0) = ? [pid 5630] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5630, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=13 /* 0.13 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./25", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./25", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 [ 94.281582][ T5630] set_capacity_and_notify: 3 callbacks suppressed [ 94.281601][ T5630] loop0: detected capacity change from 0 to 32768 umount2("./25/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./25/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./25/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./25/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./25/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./25/file1") = 0 umount2("./25/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./25/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./25/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./25") = 0 mkdir("./26", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555568d8c6d0) = 5631 ci2-upstream-fs/strace-static-x86_64: Process 5631 attached [pid 5597] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5631] set_robust_list(0x555568d8c6e0, 24) = 0 [pid 5631] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5631] chdir("./26") = 0 [pid 5631] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5631] setpgid(0, 0) = 0 [pid 5631] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5631] write(3, "1000", 4) = 4 [pid 5631] close(3) = 0 [pid 5631] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5631] write(1, "executing program\n", 18) = 18 [pid 5631] memfd_create("syzkaller", 0) = 3 [pid 5631] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5631] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5631] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5631] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5631] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5631] close(3) = 0 [pid 5631] close(4) = 0 [pid 5631] mkdir("./file1", 0777) = 0 [pid 5631] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5631] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5631] chdir("./file1") = 0 [pid 5631] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5631] ioctl(4, LOOP_CLR_FD) = 0 [pid 5631] close(4) = 0 [pid 5631] exit_group(0) = ? [pid 5631] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5631, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=16 /* 0.16 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./26", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./26", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 [ 94.743082][ T5631] loop0: detected capacity change from 0 to 32768 umount2("./26/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./26/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./26/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./26/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./26/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./26/file1") = 0 umount2("./26/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./26/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./26/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./26") = 0 mkdir("./27", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5632 attached [pid 5632] set_robust_list(0x555568d8c6e0, 24 [pid 5597] <... clone resumed>, child_tidptr=0x555568d8c6d0) = 5632 [pid 5632] <... set_robust_list resumed>) = 0 [pid 5597] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5632] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5632] chdir("./27") = 0 [pid 5632] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5632] setpgid(0, 0) = 0 [pid 5632] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5632] write(3, "1000", 4) = 4 [pid 5632] close(3) = 0 [pid 5632] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5632] write(1, "executing program\n", 18) = 18 [pid 5632] memfd_create("syzkaller", 0) = 3 [pid 5632] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5632] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5632] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5632] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5632] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5632] close(3) = 0 [pid 5632] close(4) = 0 [pid 5632] mkdir("./file1", 0777) = 0 [pid 5632] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5632] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5632] chdir("./file1") = 0 [pid 5632] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5632] ioctl(4, LOOP_CLR_FD) = 0 [pid 5632] close(4) = 0 [pid 5632] exit_group(0) = ? [pid 5632] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5632, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=13 /* 0.13 s */} --- [ 95.127796][ T5632] loop0: detected capacity change from 0 to 32768 restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./27", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./27", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 umount2("./27/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./27/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./27/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./27/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./27/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./27/file1") = 0 umount2("./27/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./27/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./27/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./27") = 0 mkdir("./28", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5633 attached , child_tidptr=0x555568d8c6d0) = 5633 [pid 5597] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5633] set_robust_list(0x555568d8c6e0, 24) = 0 [pid 5633] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5633] chdir("./28") = 0 [pid 5633] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5633] setpgid(0, 0) = 0 [pid 5633] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5633] write(3, "1000", 4) = 4 [pid 5633] close(3) = 0 [pid 5633] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5633] write(1, "executing program\n", 18) = 18 executing program [pid 5633] memfd_create("syzkaller", 0) = 3 [pid 5633] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5633] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5633] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5633] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5633] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5633] close(3) = 0 [pid 5633] close(4) = 0 [pid 5633] mkdir("./file1", 0777) = 0 [pid 5633] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5633] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5633] chdir("./file1") = 0 [pid 5633] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5633] ioctl(4, LOOP_CLR_FD) = 0 [pid 5633] close(4) = 0 [pid 5633] exit_group(0) = ? [pid 5633] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5633, si_uid=0, si_status=0, si_utime=0, si_stime=16 /* 0.16 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [ 95.510202][ T5633] loop0: detected capacity change from 0 to 32768 umount2("./28", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./28", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 umount2("./28/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./28/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./28/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./28/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./28/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./28/file1") = 0 umount2("./28/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./28/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./28/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./28") = 0 mkdir("./29", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5634 attached , child_tidptr=0x555568d8c6d0) = 5634 [pid 5597] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5634] set_robust_list(0x555568d8c6e0, 24) = 0 [pid 5634] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5634] chdir("./29") = 0 [pid 5634] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5634] setpgid(0, 0) = 0 [pid 5634] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5634] write(3, "1000", 4) = 4 [pid 5634] close(3) = 0 [pid 5634] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5634] write(1, "executing program\n", 18) = 18 executing program [pid 5634] memfd_create("syzkaller", 0) = 3 [pid 5634] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5634] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5634] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5634] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5634] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5634] close(3) = 0 [pid 5634] close(4) = 0 [pid 5634] mkdir("./file1", 0777) = 0 [pid 5634] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5634] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5634] chdir("./file1") = 0 [pid 5634] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5634] ioctl(4, LOOP_CLR_FD) = 0 [pid 5634] close(4) = 0 [pid 5634] exit_group(0) = ? [pid 5634] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5634, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=12 /* 0.12 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./29", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./29", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 [ 95.907956][ T5634] loop0: detected capacity change from 0 to 32768 umount2("./29/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./29/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./29/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./29/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./29/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./29/file1") = 0 umount2("./29/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./29/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./29/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./29") = 0 mkdir("./30", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555568d8c6d0) = 5635 ci2-upstream-fs/strace-static-x86_64: Process 5635 attached [pid 5597] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5635] set_robust_list(0x555568d8c6e0, 24) = 0 [pid 5635] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5635] chdir("./30") = 0 [pid 5635] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5635] setpgid(0, 0) = 0 [pid 5635] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5635] write(3, "1000", 4) = 4 [pid 5635] close(3) = 0 [pid 5635] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5635] write(1, "executing program\n", 18) = 18 [pid 5635] memfd_create("syzkaller", 0) = 3 [pid 5635] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5635] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5635] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5635] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5635] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5635] close(3) = 0 [pid 5635] close(4) = 0 [pid 5635] mkdir("./file1", 0777) = 0 [pid 5635] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5635] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5635] chdir("./file1") = 0 [pid 5635] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5635] ioctl(4, LOOP_CLR_FD) = 0 [pid 5635] close(4) = 0 [pid 5635] exit_group(0) = ? [pid 5635] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5635, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=12 /* 0.12 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./30", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./30", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 [ 96.265651][ T5635] loop0: detected capacity change from 0 to 32768 umount2("./30/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./30/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./30/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./30/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./30/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./30/file1") = 0 umount2("./30/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./30/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./30/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./30") = 0 mkdir("./31", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5636 attached , child_tidptr=0x555568d8c6d0) = 5636 [pid 5636] set_robust_list(0x555568d8c6e0, 24) = 0 [pid 5636] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5636] chdir("./31") = 0 [pid 5636] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5636] setpgid(0, 0) = 0 [pid 5597] rt_sigprocmask(SIG_SETMASK, [] [pid 5636] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5597] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5636] <... openat resumed>) = 3 [pid 5636] write(3, "1000", 4) = 4 [pid 5636] close(3) = 0 [pid 5636] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5636] write(1, "executing program\n", 18) = 18 executing program [pid 5636] memfd_create("syzkaller", 0) = 3 [pid 5636] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5636] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5636] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5636] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5636] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5636] close(3) = 0 [pid 5636] close(4) = 0 [pid 5636] mkdir("./file1", 0777) = 0 [pid 5636] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5636] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5636] chdir("./file1") = 0 [pid 5636] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5636] ioctl(4, LOOP_CLR_FD) = 0 [pid 5636] close(4) = 0 [pid 5636] exit_group(0) = ? [ 96.705944][ T5636] loop0: detected capacity change from 0 to 32768 [pid 5636] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5636, si_uid=0, si_status=0, si_utime=5 /* 0.05 s */, si_stime=16 /* 0.16 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./31", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./31", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 umount2("./31/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./31/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./31/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./31/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./31/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./31/file1") = 0 umount2("./31/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./31/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./31/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./31") = 0 mkdir("./32", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5637 attached [pid 5637] set_robust_list(0x555568d8c6e0, 24) = 0 [pid 5637] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5637] chdir("./32") = 0 [pid 5637] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5637] setpgid(0, 0 [pid 5597] <... clone resumed>, child_tidptr=0x555568d8c6d0) = 5637 [pid 5637] <... setpgid resumed>) = 0 [pid 5637] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5597] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5637] <... openat resumed>) = 3 [pid 5637] write(3, "1000", 4) = 4 [pid 5637] close(3) = 0 [pid 5637] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5637] write(1, "executing program\n", 18) = 18 executing program [pid 5637] memfd_create("syzkaller", 0) = 3 [pid 5637] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5637] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5637] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5637] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5637] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5637] close(3) = 0 [pid 5637] close(4) = 0 [pid 5637] mkdir("./file1", 0777) = 0 [pid 5637] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5637] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5637] chdir("./file1") = 0 [pid 5637] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5637] ioctl(4, LOOP_CLR_FD) = 0 [pid 5637] close(4) = 0 [pid 5637] exit_group(0) = ? [pid 5637] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5637, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=15 /* 0.15 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [ 97.117071][ T5637] loop0: detected capacity change from 0 to 32768 umount2("./32", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./32", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 umount2("./32/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./32/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./32/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./32/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./32/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./32/file1") = 0 umount2("./32/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./32/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./32/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./32") = 0 mkdir("./33", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5638 attached [pid 5638] set_robust_list(0x555568d8c6e0, 24 [pid 5597] <... clone resumed>, child_tidptr=0x555568d8c6d0) = 5638 [pid 5638] <... set_robust_list resumed>) = 0 [pid 5597] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5638] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5638] chdir("./33") = 0 [pid 5638] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5638] setpgid(0, 0) = 0 [pid 5638] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5638] write(3, "1000", 4) = 4 [pid 5638] close(3) = 0 [pid 5638] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5638] write(1, "executing program\n", 18) = 18 executing program [pid 5638] memfd_create("syzkaller", 0) = 3 [pid 5638] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5638] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5638] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5638] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5638] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5638] close(3) = 0 [pid 5638] close(4) = 0 [pid 5638] mkdir("./file1", 0777) = 0 [pid 5638] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5638] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5638] chdir("./file1") = 0 [pid 5638] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5638] ioctl(4, LOOP_CLR_FD) = 0 [pid 5638] close(4) = 0 [pid 5638] exit_group(0) = ? [pid 5638] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5638, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=14 /* 0.14 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [ 97.505974][ T5638] loop0: detected capacity change from 0 to 32768 umount2("./33", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./33", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 umount2("./33/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./33/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./33/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./33/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./33/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./33/file1") = 0 umount2("./33/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./33/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./33/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./33") = 0 mkdir("./34", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5639 attached , child_tidptr=0x555568d8c6d0) = 5639 [pid 5597] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5639] set_robust_list(0x555568d8c6e0, 24) = 0 [pid 5639] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5639] chdir("./34") = 0 [pid 5639] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5639] setpgid(0, 0) = 0 [pid 5639] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5639] write(3, "1000", 4) = 4 [pid 5639] close(3) = 0 [pid 5639] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5639] write(1, "executing program\n", 18) = 18 executing program [pid 5639] memfd_create("syzkaller", 0) = 3 [pid 5639] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5639] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5639] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5639] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5639] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5639] close(3) = 0 [pid 5639] close(4) = 0 [pid 5639] mkdir("./file1", 0777) = 0 [pid 5639] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5639] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5639] chdir("./file1") = 0 [pid 5639] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5639] ioctl(4, LOOP_CLR_FD) = 0 [pid 5639] close(4) = 0 [pid 5639] exit_group(0) = ? [pid 5639] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5639, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=13 /* 0.13 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./34", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./34", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 [ 97.938434][ T5639] loop0: detected capacity change from 0 to 32768 umount2("./34/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./34/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./34/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./34/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./34/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./34/file1") = 0 umount2("./34/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./34/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./34/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./34") = 0 mkdir("./35", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5640 attached [pid 5640] set_robust_list(0x555568d8c6e0, 24 [pid 5597] <... clone resumed>, child_tidptr=0x555568d8c6d0) = 5640 [pid 5640] <... set_robust_list resumed>) = 0 [pid 5597] rt_sigprocmask(SIG_SETMASK, [] [pid 5640] rt_sigprocmask(SIG_SETMASK, [] [pid 5597] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5640] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5640] chdir("./35") = 0 [pid 5640] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5640] setpgid(0, 0) = 0 [pid 5640] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5640] write(3, "1000", 4) = 4 [pid 5640] close(3) = 0 [pid 5640] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5640] write(1, "executing program\n", 18) = 18 executing program [pid 5640] memfd_create("syzkaller", 0) = 3 [pid 5640] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5640] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5640] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5640] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5640] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5640] close(3) = 0 [pid 5640] close(4) = 0 [pid 5640] mkdir("./file1", 0777) = 0 [pid 5640] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5640] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5640] chdir("./file1") = 0 [pid 5640] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5640] ioctl(4, LOOP_CLR_FD) = 0 [pid 5640] close(4) = 0 [pid 5640] exit_group(0) = ? [pid 5640] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5640, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=13 /* 0.13 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./35", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./35", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 umount2("./35/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./35/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./35/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./35/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./35/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./35/file1") = 0 umount2("./35/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./35/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./35/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./35") = 0 mkdir("./36", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5641 attached , child_tidptr=0x555568d8c6d0) = 5641 [pid 5597] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5641] set_robust_list(0x555568d8c6e0, 24) = 0 [pid 5641] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5641] chdir("./36") = 0 [pid 5641] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5641] setpgid(0, 0) = 0 [pid 5641] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5641] write(3, "1000", 4) = 4 [pid 5641] close(3) = 0 [pid 5641] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5641] write(1, "executing program\n", 18) = 18 [pid 5641] memfd_create("syzkaller", 0) = 3 [pid 5641] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5641] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5641] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5641] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5641] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5641] close(3) = 0 [pid 5641] close(4) = 0 [pid 5641] mkdir("./file1", 0777) = 0 [pid 5641] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5641] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5641] chdir("./file1") = 0 [pid 5641] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5641] ioctl(4, LOOP_CLR_FD) = 0 [pid 5641] close(4) = 0 [pid 5641] exit_group(0) = ? [pid 5641] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5641, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=11 /* 0.11 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./36", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./36", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 umount2("./36/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./36/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./36/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./36/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./36/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./36/file1") = 0 umount2("./36/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./36/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./36/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./36") = 0 mkdir("./37", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5642 attached [pid 5642] set_robust_list(0x555568d8c6e0, 24 [pid 5597] <... clone resumed>, child_tidptr=0x555568d8c6d0) = 5642 [pid 5597] rt_sigprocmask(SIG_SETMASK, [] [pid 5642] <... set_robust_list resumed>) = 0 [pid 5597] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5642] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5642] chdir("./37") = 0 [pid 5642] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5642] setpgid(0, 0) = 0 [pid 5642] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5642] write(3, "1000", 4) = 4 [pid 5642] close(3) = 0 [pid 5642] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5642] write(1, "executing program\n", 18) = 18 [pid 5642] memfd_create("syzkaller", 0) = 3 [pid 5642] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5642] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5642] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5642] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5642] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5642] close(3) = 0 [pid 5642] close(4) = 0 [pid 5642] mkdir("./file1", 0777) = 0 [pid 5642] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5642] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5642] chdir("./file1") = 0 [pid 5642] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5642] ioctl(4, LOOP_CLR_FD) = 0 [pid 5642] close(4) = 0 [pid 5642] exit_group(0) = ? [pid 5642] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5642, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=14 /* 0.14 s */} --- umount2("./37", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./37", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 umount2("./37/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./37/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./37/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./37/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./37/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./37/file1") = 0 umount2("./37/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./37/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./37/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./37") = 0 mkdir("./38", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5643 attached [pid 5643] set_robust_list(0x555568d8c6e0, 24 [pid 5597] <... clone resumed>, child_tidptr=0x555568d8c6d0) = 5643 [pid 5643] <... set_robust_list resumed>) = 0 [pid 5597] rt_sigprocmask(SIG_SETMASK, [] [pid 5643] rt_sigprocmask(SIG_SETMASK, [] [pid 5597] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5643] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5643] chdir("./38") = 0 [pid 5643] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5643] setpgid(0, 0) = 0 [pid 5643] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5643] write(3, "1000", 4) = 4 [pid 5643] close(3) = 0 [pid 5643] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5643] write(1, "executing program\n", 18) = 18 executing program [pid 5643] memfd_create("syzkaller", 0) = 3 [pid 5643] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5643] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5643] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5643] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5643] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5643] close(3) = 0 [pid 5643] close(4) = 0 [pid 5643] mkdir("./file1", 0777) = 0 [pid 5643] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5643] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5643] chdir("./file1") = 0 [pid 5643] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5643] ioctl(4, LOOP_CLR_FD) = 0 [pid 5643] close(4) = 0 [pid 5643] exit_group(0) = ? [pid 5643] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5643, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=13 /* 0.13 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./38", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./38", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 [ 99.429254][ T5643] set_capacity_and_notify: 3 callbacks suppressed [ 99.429283][ T5643] loop0: detected capacity change from 0 to 32768 umount2("./38/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./38/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./38/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./38/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./38/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./38/file1") = 0 umount2("./38/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./38/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./38/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./38") = 0 mkdir("./39", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5644 attached , child_tidptr=0x555568d8c6d0) = 5644 [pid 5597] rt_sigprocmask(SIG_SETMASK, [] [pid 5644] set_robust_list(0x555568d8c6e0, 24 [pid 5597] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5644] <... set_robust_list resumed>) = 0 [pid 5644] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5644] chdir("./39") = 0 [pid 5644] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5644] setpgid(0, 0) = 0 [pid 5644] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5644] write(3, "1000", 4) = 4 [pid 5644] close(3) = 0 [pid 5644] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5644] write(1, "executing program\n", 18) = 18 executing program [pid 5644] memfd_create("syzkaller", 0) = 3 [pid 5644] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5644] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5644] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5644] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5644] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5644] close(3) = 0 [pid 5644] close(4) = 0 [pid 5644] mkdir("./file1", 0777) = 0 [pid 5644] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5644] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5644] chdir("./file1") = 0 [pid 5644] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5644] ioctl(4, LOOP_CLR_FD) = 0 [pid 5644] close(4) = 0 [pid 5644] exit_group(0) = ? [ 99.781876][ T5644] loop0: detected capacity change from 0 to 32768 [pid 5644] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5644, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=14 /* 0.14 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./39", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./39", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 umount2("./39/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./39/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./39/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./39/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./39/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./39/file1") = 0 umount2("./39/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./39/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./39/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./39") = 0 mkdir("./40", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5645 attached , child_tidptr=0x555568d8c6d0) = 5645 [pid 5597] rt_sigprocmask(SIG_SETMASK, [] [pid 5645] set_robust_list(0x555568d8c6e0, 24 [pid 5597] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5645] <... set_robust_list resumed>) = 0 [pid 5645] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5645] chdir("./40") = 0 [pid 5645] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5645] setpgid(0, 0) = 0 [pid 5645] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5645] write(3, "1000", 4) = 4 [pid 5645] close(3) = 0 [pid 5645] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5645] write(1, "executing program\n", 18) = 18 executing program [pid 5645] memfd_create("syzkaller", 0) = 3 [pid 5645] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5645] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5645] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5645] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5645] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5645] close(3) = 0 [pid 5645] close(4) = 0 [pid 5645] mkdir("./file1", 0777) = 0 [pid 5645] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5645] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5645] chdir("./file1") = 0 [pid 5645] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5645] ioctl(4, LOOP_CLR_FD) = 0 [pid 5645] close(4) = 0 [pid 5645] exit_group(0) = ? [pid 5645] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5645, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=16 /* 0.16 s */} --- [ 100.207756][ T5645] loop0: detected capacity change from 0 to 32768 restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./40", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./40", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 umount2("./40/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./40/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./40/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./40/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./40/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./40/file1") = 0 umount2("./40/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./40/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./40/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./40") = 0 mkdir("./41", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5646 attached , child_tidptr=0x555568d8c6d0) = 5646 [pid 5646] set_robust_list(0x555568d8c6e0, 24) = 0 [pid 5597] rt_sigprocmask(SIG_SETMASK, [] [pid 5646] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5597] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5646] chdir("./41") = 0 [pid 5646] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5646] setpgid(0, 0) = 0 [pid 5646] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5646] write(3, "1000", 4) = 4 [pid 5646] close(3) = 0 [pid 5646] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5646] write(1, "executing program\n", 18) = 18 [pid 5646] memfd_create("syzkaller", 0) = 3 [pid 5646] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5646] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5646] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5646] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5646] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5646] close(3) = 0 [pid 5646] close(4) = 0 [pid 5646] mkdir("./file1", 0777) = 0 [pid 5646] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5646] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5646] chdir("./file1") = 0 [pid 5646] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5646] ioctl(4, LOOP_CLR_FD) = 0 [pid 5646] close(4) = 0 [pid 5646] exit_group(0) = ? [pid 5646] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5646, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=20 /* 0.20 s */} --- [ 100.597939][ T5646] loop0: detected capacity change from 0 to 32768 restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./41", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./41", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 umount2("./41/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./41/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./41/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./41/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./41/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./41/file1") = 0 umount2("./41/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./41/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./41/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./41") = 0 mkdir("./42", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5648 attached , child_tidptr=0x555568d8c6d0) = 5648 [pid 5597] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5648] set_robust_list(0x555568d8c6e0, 24) = 0 [pid 5648] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5648] chdir("./42") = 0 [pid 5648] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5648] setpgid(0, 0) = 0 [pid 5648] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5648] write(3, "1000", 4) = 4 [pid 5648] close(3) = 0 [pid 5648] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5648] write(1, "executing program\n", 18) = 18 [pid 5648] memfd_create("syzkaller", 0) = 3 [pid 5648] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5648] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5648] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5648] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5648] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5648] close(3) = 0 [pid 5648] close(4) = 0 [pid 5648] mkdir("./file1", 0777) = 0 [pid 5648] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5648] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5648] chdir("./file1") = 0 [pid 5648] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5648] ioctl(4, LOOP_CLR_FD) = 0 [pid 5648] close(4) = 0 [pid 5648] exit_group(0) = ? [pid 5648] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5648, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=15 /* 0.15 s */} --- umount2("./42", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./42", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [ 101.013774][ T5648] loop0: detected capacity change from 0 to 32768 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 umount2("./42/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./42/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./42/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./42/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./42/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./42/file1") = 0 umount2("./42/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./42/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./42/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./42") = 0 mkdir("./43", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5649 attached [pid 5649] set_robust_list(0x555568d8c6e0, 24 [pid 5597] <... clone resumed>, child_tidptr=0x555568d8c6d0) = 5649 [pid 5649] <... set_robust_list resumed>) = 0 [pid 5597] rt_sigprocmask(SIG_SETMASK, [] [pid 5649] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5597] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5649] chdir("./43") = 0 [pid 5649] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5649] setpgid(0, 0) = 0 [pid 5649] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5649] write(3, "1000", 4) = 4 [pid 5649] close(3) = 0 [pid 5649] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5649] write(1, "executing program\n", 18) = 18 executing program [pid 5649] memfd_create("syzkaller", 0) = 3 [pid 5649] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5649] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5649] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5649] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5649] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5649] close(3) = 0 [pid 5649] close(4) = 0 [pid 5649] mkdir("./file1", 0777) = 0 [pid 5649] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5649] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5649] chdir("./file1") = 0 [pid 5649] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5649] ioctl(4, LOOP_CLR_FD) = 0 [pid 5649] close(4) = 0 [pid 5649] exit_group(0) = ? [pid 5649] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5649, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=12 /* 0.12 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./43", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./43", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 [ 101.432967][ T5649] loop0: detected capacity change from 0 to 32768 umount2("./43/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./43/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./43/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./43/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./43/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./43/file1") = 0 umount2("./43/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./43/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./43/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./43") = 0 mkdir("./44", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5650 attached [pid 5650] set_robust_list(0x555568d8c6e0, 24 [pid 5597] <... clone resumed>, child_tidptr=0x555568d8c6d0) = 5650 [pid 5650] <... set_robust_list resumed>) = 0 [pid 5597] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5650] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5650] chdir("./44") = 0 [pid 5650] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5650] setpgid(0, 0) = 0 [pid 5650] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5650] write(3, "1000", 4) = 4 [pid 5650] close(3) = 0 [pid 5650] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5650] write(1, "executing program\n", 18) = 18 executing program [pid 5650] memfd_create("syzkaller", 0) = 3 [pid 5650] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5650] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5650] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5650] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5650] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5650] close(3) = 0 [pid 5650] close(4) = 0 [pid 5650] mkdir("./file1", 0777) = 0 [pid 5650] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5650] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5650] chdir("./file1") = 0 [pid 5650] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5650] ioctl(4, LOOP_CLR_FD) = 0 [pid 5650] close(4) = 0 [ 101.795707][ T5650] loop0: detected capacity change from 0 to 32768 [pid 5650] exit_group(0) = ? [pid 5650] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5650, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=14 /* 0.14 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./44", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./44", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 umount2("./44/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./44/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./44/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./44/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./44/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./44/file1") = 0 umount2("./44/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./44/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./44/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./44") = 0 mkdir("./45", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5651 attached , child_tidptr=0x555568d8c6d0) = 5651 [pid 5597] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5651] set_robust_list(0x555568d8c6e0, 24) = 0 [pid 5651] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5651] chdir("./45") = 0 [pid 5651] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5651] setpgid(0, 0) = 0 [pid 5651] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5651] write(3, "1000", 4) = 4 [pid 5651] close(3) = 0 [pid 5651] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5651] write(1, "executing program\n", 18) = 18 [pid 5651] memfd_create("syzkaller", 0) = 3 [pid 5651] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5651] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5651] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5651] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5651] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5651] close(3) = 0 [pid 5651] close(4) = 0 [pid 5651] mkdir("./file1", 0777) = 0 [pid 5651] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5651] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5651] chdir("./file1") = 0 [pid 5651] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5651] ioctl(4, LOOP_CLR_FD) = 0 [pid 5651] close(4) = 0 [pid 5651] exit_group(0) = ? [pid 5651] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5651, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=11 /* 0.11 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./45", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./45", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 [ 102.218737][ T5651] loop0: detected capacity change from 0 to 32768 umount2("./45/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./45/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./45/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./45/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./45/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./45/file1") = 0 umount2("./45/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./45/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./45/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./45") = 0 mkdir("./46", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5652 attached [pid 5652] set_robust_list(0x555568d8c6e0, 24 [pid 5597] <... clone resumed>, child_tidptr=0x555568d8c6d0) = 5652 [pid 5652] <... set_robust_list resumed>) = 0 [pid 5652] rt_sigprocmask(SIG_SETMASK, [] [pid 5597] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5652] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5652] chdir("./46") = 0 [pid 5652] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5652] setpgid(0, 0) = 0 [pid 5652] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5652] write(3, "1000", 4) = 4 [pid 5652] close(3) = 0 [pid 5652] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5652] write(1, "executing program\n", 18) = 18 executing program [pid 5652] memfd_create("syzkaller", 0) = 3 [pid 5652] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5652] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5652] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5652] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5652] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5652] close(3) = 0 [pid 5652] close(4) = 0 [pid 5652] mkdir("./file1", 0777) = 0 [pid 5652] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5652] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5652] chdir("./file1") = 0 [pid 5652] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5652] ioctl(4, LOOP_CLR_FD) = 0 [pid 5652] close(4) = 0 [pid 5652] exit_group(0) = ? [pid 5652] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5652, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=14 /* 0.14 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [ 102.587622][ T5652] loop0: detected capacity change from 0 to 32768 umount2("./46", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./46", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 umount2("./46/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./46/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./46/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./46/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./46/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./46/file1") = 0 umount2("./46/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./46/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./46/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./46") = 0 mkdir("./47", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5653 attached [pid 5653] set_robust_list(0x555568d8c6e0, 24 [pid 5597] <... clone resumed>, child_tidptr=0x555568d8c6d0) = 5653 [pid 5653] <... set_robust_list resumed>) = 0 [pid 5653] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5597] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5653] chdir("./47") = 0 [pid 5653] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5653] setpgid(0, 0) = 0 [pid 5653] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5653] write(3, "1000", 4) = 4 [pid 5653] close(3) = 0 [pid 5653] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5653] write(1, "executing program\n", 18) = 18 executing program [pid 5653] memfd_create("syzkaller", 0) = 3 [pid 5653] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5653] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5653] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5653] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5653] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5653] close(3) = 0 [pid 5653] close(4) = 0 [pid 5653] mkdir("./file1", 0777) = 0 [pid 5653] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5653] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5653] chdir("./file1") = 0 [pid 5653] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5653] ioctl(4, LOOP_CLR_FD) = 0 [pid 5653] close(4) = 0 [pid 5653] exit_group(0) = ? [pid 5653] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5653, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=14 /* 0.14 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./47", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./47", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 [ 103.025675][ T5653] loop0: detected capacity change from 0 to 32768 umount2("./47/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./47/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./47/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./47/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./47/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./47/file1") = 0 umount2("./47/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./47/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./47/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./47") = 0 mkdir("./48", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5654 attached , child_tidptr=0x555568d8c6d0) = 5654 [pid 5597] rt_sigprocmask(SIG_SETMASK, [] [pid 5654] set_robust_list(0x555568d8c6e0, 24 [pid 5597] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5654] <... set_robust_list resumed>) = 0 [pid 5654] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5654] chdir("./48") = 0 [pid 5654] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5654] setpgid(0, 0) = 0 [pid 5654] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5654] write(3, "1000", 4) = 4 [pid 5654] close(3) = 0 [pid 5654] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5654] write(1, "executing program\n", 18) = 18 [pid 5654] memfd_create("syzkaller", 0) = 3 [pid 5654] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5654] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5654] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5654] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5654] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5654] close(3) = 0 [pid 5654] close(4) = 0 [pid 5654] mkdir("./file1", 0777) = 0 [pid 5654] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5654] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5654] chdir("./file1") = 0 [pid 5654] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5654] ioctl(4, LOOP_CLR_FD) = 0 [pid 5654] close(4) = 0 [pid 5654] exit_group(0) = ? [pid 5654] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5654, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=13 /* 0.13 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./48", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./48", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 umount2("./48/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./48/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./48/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./48/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./48/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./48/file1") = 0 umount2("./48/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./48/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./48/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./48") = 0 mkdir("./49", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5655 attached , child_tidptr=0x555568d8c6d0) = 5655 [pid 5655] set_robust_list(0x555568d8c6e0, 24 [pid 5597] rt_sigprocmask(SIG_SETMASK, [] [pid 5655] <... set_robust_list resumed>) = 0 [pid 5597] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5655] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5655] chdir("./49") = 0 [pid 5655] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5655] setpgid(0, 0) = 0 [pid 5655] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5655] write(3, "1000", 4) = 4 [pid 5655] close(3) = 0 [pid 5655] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5655] write(1, "executing program\n", 18) = 18 executing program [pid 5655] memfd_create("syzkaller", 0) = 3 [pid 5655] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5655] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5655] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5655] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5655] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5655] close(3) = 0 [pid 5655] close(4) = 0 [pid 5655] mkdir("./file1", 0777) = 0 [pid 5655] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5655] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5655] chdir("./file1") = 0 [pid 5655] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5655] ioctl(4, LOOP_CLR_FD) = 0 [pid 5655] close(4) = 0 [pid 5655] exit_group(0) = ? [pid 5655] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5655, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=13 /* 0.13 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./49", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./49", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 umount2("./49/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./49/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./49/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./49/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./49/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./49/file1") = 0 umount2("./49/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./49/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./49/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./49") = 0 mkdir("./50", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5656 attached , child_tidptr=0x555568d8c6d0) = 5656 [pid 5597] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5656] set_robust_list(0x555568d8c6e0, 24) = 0 [pid 5656] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5656] chdir("./50") = 0 [pid 5656] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5656] setpgid(0, 0) = 0 [pid 5656] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5656] write(3, "1000", 4) = 4 [pid 5656] close(3) = 0 [pid 5656] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5656] write(1, "executing program\n", 18) = 18 [pid 5656] memfd_create("syzkaller", 0) = 3 [pid 5656] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5656] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5656] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5656] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5656] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5656] close(3) = 0 [pid 5656] close(4) = 0 [pid 5656] mkdir("./file1", 0777) = 0 [pid 5656] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5656] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5656] chdir("./file1") = 0 [pid 5656] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5656] ioctl(4, LOOP_CLR_FD) = 0 [pid 5656] close(4) = 0 [pid 5656] exit_group(0) = ? [pid 5656] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5656, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=14 /* 0.14 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./50", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./50", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 umount2("./50/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./50/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./50/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./50/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./50/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./50/file1") = 0 umount2("./50/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./50/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./50/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./50") = 0 mkdir("./51", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5657 attached , child_tidptr=0x555568d8c6d0) = 5657 [pid 5597] rt_sigprocmask(SIG_SETMASK, [] [pid 5657] set_robust_list(0x555568d8c6e0, 24) = 0 [pid 5597] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5657] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5657] chdir("./51") = 0 [pid 5657] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5657] setpgid(0, 0) = 0 [pid 5657] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5657] write(3, "1000", 4) = 4 [pid 5657] close(3) = 0 [pid 5657] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5657] write(1, "executing program\n", 18) = 18 executing program [pid 5657] memfd_create("syzkaller", 0) = 3 [pid 5657] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5657] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5657] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5657] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5657] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5657] close(3) = 0 [pid 5657] close(4) = 0 [pid 5657] mkdir("./file1", 0777) = 0 [pid 5657] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5657] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5657] chdir("./file1") = 0 [pid 5657] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5657] ioctl(4, LOOP_CLR_FD) = 0 [pid 5657] close(4) = 0 [pid 5657] exit_group(0) = ? [pid 5657] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5657, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=11 /* 0.11 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./51", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./51", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 [ 104.537308][ T5657] set_capacity_and_notify: 3 callbacks suppressed [ 104.537339][ T5657] loop0: detected capacity change from 0 to 32768 umount2("./51/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./51/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./51/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./51/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./51/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./51/file1") = 0 umount2("./51/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./51/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./51/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./51") = 0 mkdir("./52", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5658 attached , child_tidptr=0x555568d8c6d0) = 5658 [pid 5597] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5658] set_robust_list(0x555568d8c6e0, 24) = 0 [pid 5658] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5658] chdir("./52") = 0 [pid 5658] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5658] setpgid(0, 0) = 0 [pid 5658] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5658] write(3, "1000", 4) = 4 [pid 5658] close(3) = 0 [pid 5658] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5658] write(1, "executing program\n", 18) = 18 executing program [pid 5658] memfd_create("syzkaller", 0) = 3 [pid 5658] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5658] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5658] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5658] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5658] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5658] close(3) = 0 [pid 5658] close(4) = 0 [pid 5658] mkdir("./file1", 0777) = 0 [pid 5658] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5658] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5658] chdir("./file1") = 0 [pid 5658] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5658] ioctl(4, LOOP_CLR_FD) = 0 [pid 5658] close(4) = 0 [pid 5658] exit_group(0) = ? [pid 5658] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5658, si_uid=0, si_status=0, si_utime=0, si_stime=15 /* 0.15 s */} --- umount2("./52", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 104.922423][ T5658] loop0: detected capacity change from 0 to 32768 openat(AT_FDCWD, "./52", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 umount2("./52/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./52/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./52/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./52/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./52/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./52/file1") = 0 umount2("./52/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./52/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./52/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./52") = 0 mkdir("./53", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5659 attached [pid 5659] set_robust_list(0x555568d8c6e0, 24 [pid 5597] <... clone resumed>, child_tidptr=0x555568d8c6d0) = 5659 [pid 5597] rt_sigprocmask(SIG_SETMASK, [] [pid 5659] <... set_robust_list resumed>) = 0 [pid 5597] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5659] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5659] chdir("./53") = 0 [pid 5659] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5659] setpgid(0, 0) = 0 [pid 5659] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5659] write(3, "1000", 4) = 4 [pid 5659] close(3) = 0 [pid 5659] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5659] write(1, "executing program\n", 18) = 18 executing program [pid 5659] memfd_create("syzkaller", 0) = 3 [pid 5659] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5659] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5659] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5659] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5659] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5659] close(3) = 0 [pid 5659] close(4) = 0 [pid 5659] mkdir("./file1", 0777) = 0 [pid 5659] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5659] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5659] chdir("./file1") = 0 [pid 5659] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5659] ioctl(4, LOOP_CLR_FD) = 0 [pid 5659] close(4) = 0 [pid 5659] exit_group(0) = ? [pid 5659] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5659, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=10 /* 0.10 s */} --- [ 105.312779][ T5659] loop0: detected capacity change from 0 to 32768 restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./53", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./53", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 umount2("./53/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./53/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./53/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./53/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./53/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./53/file1") = 0 umount2("./53/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./53/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./53/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./53") = 0 mkdir("./54", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5660 attached [pid 5660] set_robust_list(0x555568d8c6e0, 24 [pid 5597] <... clone resumed>, child_tidptr=0x555568d8c6d0) = 5660 [pid 5660] <... set_robust_list resumed>) = 0 [pid 5597] rt_sigprocmask(SIG_SETMASK, [] [pid 5660] rt_sigprocmask(SIG_SETMASK, [] [pid 5597] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5660] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5660] chdir("./54") = 0 [pid 5660] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5660] setpgid(0, 0) = 0 [pid 5660] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5660] write(3, "1000", 4) = 4 [pid 5660] close(3) = 0 [pid 5660] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5660] write(1, "executing program\n", 18) = 18 executing program [pid 5660] memfd_create("syzkaller", 0) = 3 [pid 5660] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5660] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5660] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5660] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5660] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5660] close(3) = 0 [pid 5660] close(4) = 0 [pid 5660] mkdir("./file1", 0777) = 0 [pid 5660] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5660] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5660] chdir("./file1") = 0 [pid 5660] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5660] ioctl(4, LOOP_CLR_FD) = 0 [pid 5660] close(4) = 0 [pid 5660] exit_group(0) = ? [pid 5660] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5660, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=15 /* 0.15 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./54", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./54", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 [ 105.718433][ T5660] loop0: detected capacity change from 0 to 32768 umount2("./54/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./54/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./54/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./54/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./54/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./54/file1") = 0 umount2("./54/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./54/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./54/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./54") = 0 mkdir("./55", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5661 attached , child_tidptr=0x555568d8c6d0) = 5661 [pid 5597] rt_sigprocmask(SIG_SETMASK, [] [pid 5661] set_robust_list(0x555568d8c6e0, 24 [pid 5597] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5661] <... set_robust_list resumed>) = 0 [pid 5661] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5661] chdir("./55") = 0 [pid 5661] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5661] setpgid(0, 0) = 0 [pid 5661] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5661] write(3, "1000", 4) = 4 [pid 5661] close(3) = 0 [pid 5661] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5661] write(1, "executing program\n", 18) = 18 executing program [pid 5661] memfd_create("syzkaller", 0) = 3 [pid 5661] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5661] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5661] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5661] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5661] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5661] close(3) = 0 [pid 5661] close(4) = 0 [pid 5661] mkdir("./file1", 0777) = 0 [pid 5661] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5661] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5661] chdir("./file1") = 0 [pid 5661] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5661] ioctl(4, LOOP_CLR_FD) = 0 [pid 5661] close(4) = 0 [pid 5661] exit_group(0) = ? [pid 5661] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5661, si_uid=0, si_status=0, si_utime=0, si_stime=15 /* 0.15 s */} --- [ 106.097987][ T5661] loop0: detected capacity change from 0 to 32768 restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./55", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./55", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 umount2("./55/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./55/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./55/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./55/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./55/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./55/file1") = 0 umount2("./55/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./55/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./55/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./55") = 0 mkdir("./56", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5662 attached [pid 5662] set_robust_list(0x555568d8c6e0, 24 [pid 5597] <... clone resumed>, child_tidptr=0x555568d8c6d0) = 5662 [pid 5662] <... set_robust_list resumed>) = 0 [pid 5597] rt_sigprocmask(SIG_SETMASK, [] [pid 5662] rt_sigprocmask(SIG_SETMASK, [] [pid 5597] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5662] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5662] chdir("./56") = 0 [pid 5662] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5662] setpgid(0, 0) = 0 [pid 5662] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5662] write(3, "1000", 4) = 4 [pid 5662] close(3) = 0 [pid 5662] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5662] write(1, "executing program\n", 18) = 18 executing program [pid 5662] memfd_create("syzkaller", 0) = 3 [pid 5662] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5662] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5662] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5662] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5662] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5662] close(3) = 0 [pid 5662] close(4) = 0 [pid 5662] mkdir("./file1", 0777) = 0 [pid 5662] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5662] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5662] chdir("./file1") = 0 [pid 5662] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5662] ioctl(4, LOOP_CLR_FD) = 0 [pid 5662] close(4) = 0 [pid 5662] exit_group(0) = ? [pid 5662] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5662, si_uid=0, si_status=0, si_utime=0, si_stime=15 /* 0.15 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [ 106.554670][ T5662] loop0: detected capacity change from 0 to 32768 umount2("./56", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./56", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 umount2("./56/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./56/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./56/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./56/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./56/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./56/file1") = 0 umount2("./56/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./56/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./56/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./56") = 0 mkdir("./57", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5663 attached [pid 5663] set_robust_list(0x555568d8c6e0, 24 [pid 5597] <... clone resumed>, child_tidptr=0x555568d8c6d0) = 5663 [pid 5663] <... set_robust_list resumed>) = 0 [pid 5597] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5663] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5663] chdir("./57") = 0 [pid 5663] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5663] setpgid(0, 0) = 0 [pid 5663] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5663] write(3, "1000", 4) = 4 [pid 5663] close(3) = 0 [pid 5663] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5663] write(1, "executing program\n", 18) = 18 executing program [pid 5663] memfd_create("syzkaller", 0) = 3 [pid 5663] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5663] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5663] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5663] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5663] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5663] close(3) = 0 [pid 5663] close(4) = 0 [pid 5663] mkdir("./file1", 0777) = 0 [pid 5663] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5663] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5663] chdir("./file1") = 0 [pid 5663] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5663] ioctl(4, LOOP_CLR_FD) = 0 [pid 5663] close(4) = 0 [ 106.971351][ T5663] loop0: detected capacity change from 0 to 32768 [pid 5663] exit_group(0) = ? [pid 5663] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5663, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=17 /* 0.17 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./57", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./57", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 umount2("./57/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./57/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./57/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./57/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./57/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./57/file1") = 0 umount2("./57/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./57/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./57/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./57") = 0 mkdir("./58", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5664 attached , child_tidptr=0x555568d8c6d0) = 5664 [pid 5597] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5664] set_robust_list(0x555568d8c6e0, 24) = 0 [pid 5664] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5664] chdir("./58") = 0 [pid 5664] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5664] setpgid(0, 0) = 0 [pid 5664] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5664] write(3, "1000", 4) = 4 [pid 5664] close(3) = 0 [pid 5664] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5664] write(1, "executing program\n", 18) = 18 executing program [pid 5664] memfd_create("syzkaller", 0) = 3 [pid 5664] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5664] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5664] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5664] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5664] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5664] close(3) = 0 [pid 5664] close(4) = 0 [pid 5664] mkdir("./file1", 0777) = 0 [pid 5664] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5664] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5664] chdir("./file1") = 0 [pid 5664] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5664] ioctl(4, LOOP_CLR_FD) = 0 [pid 5664] close(4) = 0 [pid 5664] exit_group(0) = ? [pid 5664] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5664, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=15 /* 0.15 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [ 107.362287][ T5664] loop0: detected capacity change from 0 to 32768 umount2("./58", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./58", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 umount2("./58/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./58/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./58/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./58/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./58/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./58/file1") = 0 umount2("./58/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./58/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./58/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./58") = 0 mkdir("./59", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5665 attached [pid 5665] set_robust_list(0x555568d8c6e0, 24 [pid 5597] <... clone resumed>, child_tidptr=0x555568d8c6d0) = 5665 [pid 5665] <... set_robust_list resumed>) = 0 [pid 5597] rt_sigprocmask(SIG_SETMASK, [] [pid 5665] rt_sigprocmask(SIG_SETMASK, [] [pid 5597] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5665] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5665] chdir("./59") = 0 [pid 5665] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5665] setpgid(0, 0) = 0 [pid 5665] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5665] write(3, "1000", 4) = 4 [pid 5665] close(3) = 0 [pid 5665] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5665] write(1, "executing program\n", 18) = 18 executing program [pid 5665] memfd_create("syzkaller", 0) = 3 [pid 5665] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5665] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5665] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5665] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5665] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5665] close(3) = 0 [pid 5665] close(4) = 0 [pid 5665] mkdir("./file1", 0777) = 0 [pid 5665] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5665] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5665] chdir("./file1") = 0 [pid 5665] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5665] ioctl(4, LOOP_CLR_FD) = 0 [pid 5665] close(4) = 0 [pid 5665] exit_group(0) = ? [pid 5665] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5665, si_uid=0, si_status=0, si_utime=0, si_stime=15 /* 0.15 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./59", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./59", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 [ 107.756999][ T5665] loop0: detected capacity change from 0 to 32768 umount2("./59/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./59/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./59/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./59/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./59/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./59/file1") = 0 umount2("./59/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./59/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./59/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./59") = 0 mkdir("./60", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555568d8c6d0) = 5666 ci2-upstream-fs/strace-static-x86_64: Process 5666 attached [pid 5597] rt_sigprocmask(SIG_SETMASK, [] [pid 5666] set_robust_list(0x555568d8c6e0, 24 [pid 5597] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5666] <... set_robust_list resumed>) = 0 [pid 5666] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5666] chdir("./60") = 0 [pid 5666] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5666] setpgid(0, 0) = 0 [pid 5666] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5666] write(3, "1000", 4) = 4 [pid 5666] close(3) = 0 [pid 5666] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5666] write(1, "executing program\n", 18) = 18 executing program [pid 5666] memfd_create("syzkaller", 0) = 3 [pid 5666] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5666] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5666] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5666] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5666] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5666] close(3) = 0 [pid 5666] close(4) = 0 [pid 5666] mkdir("./file1", 0777) = 0 [pid 5666] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5666] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5666] chdir("./file1") = 0 [pid 5666] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5666] ioctl(4, LOOP_CLR_FD) = 0 [pid 5666] close(4) = 0 [pid 5666] exit_group(0) = ? [pid 5666] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5666, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=13 /* 0.13 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./60", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./60", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 [ 108.132714][ T5666] loop0: detected capacity change from 0 to 32768 umount2("./60/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./60/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./60/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./60/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./60/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./60/file1") = 0 umount2("./60/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./60/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./60/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./60") = 0 mkdir("./61", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5667 attached , child_tidptr=0x555568d8c6d0) = 5667 [pid 5597] rt_sigprocmask(SIG_SETMASK, [] [pid 5667] set_robust_list(0x555568d8c6e0, 24 [pid 5597] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5667] <... set_robust_list resumed>) = 0 [pid 5667] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5667] chdir("./61") = 0 [pid 5667] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5667] setpgid(0, 0) = 0 [pid 5667] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5667] write(3, "1000", 4) = 4 [pid 5667] close(3) = 0 [pid 5667] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5667] write(1, "executing program\n", 18) = 18 executing program [pid 5667] memfd_create("syzkaller", 0) = 3 [pid 5667] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5667] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5667] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5667] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5667] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5667] close(3) = 0 [pid 5667] close(4) = 0 [pid 5667] mkdir("./file1", 0777) = 0 [pid 5667] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5667] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5667] chdir("./file1") = 0 [pid 5667] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5667] ioctl(4, LOOP_CLR_FD) = 0 [pid 5667] close(4) = 0 [pid 5667] exit_group(0) = ? [pid 5667] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5667, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=12 /* 0.12 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./61", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./61", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 umount2("./61/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./61/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./61/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./61/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./61/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./61/file1") = 0 umount2("./61/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./61/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./61/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./61") = 0 mkdir("./62", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5668 attached , child_tidptr=0x555568d8c6d0) = 5668 [pid 5597] rt_sigprocmask(SIG_SETMASK, [] [pid 5668] set_robust_list(0x555568d8c6e0, 24 [pid 5597] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5668] <... set_robust_list resumed>) = 0 [pid 5668] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5668] chdir("./62") = 0 [pid 5668] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5668] setpgid(0, 0) = 0 [pid 5668] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5668] write(3, "1000", 4) = 4 [pid 5668] close(3) = 0 [pid 5668] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5668] write(1, "executing program\n", 18) = 18 [pid 5668] memfd_create("syzkaller", 0) = 3 [pid 5668] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 executing program [pid 5668] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5668] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5668] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5668] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5668] close(3) = 0 [pid 5668] close(4) = 0 [pid 5668] mkdir("./file1", 0777) = 0 [pid 5668] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5668] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5668] chdir("./file1") = 0 [pid 5668] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5668] ioctl(4, LOOP_CLR_FD) = 0 [pid 5668] close(4) = 0 [pid 5668] exit_group(0) = ? [pid 5668] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5668, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=14 /* 0.14 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./62", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./62", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 umount2("./62/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./62/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./62/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./62/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./62/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./62/file1") = 0 umount2("./62/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./62/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./62/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./62") = 0 mkdir("./63", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5669 attached , child_tidptr=0x555568d8c6d0) = 5669 [pid 5669] set_robust_list(0x555568d8c6e0, 24) = 0 [pid 5669] rt_sigprocmask(SIG_SETMASK, [] [pid 5597] rt_sigprocmask(SIG_SETMASK, [] [pid 5669] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5597] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5669] chdir("./63") = 0 [pid 5669] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5669] setpgid(0, 0) = 0 [pid 5669] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5669] write(3, "1000", 4) = 4 [pid 5669] close(3) = 0 [pid 5669] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5669] write(1, "executing program\n", 18) = 18 executing program [pid 5669] memfd_create("syzkaller", 0) = 3 [pid 5669] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5669] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5669] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5669] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5669] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5669] close(3) = 0 [pid 5669] close(4) = 0 [pid 5669] mkdir("./file1", 0777) = 0 [pid 5669] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5669] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5669] chdir("./file1") = 0 [pid 5669] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5669] ioctl(4, LOOP_CLR_FD) = 0 [pid 5669] close(4) = 0 [pid 5669] exit_group(0) = ? [pid 5669] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5669, si_uid=0, si_status=0, si_utime=0, si_stime=14 /* 0.14 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./63", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./63", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 umount2("./63/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./63/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./63/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./63/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./63/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./63/file1") = 0 umount2("./63/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./63/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./63/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./63") = 0 mkdir("./64", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5670 attached [pid 5670] set_robust_list(0x555568d8c6e0, 24 [pid 5597] <... clone resumed>, child_tidptr=0x555568d8c6d0) = 5670 [pid 5597] rt_sigprocmask(SIG_SETMASK, [] [pid 5670] <... set_robust_list resumed>) = 0 [pid 5597] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5670] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5670] chdir("./64") = 0 [pid 5670] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5670] setpgid(0, 0) = 0 [pid 5670] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5670] write(3, "1000", 4) = 4 [pid 5670] close(3) = 0 [pid 5670] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5670] write(1, "executing program\n", 18) = 18 executing program [pid 5670] memfd_create("syzkaller", 0) = 3 [pid 5670] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5670] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5670] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5670] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5670] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5670] close(3) = 0 [pid 5670] close(4) = 0 [pid 5670] mkdir("./file1", 0777) = 0 [pid 5670] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5670] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5670] chdir("./file1") = 0 [pid 5670] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5670] ioctl(4, LOOP_CLR_FD) = 0 [pid 5670] close(4) = 0 [pid 5670] exit_group(0) = ? [pid 5670] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5670, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=13 /* 0.13 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./64", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./64", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 [ 109.647597][ T5670] set_capacity_and_notify: 3 callbacks suppressed [ 109.647651][ T5670] loop0: detected capacity change from 0 to 32768 umount2("./64/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./64/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./64/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./64/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./64/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./64/file1") = 0 umount2("./64/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./64/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./64/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./64") = 0 mkdir("./65", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5671 attached [pid 5671] set_robust_list(0x555568d8c6e0, 24 [pid 5597] <... clone resumed>, child_tidptr=0x555568d8c6d0) = 5671 [pid 5671] <... set_robust_list resumed>) = 0 [pid 5671] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5597] rt_sigprocmask(SIG_SETMASK, [] [pid 5671] chdir("./65" [pid 5597] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5671] <... chdir resumed>) = 0 [pid 5671] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5671] setpgid(0, 0) = 0 [pid 5671] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5671] write(3, "1000", 4) = 4 [pid 5671] close(3) = 0 [pid 5671] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5671] write(1, "executing program\n", 18) = 18 [pid 5671] memfd_create("syzkaller", 0) = 3 [pid 5671] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5671] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5671] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5671] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5671] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5671] close(3) = 0 [pid 5671] close(4) = 0 [pid 5671] mkdir("./file1", 0777) = 0 [pid 5671] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5671] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5671] chdir("./file1") = 0 [pid 5671] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5671] ioctl(4, LOOP_CLR_FD) = 0 [pid 5671] close(4) = 0 [pid 5671] exit_group(0) = ? [pid 5671] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5671, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=16 /* 0.16 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./65", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./65", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 [ 110.047227][ T5671] loop0: detected capacity change from 0 to 32768 umount2("./65/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./65/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./65/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./65/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./65/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./65/file1") = 0 umount2("./65/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./65/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./65/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./65") = 0 mkdir("./66", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5672 attached , child_tidptr=0x555568d8c6d0) = 5672 [pid 5672] set_robust_list(0x555568d8c6e0, 24 [pid 5597] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5672] <... set_robust_list resumed>) = 0 [pid 5672] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5672] chdir("./66") = 0 [pid 5672] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5672] setpgid(0, 0) = 0 [pid 5672] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5672] write(3, "1000", 4) = 4 [pid 5672] close(3) = 0 [pid 5672] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5672] write(1, "executing program\n", 18) = 18 [pid 5672] memfd_create("syzkaller", 0) = 3 [pid 5672] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5672] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5672] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5672] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5672] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5672] close(3) = 0 [pid 5672] close(4) = 0 [pid 5672] mkdir("./file1", 0777) = 0 [pid 5672] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [ 110.421420][ T5672] loop0: detected capacity change from 0 to 32768 [pid 5672] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5672] chdir("./file1") = 0 [pid 5672] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5672] ioctl(4, LOOP_CLR_FD) = 0 [pid 5672] close(4) = 0 [pid 5672] exit_group(0) = ? [pid 5672] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5672, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=13 /* 0.13 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./66", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./66", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 umount2("./66/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./66/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./66/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./66/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./66/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./66/file1") = 0 umount2("./66/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./66/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./66/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./66") = 0 mkdir("./67", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5673 attached , child_tidptr=0x555568d8c6d0) = 5673 [pid 5597] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5673] set_robust_list(0x555568d8c6e0, 24) = 0 [pid 5673] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5673] chdir("./67") = 0 [pid 5673] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5673] setpgid(0, 0) = 0 [pid 5673] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5673] write(3, "1000", 4) = 4 [pid 5673] close(3) = 0 [pid 5673] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5673] write(1, "executing program\n", 18) = 18 executing program [pid 5673] memfd_create("syzkaller", 0) = 3 [pid 5673] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5673] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5673] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5673] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5673] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5673] close(3) = 0 [pid 5673] close(4) = 0 [pid 5673] mkdir("./file1", 0777) = 0 [pid 5673] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5673] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5673] chdir("./file1") = 0 [pid 5673] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5673] ioctl(4, LOOP_CLR_FD) = 0 [pid 5673] close(4) = 0 [pid 5673] exit_group(0) = ? [pid 5673] +++ exited with 0 +++ [ 110.845516][ T5673] loop0: detected capacity change from 0 to 32768 --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5673, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=13 /* 0.13 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./67", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./67", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 umount2("./67/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./67/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./67/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./67/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./67/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./67/file1") = 0 umount2("./67/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./67/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./67/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./67") = 0 mkdir("./68", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5674 attached [pid 5674] set_robust_list(0x555568d8c6e0, 24) = 0 [pid 5597] <... clone resumed>, child_tidptr=0x555568d8c6d0) = 5674 [pid 5674] rt_sigprocmask(SIG_SETMASK, [] [pid 5597] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5674] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5674] chdir("./68") = 0 [pid 5674] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5674] setpgid(0, 0) = 0 [pid 5674] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5674] write(3, "1000", 4) = 4 [pid 5674] close(3) = 0 [pid 5674] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5674] write(1, "executing program\n", 18) = 18 [pid 5674] memfd_create("syzkaller", 0) = 3 [pid 5674] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5674] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5674] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5674] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5674] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5674] close(3) = 0 [pid 5674] close(4) = 0 [pid 5674] mkdir("./file1", 0777) = 0 [pid 5674] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5674] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5674] chdir("./file1") = 0 [pid 5674] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5674] ioctl(4, LOOP_CLR_FD) = 0 [pid 5674] close(4) = 0 [pid 5674] exit_group(0) = ? [pid 5674] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5674, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=13 /* 0.13 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./68", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./68", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 [ 111.230023][ T5674] loop0: detected capacity change from 0 to 32768 umount2("./68/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./68/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./68/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./68/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./68/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./68/file1") = 0 umount2("./68/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./68/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./68/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./68") = 0 mkdir("./69", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5675 attached , child_tidptr=0x555568d8c6d0) = 5675 [pid 5675] set_robust_list(0x555568d8c6e0, 24 [pid 5597] rt_sigprocmask(SIG_SETMASK, [] [pid 5675] <... set_robust_list resumed>) = 0 [pid 5597] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5675] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5675] chdir("./69") = 0 [pid 5675] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5675] setpgid(0, 0) = 0 [pid 5675] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5675] write(3, "1000", 4) = 4 [pid 5675] close(3) = 0 [pid 5675] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5675] write(1, "executing program\n", 18) = 18 [pid 5675] memfd_create("syzkaller", 0) = 3 [pid 5675] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5675] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5675] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5675] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5675] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5675] close(3) = 0 [pid 5675] close(4) = 0 [pid 5675] mkdir("./file1", 0777) = 0 [pid 5675] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5675] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5675] chdir("./file1") = 0 [pid 5675] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5675] ioctl(4, LOOP_CLR_FD) = 0 [pid 5675] close(4) = 0 [pid 5675] exit_group(0) = ? [pid 5675] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5675, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=13 /* 0.13 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./69", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./69", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 [ 111.598609][ T5675] loop0: detected capacity change from 0 to 32768 umount2("./69/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./69/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./69/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./69/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./69/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./69/file1") = 0 umount2("./69/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./69/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./69/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./69") = 0 mkdir("./70", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5676 attached , child_tidptr=0x555568d8c6d0) = 5676 [pid 5597] rt_sigprocmask(SIG_SETMASK, [] [pid 5676] set_robust_list(0x555568d8c6e0, 24 [pid 5597] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5676] <... set_robust_list resumed>) = 0 [pid 5676] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5676] chdir("./70") = 0 [pid 5676] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5676] setpgid(0, 0) = 0 [pid 5676] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5676] write(3, "1000", 4) = 4 [pid 5676] close(3) = 0 [pid 5676] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5676] write(1, "executing program\n", 18) = 18 [pid 5676] memfd_create("syzkaller", 0) = 3 [pid 5676] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 executing program [pid 5676] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5676] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5676] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5676] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5676] close(3) = 0 [pid 5676] close(4) = 0 [pid 5676] mkdir("./file1", 0777) = 0 [pid 5676] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5676] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5676] chdir("./file1") = 0 [pid 5676] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5676] ioctl(4, LOOP_CLR_FD) = 0 [pid 5676] close(4) = 0 [pid 5676] exit_group(0) = ? [pid 5676] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5676, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=9 /* 0.09 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./70", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./70", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 [ 111.969598][ T5676] loop0: detected capacity change from 0 to 32768 umount2("./70/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./70/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./70/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./70/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./70/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./70/file1") = 0 umount2("./70/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./70/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./70/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./70") = 0 mkdir("./71", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5677 attached , child_tidptr=0x555568d8c6d0) = 5677 [pid 5677] set_robust_list(0x555568d8c6e0, 24 [pid 5597] rt_sigprocmask(SIG_SETMASK, [] [pid 5677] <... set_robust_list resumed>) = 0 [pid 5677] rt_sigprocmask(SIG_SETMASK, [] [pid 5597] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5677] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5677] chdir("./71") = 0 [pid 5677] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5677] setpgid(0, 0) = 0 [pid 5677] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5677] write(3, "1000", 4) = 4 [pid 5677] close(3) = 0 [pid 5677] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5677] write(1, "executing program\n", 18) = 18 executing program [pid 5677] memfd_create("syzkaller", 0) = 3 [pid 5677] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5677] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5677] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5677] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5677] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5677] close(3) = 0 [pid 5677] close(4) = 0 [pid 5677] mkdir("./file1", 0777) = 0 [pid 5677] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5677] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5677] chdir("./file1") = 0 [pid 5677] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5677] ioctl(4, LOOP_CLR_FD) = 0 [pid 5677] close(4) = 0 [pid 5677] exit_group(0) = ? [pid 5677] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5677, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=20 /* 0.20 s */} --- [ 112.340748][ T5677] loop0: detected capacity change from 0 to 32768 restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./71", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./71", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 umount2("./71/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./71/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./71/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./71/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./71/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./71/file1") = 0 umount2("./71/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./71/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./71/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./71") = 0 mkdir("./72", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5678 attached , child_tidptr=0x555568d8c6d0) = 5678 [pid 5597] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5678] set_robust_list(0x555568d8c6e0, 24) = 0 [pid 5678] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5678] chdir("./72") = 0 [pid 5678] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5678] setpgid(0, 0) = 0 [pid 5678] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5678] write(3, "1000", 4) = 4 [pid 5678] close(3) = 0 [pid 5678] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5678] write(1, "executing program\n", 18) = 18 executing program [pid 5678] memfd_create("syzkaller", 0) = 3 [pid 5678] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5678] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5678] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5678] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5678] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5678] close(3) = 0 [pid 5678] close(4) = 0 [pid 5678] mkdir("./file1", 0777) = 0 [pid 5678] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5678] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5678] chdir("./file1") = 0 [pid 5678] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5678] ioctl(4, LOOP_CLR_FD) = 0 [pid 5678] close(4) = 0 [pid 5678] exit_group(0) = ? [pid 5678] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5678, si_uid=0, si_status=0, si_utime=0, si_stime=15 /* 0.15 s */} --- umount2("./72", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./72", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 [ 112.734946][ T5678] loop0: detected capacity change from 0 to 32768 umount2("./72/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./72/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./72/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./72/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./72/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./72/file1") = 0 umount2("./72/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./72/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./72/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./72") = 0 mkdir("./73", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5679 attached [pid 5679] set_robust_list(0x555568d8c6e0, 24 [pid 5597] <... clone resumed>, child_tidptr=0x555568d8c6d0) = 5679 [pid 5679] <... set_robust_list resumed>) = 0 [pid 5597] rt_sigprocmask(SIG_SETMASK, [] [pid 5679] rt_sigprocmask(SIG_SETMASK, [] [pid 5597] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5679] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5679] chdir("./73") = 0 [pid 5679] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5679] setpgid(0, 0) = 0 [pid 5679] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5679] write(3, "1000", 4) = 4 [pid 5679] close(3) = 0 [pid 5679] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5679] write(1, "executing program\n", 18) = 18 [pid 5679] memfd_create("syzkaller", 0) = 3 [pid 5679] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5679] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5679] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5679] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5679] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5679] close(3) = 0 [pid 5679] close(4) = 0 [pid 5679] mkdir("./file1", 0777) = 0 [pid 5679] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5679] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5679] chdir("./file1") = 0 [pid 5679] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5679] ioctl(4, LOOP_CLR_FD) = 0 [pid 5679] close(4) = 0 [pid 5679] exit_group(0) = ? [pid 5679] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5679, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=13 /* 0.13 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./73", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./73", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 [ 113.101301][ T5679] loop0: detected capacity change from 0 to 32768 umount2("./73/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./73/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./73/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./73/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./73/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./73/file1") = 0 umount2("./73/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./73/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./73/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./73") = 0 mkdir("./74", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5680 attached [pid 5680] set_robust_list(0x555568d8c6e0, 24 [pid 5597] <... clone resumed>, child_tidptr=0x555568d8c6d0) = 5680 [pid 5680] <... set_robust_list resumed>) = 0 [pid 5597] rt_sigprocmask(SIG_SETMASK, [] [pid 5680] rt_sigprocmask(SIG_SETMASK, [] [pid 5597] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5680] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5680] chdir("./74") = 0 [pid 5680] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5680] setpgid(0, 0) = 0 [pid 5680] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5680] write(3, "1000", 4) = 4 [pid 5680] close(3) = 0 [pid 5680] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5680] write(1, "executing program\n", 18) = 18 executing program [pid 5680] memfd_create("syzkaller", 0) = 3 [pid 5680] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5680] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5680] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5680] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5680] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5680] close(3) = 0 [pid 5680] close(4) = 0 [pid 5680] mkdir("./file1", 0777) = 0 [pid 5680] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5680] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5680] chdir("./file1") = 0 [pid 5680] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5680] ioctl(4, LOOP_CLR_FD) = 0 [pid 5680] close(4) = 0 [pid 5680] exit_group(0) = ? [pid 5680] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5680, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=14 /* 0.14 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./74", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./74", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 umount2("./74/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./74/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./74/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./74/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./74/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./74/file1") = 0 umount2("./74/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./74/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./74/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./74") = 0 mkdir("./75", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5681 attached , child_tidptr=0x555568d8c6d0) = 5681 [pid 5597] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5681] set_robust_list(0x555568d8c6e0, 24) = 0 [pid 5681] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5681] chdir("./75") = 0 [pid 5681] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5681] setpgid(0, 0) = 0 [pid 5681] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5681] write(3, "1000", 4) = 4 [pid 5681] close(3) = 0 [pid 5681] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5681] write(1, "executing program\n", 18) = 18 executing program [pid 5681] memfd_create("syzkaller", 0) = 3 [pid 5681] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5681] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5681] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5681] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5681] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5681] close(3) = 0 [pid 5681] close(4) = 0 [pid 5681] mkdir("./file1", 0777) = 0 [pid 5681] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5681] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5681] chdir("./file1") = 0 [pid 5681] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5681] ioctl(4, LOOP_CLR_FD) = 0 [pid 5681] close(4) = 0 [pid 5681] exit_group(0) = ? [pid 5681] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5681, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=12 /* 0.12 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./75", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./75", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 umount2("./75/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./75/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./75/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./75/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./75/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./75/file1") = 0 umount2("./75/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./75/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./75/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./75") = 0 mkdir("./76", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5682 attached , child_tidptr=0x555568d8c6d0) = 5682 [pid 5597] rt_sigprocmask(SIG_SETMASK, [] [pid 5682] set_robust_list(0x555568d8c6e0, 24 [pid 5597] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5682] <... set_robust_list resumed>) = 0 [pid 5682] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5682] chdir("./76") = 0 [pid 5682] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5682] setpgid(0, 0) = 0 [pid 5682] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5682] write(3, "1000", 4) = 4 [pid 5682] close(3) = 0 [pid 5682] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5682] write(1, "executing program\n", 18) = 18 executing program [pid 5682] memfd_create("syzkaller", 0) = 3 [pid 5682] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5682] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5682] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5682] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5682] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5682] close(3) = 0 [pid 5682] close(4) = 0 [pid 5682] mkdir("./file1", 0777) = 0 [pid 5682] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5682] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5682] chdir("./file1") = 0 [pid 5682] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5682] ioctl(4, LOOP_CLR_FD) = 0 [pid 5682] close(4) = 0 [pid 5682] exit_group(0) = ? [pid 5682] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5682, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=14 /* 0.14 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./76", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./76", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 umount2("./76/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./76/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./76/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./76/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./76/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./76/file1") = 0 umount2("./76/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./76/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./76/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./76") = 0 mkdir("./77", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555568d8c6d0) = 5683 ci2-upstream-fs/strace-static-x86_64: Process 5683 attached [pid 5597] rt_sigprocmask(SIG_SETMASK, [] [pid 5683] set_robust_list(0x555568d8c6e0, 24 [pid 5597] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5683] <... set_robust_list resumed>) = 0 [pid 5683] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5683] chdir("./77") = 0 [pid 5683] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5683] setpgid(0, 0) = 0 [pid 5683] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5683] write(3, "1000", 4) = 4 [pid 5683] close(3) = 0 [pid 5683] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5683] write(1, "executing program\n", 18) = 18 executing program [pid 5683] memfd_create("syzkaller", 0) = 3 [pid 5683] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5683] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5683] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5683] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5683] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5683] close(3) = 0 [pid 5683] close(4) = 0 [pid 5683] mkdir("./file1", 0777) = 0 [pid 5683] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5683] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5683] chdir("./file1") = 0 [pid 5683] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5683] ioctl(4, LOOP_CLR_FD) = 0 [pid 5683] close(4) = 0 [pid 5683] exit_group(0) = ? [pid 5683] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5683, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=12 /* 0.12 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./77", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./77", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 umount2("./77/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./77/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./77/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./77/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./77/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./77/file1") = 0 umount2("./77/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./77/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./77/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./77") = 0 mkdir("./78", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5684 attached [pid 5684] set_robust_list(0x555568d8c6e0, 24 [pid 5597] <... clone resumed>, child_tidptr=0x555568d8c6d0) = 5684 [pid 5684] <... set_robust_list resumed>) = 0 [pid 5597] rt_sigprocmask(SIG_SETMASK, [] [pid 5684] rt_sigprocmask(SIG_SETMASK, [] [pid 5597] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5684] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5684] chdir("./78") = 0 [pid 5684] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5684] setpgid(0, 0) = 0 [pid 5684] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5684] write(3, "1000", 4) = 4 [pid 5684] close(3) = 0 [pid 5684] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5684] write(1, "executing program\n", 18) = 18 executing program [pid 5684] memfd_create("syzkaller", 0) = 3 [pid 5684] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5684] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5684] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5684] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5684] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5684] close(3) = 0 [pid 5684] close(4) = 0 [pid 5684] mkdir("./file1", 0777) = 0 [pid 5684] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5684] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5684] chdir("./file1") = 0 [pid 5684] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5684] ioctl(4, LOOP_CLR_FD) = 0 [pid 5684] close(4) = 0 [pid 5684] exit_group(0) = ? [pid 5684] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5684, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=13 /* 0.13 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./78", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./78", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 [ 115.049550][ T5684] set_capacity_and_notify: 4 callbacks suppressed [ 115.049569][ T5684] loop0: detected capacity change from 0 to 32768 umount2("./78/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./78/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./78/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./78/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./78/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./78/file1") = 0 umount2("./78/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./78/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./78/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./78") = 0 mkdir("./79", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5685 attached , child_tidptr=0x555568d8c6d0) = 5685 [pid 5597] rt_sigprocmask(SIG_SETMASK, [] [pid 5685] set_robust_list(0x555568d8c6e0, 24 [pid 5597] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5685] <... set_robust_list resumed>) = 0 [pid 5685] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5685] chdir("./79") = 0 [pid 5685] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5685] setpgid(0, 0) = 0 [pid 5685] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5685] write(3, "1000", 4) = 4 [pid 5685] close(3) = 0 [pid 5685] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5685] write(1, "executing program\n", 18) = 18 [pid 5685] memfd_create("syzkaller", 0) = 3 executing program [pid 5685] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5685] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5685] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5685] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5685] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5685] close(3) = 0 [pid 5685] close(4) = 0 [pid 5685] mkdir("./file1", 0777) = 0 [pid 5685] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5685] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5685] chdir("./file1") = 0 [pid 5685] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5685] ioctl(4, LOOP_CLR_FD) = 0 [pid 5685] close(4) = 0 [pid 5685] exit_group(0) = ? [pid 5685] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5685, si_uid=0, si_status=0, si_utime=0, si_stime=17 /* 0.17 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./79", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./79", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 [ 115.421253][ T5685] loop0: detected capacity change from 0 to 32768 umount2("./79/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./79/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./79/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./79/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./79/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./79/file1") = 0 umount2("./79/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./79/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./79/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./79") = 0 mkdir("./80", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5686 attached [pid 5686] set_robust_list(0x555568d8c6e0, 24 [pid 5597] <... clone resumed>, child_tidptr=0x555568d8c6d0) = 5686 [pid 5686] <... set_robust_list resumed>) = 0 [pid 5597] rt_sigprocmask(SIG_SETMASK, [] [pid 5686] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5597] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5686] chdir("./80") = 0 [pid 5686] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5686] setpgid(0, 0) = 0 [pid 5686] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5686] write(3, "1000", 4) = 4 [pid 5686] close(3) = 0 [pid 5686] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5686] write(1, "executing program\n", 18) = 18 executing program [pid 5686] memfd_create("syzkaller", 0) = 3 [pid 5686] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5686] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5686] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5686] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5686] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5686] close(3) = 0 [pid 5686] close(4) = 0 [pid 5686] mkdir("./file1", 0777) = 0 [pid 5686] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5686] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5686] chdir("./file1") = 0 [pid 5686] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5686] ioctl(4, LOOP_CLR_FD) = 0 [pid 5686] close(4) = 0 [pid 5686] exit_group(0) = ? [pid 5686] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5686, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=13 /* 0.13 s */} --- [ 115.812073][ T5686] loop0: detected capacity change from 0 to 32768 restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./80", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./80", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 umount2("./80/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./80/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./80/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./80/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./80/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./80/file1") = 0 umount2("./80/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./80/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./80/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./80") = 0 mkdir("./81", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5687 attached [pid 5687] set_robust_list(0x555568d8c6e0, 24 [pid 5597] <... clone resumed>, child_tidptr=0x555568d8c6d0) = 5687 [pid 5687] <... set_robust_list resumed>) = 0 [pid 5597] rt_sigprocmask(SIG_SETMASK, [] [pid 5687] rt_sigprocmask(SIG_SETMASK, [] [pid 5597] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5687] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5687] chdir("./81") = 0 [pid 5687] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5687] setpgid(0, 0) = 0 [pid 5687] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5687] write(3, "1000", 4) = 4 [pid 5687] close(3) = 0 [pid 5687] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5687] write(1, "executing program\n", 18) = 18 executing program [pid 5687] memfd_create("syzkaller", 0) = 3 [pid 5687] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5687] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5687] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5687] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5687] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5687] close(3) = 0 [pid 5687] close(4) = 0 [pid 5687] mkdir("./file1", 0777) = 0 [pid 5687] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5687] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5687] chdir("./file1") = 0 [pid 5687] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5687] ioctl(4, LOOP_CLR_FD) = 0 [pid 5687] close(4) = 0 [pid 5687] exit_group(0) = ? [pid 5687] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5687, si_uid=0, si_status=0, si_utime=0, si_stime=13 /* 0.13 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./81", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./81", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 [ 116.212933][ T5687] loop0: detected capacity change from 0 to 32768 umount2("./81/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./81/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./81/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./81/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./81/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./81/file1") = 0 umount2("./81/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./81/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./81/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./81") = 0 mkdir("./82", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5688 attached , child_tidptr=0x555568d8c6d0) = 5688 [pid 5597] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5688] set_robust_list(0x555568d8c6e0, 24) = 0 [pid 5688] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5688] chdir("./82") = 0 [pid 5688] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5688] setpgid(0, 0) = 0 [pid 5688] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5688] write(3, "1000", 4) = 4 [pid 5688] close(3) = 0 [pid 5688] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5688] write(1, "executing program\n", 18) = 18 executing program [pid 5688] memfd_create("syzkaller", 0) = 3 [pid 5688] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5688] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5688] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5688] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5688] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5688] close(3) = 0 [pid 5688] close(4) = 0 [pid 5688] mkdir("./file1", 0777) = 0 [pid 5688] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5688] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5688] chdir("./file1") = 0 [pid 5688] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5688] ioctl(4, LOOP_CLR_FD) = 0 [pid 5688] close(4) = 0 [pid 5688] exit_group(0) = ? [pid 5688] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5688, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=14 /* 0.14 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./82", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./82", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 [ 116.560433][ T5688] loop0: detected capacity change from 0 to 32768 umount2("./82/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./82/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./82/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./82/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./82/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./82/file1") = 0 umount2("./82/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./82/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./82/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./82") = 0 mkdir("./83", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5689 attached , child_tidptr=0x555568d8c6d0) = 5689 [pid 5689] set_robust_list(0x555568d8c6e0, 24) = 0 [pid 5597] rt_sigprocmask(SIG_SETMASK, [] [pid 5689] rt_sigprocmask(SIG_SETMASK, [] [pid 5597] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5689] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5689] chdir("./83") = 0 [pid 5689] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5689] setpgid(0, 0) = 0 [pid 5689] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5689] write(3, "1000", 4) = 4 [pid 5689] close(3) = 0 [pid 5689] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5689] write(1, "executing program\n", 18) = 18 [pid 5689] memfd_create("syzkaller", 0) = 3 [pid 5689] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5689] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5689] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5689] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5689] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5689] close(3) = 0 [pid 5689] close(4) = 0 [pid 5689] mkdir("./file1", 0777) = 0 [pid 5689] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5689] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5689] chdir("./file1") = 0 [pid 5689] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5689] ioctl(4, LOOP_CLR_FD) = 0 [pid 5689] close(4) = 0 [pid 5689] exit_group(0) = ? [pid 5689] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5689, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=18 /* 0.18 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./83", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./83", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 [ 116.926021][ T5689] loop0: detected capacity change from 0 to 32768 umount2("./83/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./83/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./83/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./83/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./83/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./83/file1") = 0 umount2("./83/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./83/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./83/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./83") = 0 mkdir("./84", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5690 attached , child_tidptr=0x555568d8c6d0) = 5690 [pid 5690] set_robust_list(0x555568d8c6e0, 24 [pid 5597] rt_sigprocmask(SIG_SETMASK, [] [pid 5690] <... set_robust_list resumed>) = 0 [pid 5690] rt_sigprocmask(SIG_SETMASK, [] [pid 5597] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5690] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5690] chdir("./84") = 0 [pid 5690] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5690] setpgid(0, 0) = 0 [pid 5690] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5690] write(3, "1000", 4) = 4 [pid 5690] close(3) = 0 [pid 5690] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5690] write(1, "executing program\n", 18) = 18 executing program [pid 5690] memfd_create("syzkaller", 0) = 3 [pid 5690] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5690] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5690] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5690] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5690] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5690] close(3) = 0 [pid 5690] close(4) = 0 [pid 5690] mkdir("./file1", 0777) = 0 [pid 5690] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5690] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5690] chdir("./file1") = 0 [pid 5690] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5690] ioctl(4, LOOP_CLR_FD) = 0 [pid 5690] close(4) = 0 [pid 5690] exit_group(0) = ? [pid 5690] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5690, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=18 /* 0.18 s */} --- [ 117.290457][ T5690] loop0: detected capacity change from 0 to 32768 restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./84", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./84", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 umount2("./84/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./84/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./84/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./84/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./84/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./84/file1") = 0 umount2("./84/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./84/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./84/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./84") = 0 mkdir("./85", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5691 attached , child_tidptr=0x555568d8c6d0) = 5691 [pid 5691] set_robust_list(0x555568d8c6e0, 24 [pid 5597] rt_sigprocmask(SIG_SETMASK, [] [pid 5691] <... set_robust_list resumed>) = 0 [pid 5691] rt_sigprocmask(SIG_SETMASK, [] [pid 5597] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5691] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5691] chdir("./85") = 0 [pid 5691] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5691] setpgid(0, 0) = 0 [pid 5691] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5691] write(3, "1000", 4) = 4 [pid 5691] close(3) = 0 [pid 5691] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5691] write(1, "executing program\n", 18) = 18 [pid 5691] memfd_create("syzkaller", 0) = 3 [pid 5691] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5691] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5691] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5691] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5691] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5691] close(3) = 0 [pid 5691] close(4) = 0 [pid 5691] mkdir("./file1", 0777) = 0 [pid 5691] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5691] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5691] chdir("./file1") = 0 [pid 5691] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5691] ioctl(4, LOOP_CLR_FD) = 0 [pid 5691] close(4) = 0 [pid 5691] exit_group(0) = ? [pid 5691] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5691, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=12 /* 0.12 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./85", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./85", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 [ 117.664074][ T5691] loop0: detected capacity change from 0 to 32768 umount2("./85/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./85/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./85/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./85/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./85/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./85/file1") = 0 umount2("./85/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./85/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./85/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./85") = 0 mkdir("./86", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5692 attached , child_tidptr=0x555568d8c6d0) = 5692 [pid 5597] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5692] set_robust_list(0x555568d8c6e0, 24) = 0 [pid 5692] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5692] chdir("./86") = 0 [pid 5692] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5692] setpgid(0, 0) = 0 [pid 5692] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5692] write(3, "1000", 4) = 4 [pid 5692] close(3) = 0 [pid 5692] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5692] write(1, "executing program\n", 18) = 18 executing program [pid 5692] memfd_create("syzkaller", 0) = 3 [pid 5692] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5692] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5692] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5692] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5692] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5692] close(3) = 0 [pid 5692] close(4) = 0 [pid 5692] mkdir("./file1", 0777) = 0 [pid 5692] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5692] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5692] chdir("./file1") = 0 [pid 5692] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5692] ioctl(4, LOOP_CLR_FD) = 0 [pid 5692] close(4) = 0 [pid 5692] exit_group(0) = ? [pid 5692] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5692, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=13 /* 0.13 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./86", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./86", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 [ 118.040649][ T5692] loop0: detected capacity change from 0 to 32768 umount2("./86/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./86/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./86/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./86/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./86/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./86/file1") = 0 umount2("./86/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./86/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./86/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./86") = 0 mkdir("./87", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5693 attached , child_tidptr=0x555568d8c6d0) = 5693 [pid 5597] rt_sigprocmask(SIG_SETMASK, [] [pid 5693] set_robust_list(0x555568d8c6e0, 24 [pid 5597] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5693] <... set_robust_list resumed>) = 0 [pid 5693] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5693] chdir("./87") = 0 [pid 5693] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5693] setpgid(0, 0) = 0 [pid 5693] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5693] write(3, "1000", 4) = 4 [pid 5693] close(3) = 0 [pid 5693] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5693] write(1, "executing program\n", 18) = 18 [pid 5693] memfd_create("syzkaller", 0) = 3 [pid 5693] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5693] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5693] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5693] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5693] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5693] close(3) = 0 [pid 5693] close(4) = 0 [pid 5693] mkdir("./file1", 0777) = 0 [pid 5693] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5693] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5693] chdir("./file1") = 0 [pid 5693] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5693] ioctl(4, LOOP_CLR_FD) = 0 [pid 5693] close(4) = 0 [ 118.420196][ T5693] loop0: detected capacity change from 0 to 32768 [pid 5693] exit_group(0) = ? [pid 5693] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5693, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=13 /* 0.13 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./87", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./87", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 umount2("./87/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./87/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./87/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./87/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./87/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./87/file1") = 0 umount2("./87/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./87/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./87/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./87") = 0 mkdir("./88", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5694 attached , child_tidptr=0x555568d8c6d0) = 5694 [pid 5597] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5694] set_robust_list(0x555568d8c6e0, 24) = 0 [pid 5694] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5694] chdir("./88") = 0 [pid 5694] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5694] setpgid(0, 0) = 0 [pid 5694] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5694] write(3, "1000", 4) = 4 [pid 5694] close(3) = 0 [pid 5694] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5694] write(1, "executing program\n", 18) = 18 executing program [pid 5694] memfd_create("syzkaller", 0) = 3 [pid 5694] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5694] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5694] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5694] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5694] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5694] close(3) = 0 [pid 5694] close(4) = 0 [pid 5694] mkdir("./file1", 0777) = 0 [pid 5694] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5694] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5694] chdir("./file1") = 0 [pid 5694] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5694] ioctl(4, LOOP_CLR_FD) = 0 [pid 5694] close(4) = 0 [pid 5694] exit_group(0) = ? [pid 5694] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5694, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=13 /* 0.13 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./88", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./88", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 umount2("./88/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./88/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./88/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./88/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./88/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./88/file1") = 0 umount2("./88/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./88/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./88/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./88") = 0 mkdir("./89", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5695 attached [pid 5695] set_robust_list(0x555568d8c6e0, 24 [pid 5597] <... clone resumed>, child_tidptr=0x555568d8c6d0) = 5695 [pid 5695] <... set_robust_list resumed>) = 0 [pid 5597] rt_sigprocmask(SIG_SETMASK, [] [pid 5695] rt_sigprocmask(SIG_SETMASK, [] [pid 5597] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5695] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5695] chdir("./89") = 0 [pid 5695] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5695] setpgid(0, 0) = 0 [pid 5695] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5695] write(3, "1000", 4) = 4 [pid 5695] close(3) = 0 [pid 5695] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5695] write(1, "executing program\n", 18) = 18 [pid 5695] memfd_create("syzkaller", 0) = 3 [pid 5695] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5695] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5695] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5695] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5695] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5695] close(3) = 0 [pid 5695] close(4) = 0 [pid 5695] mkdir("./file1", 0777) = 0 [pid 5695] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5695] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5695] chdir("./file1") = 0 [pid 5695] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5695] ioctl(4, LOOP_CLR_FD) = 0 [pid 5695] close(4) = 0 [pid 5695] exit_group(0) = ? [pid 5695] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5695, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=19 /* 0.19 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./89", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./89", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 umount2("./89/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./89/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./89/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./89/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./89/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./89/file1") = 0 umount2("./89/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./89/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./89/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./89") = 0 mkdir("./90", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5697 attached , child_tidptr=0x555568d8c6d0) = 5697 [pid 5597] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5697] set_robust_list(0x555568d8c6e0, 24) = 0 [pid 5697] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5697] chdir("./90") = 0 [pid 5697] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5697] setpgid(0, 0) = 0 [pid 5697] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5697] write(3, "1000", 4) = 4 [pid 5697] close(3) = 0 [pid 5697] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5697] write(1, "executing program\n", 18) = 18 executing program [pid 5697] memfd_create("syzkaller", 0) = 3 [pid 5697] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5697] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5697] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5697] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5697] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5697] close(3) = 0 [pid 5697] close(4) = 0 [pid 5697] mkdir("./file1", 0777) = 0 [pid 5697] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5697] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5697] chdir("./file1") = 0 [pid 5697] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5697] ioctl(4, LOOP_CLR_FD) = 0 [pid 5697] close(4) = 0 [pid 5697] exit_group(0) = ? [pid 5697] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5697, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=16 /* 0.16 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./90", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./90", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 umount2("./90/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./90/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./90/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./90/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./90/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./90/file1") = 0 umount2("./90/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./90/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./90/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./90") = 0 mkdir("./91", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5699 attached [pid 5699] set_robust_list(0x555568d8c6e0, 24 [pid 5597] <... clone resumed>, child_tidptr=0x555568d8c6d0) = 5699 [pid 5699] <... set_robust_list resumed>) = 0 [pid 5699] rt_sigprocmask(SIG_SETMASK, [] [pid 5597] rt_sigprocmask(SIG_SETMASK, [] [pid 5699] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5597] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5699] chdir("./91") = 0 [pid 5699] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5699] setpgid(0, 0) = 0 [pid 5699] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5699] write(3, "1000", 4) = 4 [pid 5699] close(3) = 0 [pid 5699] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5699] write(1, "executing program\n", 18) = 18 executing program [pid 5699] memfd_create("syzkaller", 0) = 3 [pid 5699] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5699] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5699] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5699] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5699] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5699] close(3) = 0 [pid 5699] close(4) = 0 [pid 5699] mkdir("./file1", 0777) = 0 [pid 5699] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5699] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5699] chdir("./file1") = 0 [pid 5699] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5699] ioctl(4, LOOP_CLR_FD) = 0 [pid 5699] close(4) = 0 [pid 5699] exit_group(0) = ? [pid 5699] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5699, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=12 /* 0.12 s */} --- umount2("./91", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./91", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 umount2("./91/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./91/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./91/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./91/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./91/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./91/file1") = 0 umount2("./91/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./91/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./91/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./91") = 0 mkdir("./92", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5701 attached , child_tidptr=0x555568d8c6d0) = 5701 [pid 5597] rt_sigprocmask(SIG_SETMASK, [] [pid 5701] set_robust_list(0x555568d8c6e0, 24 [pid 5597] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5701] <... set_robust_list resumed>) = 0 [pid 5701] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5701] chdir("./92") = 0 [pid 5701] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5701] setpgid(0, 0) = 0 [pid 5701] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5701] write(3, "1000", 4) = 4 [pid 5701] close(3) = 0 [pid 5701] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5701] write(1, "executing program\n", 18) = 18 executing program [pid 5701] memfd_create("syzkaller", 0) = 3 [pid 5701] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5701] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5701] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5701] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5701] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5701] close(3) = 0 [pid 5701] close(4) = 0 [pid 5701] mkdir("./file1", 0777) = 0 [pid 5701] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5701] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5701] chdir("./file1") = 0 [pid 5701] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5701] ioctl(4, LOOP_CLR_FD) = 0 [pid 5701] close(4) = 0 [pid 5701] exit_group(0) = ? [pid 5701] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5701, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=15 /* 0.15 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./92", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./92", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [ 120.441416][ T5701] set_capacity_and_notify: 4 callbacks suppressed [ 120.441429][ T5701] loop0: detected capacity change from 0 to 32768 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 umount2("./92/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./92/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./92/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./92/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./92/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./92/file1") = 0 umount2("./92/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./92/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./92/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./92") = 0 mkdir("./93", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5703 attached , child_tidptr=0x555568d8c6d0) = 5703 [pid 5597] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5703] set_robust_list(0x555568d8c6e0, 24) = 0 [pid 5703] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5703] chdir("./93") = 0 [pid 5703] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5703] setpgid(0, 0) = 0 [pid 5703] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5703] write(3, "1000", 4) = 4 [pid 5703] close(3) = 0 [pid 5703] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5703] write(1, "executing program\n", 18) = 18 executing program [pid 5703] memfd_create("syzkaller", 0) = 3 [pid 5703] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5703] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5703] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5703] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5703] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5703] close(3) = 0 [pid 5703] close(4) = 0 [pid 5703] mkdir("./file1", 0777) = 0 [pid 5703] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5703] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5703] chdir("./file1") = 0 [pid 5703] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5703] ioctl(4, LOOP_CLR_FD) = 0 [pid 5703] close(4) = 0 [pid 5703] exit_group(0) = ? [pid 5703] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5703, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=14 /* 0.14 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [ 120.801835][ T5703] loop0: detected capacity change from 0 to 32768 umount2("./93", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./93", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 umount2("./93/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./93/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./93/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./93/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./93/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./93/file1") = 0 umount2("./93/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./93/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./93/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./93") = 0 mkdir("./94", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5705 attached , child_tidptr=0x555568d8c6d0) = 5705 [pid 5705] set_robust_list(0x555568d8c6e0, 24) = 0 [pid 5597] rt_sigprocmask(SIG_SETMASK, [] [pid 5705] rt_sigprocmask(SIG_SETMASK, [] [pid 5597] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5705] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5705] chdir("./94") = 0 [pid 5705] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5705] setpgid(0, 0) = 0 [pid 5705] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5705] write(3, "1000", 4) = 4 [pid 5705] close(3) = 0 [pid 5705] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5705] write(1, "executing program\n", 18) = 18 [pid 5705] memfd_create("syzkaller", 0) = 3 executing program [pid 5705] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5705] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5705] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5705] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5705] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5705] close(3) = 0 [pid 5705] close(4) = 0 [pid 5705] mkdir("./file1", 0777) = 0 [pid 5705] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5705] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5705] chdir("./file1") = 0 [pid 5705] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5705] ioctl(4, LOOP_CLR_FD) = 0 [pid 5705] close(4) = 0 [pid 5705] exit_group(0) = ? [pid 5705] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5705, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=12 /* 0.12 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./94", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./94", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [ 121.188834][ T5705] loop0: detected capacity change from 0 to 32768 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 umount2("./94/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./94/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./94/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./94/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./94/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./94/file1") = 0 umount2("./94/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./94/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./94/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./94") = 0 mkdir("./95", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5707 attached , child_tidptr=0x555568d8c6d0) = 5707 [pid 5597] rt_sigprocmask(SIG_SETMASK, [] [pid 5707] set_robust_list(0x555568d8c6e0, 24 [pid 5597] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5707] <... set_robust_list resumed>) = 0 [pid 5707] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5707] chdir("./95") = 0 [pid 5707] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5707] setpgid(0, 0) = 0 [pid 5707] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5707] write(3, "1000", 4) = 4 [pid 5707] close(3) = 0 [pid 5707] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5707] write(1, "executing program\n", 18) = 18 [pid 5707] memfd_create("syzkaller", 0) = 3 executing program [pid 5707] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5707] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5707] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5707] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5707] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5707] close(3) = 0 [pid 5707] close(4) = 0 [pid 5707] mkdir("./file1", 0777) = 0 [pid 5707] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5707] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5707] chdir("./file1") = 0 [pid 5707] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5707] ioctl(4, LOOP_CLR_FD) = 0 [pid 5707] close(4) = 0 [pid 5707] exit_group(0) = ? [pid 5707] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5707, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=13 /* 0.13 s */} --- [ 121.555763][ T5707] loop0: detected capacity change from 0 to 32768 restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./95", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./95", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 umount2("./95/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./95/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./95/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./95/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./95/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./95/file1") = 0 umount2("./95/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./95/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./95/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./95") = 0 mkdir("./96", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5708 attached , child_tidptr=0x555568d8c6d0) = 5708 [pid 5597] rt_sigprocmask(SIG_SETMASK, [] [pid 5708] set_robust_list(0x555568d8c6e0, 24 [pid 5597] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5708] <... set_robust_list resumed>) = 0 [pid 5708] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5708] chdir("./96") = 0 [pid 5708] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5708] setpgid(0, 0) = 0 [pid 5708] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5708] write(3, "1000", 4) = 4 [pid 5708] close(3) = 0 [pid 5708] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5708] write(1, "executing program\n", 18) = 18 executing program [pid 5708] memfd_create("syzkaller", 0) = 3 [pid 5708] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5708] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5708] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5708] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5708] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5708] close(3) = 0 [pid 5708] close(4) = 0 [pid 5708] mkdir("./file1", 0777) = 0 [pid 5708] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5708] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5708] chdir("./file1") = 0 [pid 5708] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5708] ioctl(4, LOOP_CLR_FD) = 0 [pid 5708] close(4) = 0 [pid 5708] exit_group(0) = ? [pid 5708] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5708, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=14 /* 0.14 s */} --- [ 121.949648][ T5708] loop0: detected capacity change from 0 to 32768 restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./96", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./96", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 umount2("./96/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./96/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./96/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./96/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./96/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./96/file1") = 0 umount2("./96/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./96/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./96/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./96") = 0 mkdir("./97", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5709 attached , child_tidptr=0x555568d8c6d0) = 5709 [pid 5709] set_robust_list(0x555568d8c6e0, 24) = 0 [pid 5597] rt_sigprocmask(SIG_SETMASK, [] [pid 5709] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5597] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5709] chdir("./97") = 0 [pid 5709] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5709] setpgid(0, 0) = 0 [pid 5709] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5709] write(3, "1000", 4) = 4 [pid 5709] close(3) = 0 [pid 5709] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5709] write(1, "executing program\n", 18) = 18 executing program [pid 5709] memfd_create("syzkaller", 0) = 3 [pid 5709] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5709] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5709] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5709] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5709] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5709] close(3) = 0 [pid 5709] close(4) = 0 [pid 5709] mkdir("./file1", 0777) = 0 [pid 5709] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5709] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5709] chdir("./file1") = 0 [pid 5709] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5709] ioctl(4, LOOP_CLR_FD) = 0 [pid 5709] close(4) = 0 [pid 5709] exit_group(0) = ? [pid 5709] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5709, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=12 /* 0.12 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./97", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./97", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 [ 122.381624][ T5709] loop0: detected capacity change from 0 to 32768 umount2("./97/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./97/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./97/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./97/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./97/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./97/file1") = 0 umount2("./97/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./97/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./97/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./97") = 0 mkdir("./98", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5710 attached , child_tidptr=0x555568d8c6d0) = 5710 [pid 5597] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5710] set_robust_list(0x555568d8c6e0, 24) = 0 [pid 5710] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5710] chdir("./98") = 0 [pid 5710] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5710] setpgid(0, 0) = 0 [pid 5710] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5710] write(3, "1000", 4) = 4 [pid 5710] close(3) = 0 [pid 5710] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5710] write(1, "executing program\n", 18) = 18 executing program [pid 5710] memfd_create("syzkaller", 0) = 3 [pid 5710] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5710] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5710] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5710] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5710] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5710] close(3) = 0 [pid 5710] close(4) = 0 [pid 5710] mkdir("./file1", 0777) = 0 [pid 5710] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5710] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5710] chdir("./file1") = 0 [pid 5710] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5710] ioctl(4, LOOP_CLR_FD) = 0 [pid 5710] close(4) = 0 [pid 5710] exit_group(0) = ? [pid 5710] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5710, si_uid=0, si_status=0, si_utime=0, si_stime=17 /* 0.17 s */} --- [ 122.725545][ T5710] loop0: detected capacity change from 0 to 32768 restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./98", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./98", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 umount2("./98/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./98/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./98/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./98/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./98/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./98/file1") = 0 umount2("./98/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./98/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./98/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./98") = 0 mkdir("./99", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5711 attached , child_tidptr=0x555568d8c6d0) = 5711 [pid 5711] set_robust_list(0x555568d8c6e0, 24 [pid 5597] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5711] <... set_robust_list resumed>) = 0 [pid 5711] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5711] chdir("./99") = 0 [pid 5711] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5711] setpgid(0, 0) = 0 [pid 5711] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5711] write(3, "1000", 4) = 4 [pid 5711] close(3) = 0 [pid 5711] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5711] write(1, "executing program\n", 18) = 18 executing program [pid 5711] memfd_create("syzkaller", 0) = 3 [pid 5711] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5711] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5711] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5711] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5711] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5711] close(3) = 0 [pid 5711] close(4) = 0 [pid 5711] mkdir("./file1", 0777) = 0 [pid 5711] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5711] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5711] chdir("./file1") = 0 [pid 5711] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5711] ioctl(4, LOOP_CLR_FD) = 0 [pid 5711] close(4) = 0 [pid 5711] exit_group(0) = ? [pid 5711] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5711, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=14 /* 0.14 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [ 123.138313][ T5711] loop0: detected capacity change from 0 to 32768 umount2("./99", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./99", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 umount2("./99/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./99/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./99/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./99/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./99/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555568d957d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x555568d957d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./99/file1") = 0 umount2("./99/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./99/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./99/binderfs") = 0 getdents64(3, 0x555568d8d790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./99") = 0 mkdir("./100", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5712 attached , child_tidptr=0x555568d8c6d0) = 5712 [pid 5597] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5712] set_robust_list(0x555568d8c6e0, 24) = 0 [pid 5712] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5712] chdir("./100") = 0 [pid 5712] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5712] setpgid(0, 0) = 0 [pid 5712] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5712] write(3, "1000", 4) = 4 [pid 5712] close(3) = 0 [pid 5712] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5712] write(1, "executing program\n", 18) = 18 executing program [pid 5712] memfd_create("syzkaller", 0) = 3 [pid 5712] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f0dc3000 [pid 5712] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5712] munmap(0x7f44f0dc3000, 138412032) = 0 [pid 5712] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5712] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5712] close(3) = 0 [pid 5712] close(4) = 0 [pid 5712] mkdir("./file1", 0777) = 0 [pid 5712] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_NODEV|MS_MANDLOCK, "grpquota,discard,iocharset=cp866,errors=continue,iocharset=euc-jp,usrquota,errors=continue,noquota,i"...) = 0 [pid 5712] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5712] chdir("./file1") = 0 [pid 5712] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 5712] ioctl(4, LOOP_CLR_FD) = 0 [pid 5712] close(4) = 0 [pid 5712] exit_group(0) = ? [pid 5712] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5712, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=14 /* 0.14 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./100", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./100", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555568d8d790 /* 4 entries */, 32768) = 112 [ 123.527339][ T5712] loop0: detected capacity change from 0 to 32768 umount2("./100/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 [ 123.598165][ C0] ================================================================== [ 123.598184][ C0] BUG: KASAN: slab-use-after-free in lbmIODone+0x130e/0x16b0 [ 123.598229][ C0] Read of size 4 at addr ffff888031921208 by task ksoftirqd/0/15 [ 123.598247][ C0] [ 123.598276][ C0] CPU: 0 UID: 0 PID: 15 Comm: ksoftirqd/0 Not tainted syzkaller #0 PREEMPT_{RT,(full)} [ 123.598318][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 123.598338][ C0] Call Trace: [ 123.598346][ C0] [ 123.598356][ C0] dump_stack_lvl+0xe8/0x150 [ 123.598390][ C0] print_address_description+0x55/0x1e0 [ 123.598425][ C0] ? lbmIODone+0x130e/0x16b0 [ 123.598448][ C0] print_report+0x58/0x70 [ 123.598479][ C0] kasan_report+0x117/0x150 [ 123.598506][ C0] ? lbmIODone+0x130e/0x16b0 [ 123.598534][ C0] lbmIODone+0x130e/0x16b0 [ 123.598564][ C0] ? blkg_put+0x22/0x240 [ 123.598594][ C0] ? blkg_put+0x22/0x240 [ 123.598624][ C0] ? blkg_put+0x18d/0x240 [ 123.598654][ C0] ? bio_endio+0x984/0xac0 [ 123.598677][ C0] blk_update_request+0x57b/0xe50 [ 123.598705][ C0] blk_mq_end_request+0x3e/0x70 [ 123.598726][ C0] blk_done_softirq+0x10a/0x160 [ 123.598761][ C0] handle_softirqs+0x1da/0x6d0 [ 123.598797][ C0] ? smpboot_thread_fn+0x4e/0xa70 [ 123.598836][ C0] run_ksoftirqd+0x53/0x190 [ 123.598868][ C0] smpboot_thread_fn+0x565/0xa70 [ 123.598900][ C0] ? smpboot_thread_fn+0x4e/0xa70 [ 123.598937][ C0] kthread+0x38b/0x470 [ 123.598960][ C0] ? __pfx_smpboot_thread_fn+0x10/0x10 [ 123.598993][ C0] ? __pfx_kthread+0x10/0x10 [ 123.599017][ C0] ret_from_fork+0x514/0xb70 [ 123.599042][ C0] ? __pfx_ret_from_fork+0x10/0x10 [ 123.599064][ C0] ? __switch_to+0xc89/0x1420 [ 123.599096][ C0] ? __pfx_kthread+0x10/0x10 [ 123.599119][ C0] ret_from_fork_asm+0x1a/0x30 [ 123.599148][ C0] [ 123.599156][ C0] [ 123.599161][ C0] Allocated by task 5712: [ 123.599173][ C0] kasan_save_track+0x3e/0x80 [ 123.599206][ C0] __kasan_kmalloc+0x93/0xb0 [ 123.599225][ C0] __kmalloc_cache_noprof+0x3d5/0x680 [ 123.599258][ C0] lmLogInit+0x3e5/0x1a20 [ 123.599278][ C0] lmLogOpen+0x4e3/0xf90 [ 123.599297][ C0] jfs_mount_rw+0xf3/0x670 [ 123.599315][ C0] jfs_fill_super+0x769/0xda0 [ 123.599343][ C0] get_tree_bdev_flags+0x430/0x4f0 [ 123.599373][ C0] vfs_get_tree+0x92/0x2a0 [ 123.599400][ C0] do_new_mount+0x325/0xb00 [ 123.599424][ C0] __se_sys_mount+0x31d/0x420 [ 123.599448][ C0] do_syscall_64+0x166/0x520 [ 123.599479][ C0] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 123.599501][ C0] [ 123.599506][ C0] Freed by task 5597: [ 123.599515][ C0] kasan_save_track+0x3e/0x80 [ 123.599544][ C0] kasan_save_free_info+0x40/0x50 [ 123.599567][ C0] __kasan_slab_free+0x5c/0x80 [ 123.599586][ C0] kfree+0x1c5/0x6d0 [ 123.599611][ C0] lmLogShutdown+0x456/0x850 [ 123.599634][ C0] lmLogClose+0x28c/0x530 [ 123.599654][ C0] jfs_umount+0x2da/0x3b0 [ 123.599673][ C0] jfs_put_super+0x8c/0x190 [ 123.599700][ C0] generic_shutdown_super+0x13d/0x2d0 [ 123.599725][ C0] kill_block_super+0x44/0xa0 [ 123.599753][ C0] deactivate_locked_super+0xbe/0x110 [ 123.599777][ C0] cleanup_mnt+0x204/0x2a0 [ 123.599811][ C0] task_work_run+0x1d9/0x270 [ 123.599835][ C0] ptrace_notify+0x27c/0x2b0 [ 123.599862][ C0] ptrace_report_syscall_exit+0x2d/0x50 [ 123.599883][ C0] do_syscall_64+0x4a0/0x520 [ 123.599911][ C0] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 123.599931][ C0] [ 123.599937][ C0] The buggy address belongs to the object at ffff888031921200 [ 123.599937][ C0] which belongs to the cache kmalloc-256 of size 256 [ 123.599957][ C0] The buggy address is located 8 bytes inside of [ 123.599957][ C0] freed 256-byte region [ffff888031921200, ffff888031921300) [ 123.599982][ C0] [ 123.599987][ C0] The buggy address belongs to the physical page: [ 123.600005][ C0] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x31920 [ 123.600032][ C0] head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 123.600051][ C0] flags: 0x80000000000040(head|node=0|zone=1) [ 123.600075][ C0] page_type: f5(slab) [ 123.600097][ C0] raw: 0080000000000040 ffff88813ffbeb40 dead000000000100 dead000000000122 [ 123.600117][ C0] raw: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000 [ 123.600137][ C0] head: 0080000000000040 ffff88813ffbeb40 dead000000000100 dead000000000122 [ 123.600155][ C0] head: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000 [ 123.600175][ C0] head: 0080000000000001 ffffffffffffff81 00000000ffffffff 00000000ffffffff [ 123.600195][ C0] head: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000002 [ 123.600207][ C0] page dumped because: kasan: bad access detected [ 123.600222][ C0] page_owner tracks the page as allocated [ 123.600230][ C0] page last allocated via order 1, migratetype Unmovable, gfp_mask 0xd2040(__GFP_IO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 33, tgid 33 (kdevtmpfs), ts 19448498929 [ 123.600265][ C0] post_alloc_hook+0x1f9/0x250 [ 123.600295][ C0] get_page_from_freelist+0x2591/0x2600 [ 123.600316][ C0] __alloc_frozen_pages_noprof+0x230/0x5c0 [ 123.600337][ C0] allocate_slab+0x7d/0x620 [ 123.600362][ C0] refill_objects+0x2d8/0x350 [ 123.600388][ C0] __pcs_replace_empty_main+0x339/0x690 [ 123.600413][ C0] __kmalloc_noprof+0x54b/0x790 [ 123.600442][ C0] security_inode_init_security+0x102/0x3e0 [ 123.600468][ C0] shmem_mknod+0x1ea/0x340 [ 123.600490][ C0] vfs_mknod+0x443/0x610 [ 123.600519][ C0] devtmpfs_work_loop+0x861/0xdf0 [ 123.600545][ C0] devtmpfsd+0x4d/0x50 [ 123.600570][ C0] kthread+0x38b/0x470 [ 123.600589][ C0] ret_from_fork+0x514/0xb70 [ 123.600609][ C0] ret_from_fork_asm+0x1a/0x30 [ 123.600629][ C0] page_owner free stack trace missing [ 123.600637][ C0] [ 123.600643][ C0] Memory state around the buggy address: [ 123.600655][ C0] ffff888031921100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 123.600668][ C0] ffff888031921180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 123.600683][ C0] >ffff888031921200: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 123.600693][ C0] ^ [ 123.600704][ C0] ffff888031921280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 123.600719][ C0] ffff888031921300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 123.600731][ C0] ================================================================== [ 123.601541][ C0] Kernel panic - not syncing: KASAN: panic_on_warn set ... [ 124.228952][ C0] CPU: 0 UID: 0 PID: 15 Comm: ksoftirqd/0 Not tainted syzkaller #0 PREEMPT_{RT,(full)} [ 124.238663][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 124.248708][ C0] Call Trace: [ 124.251978][ C0] [ 124.254899][ C0] vpanic+0x56d/0xa60 [ 124.258878][ C0] ? __pfx_vpanic+0x10/0x10 [ 124.263372][ C0] ? __pfx___schedule+0x10/0x10 [ 124.268219][ C0] panic+0xc5/0xd0 [ 124.271925][ C0] ? __pfx_panic+0x10/0x10 [ 124.276346][ C0] ? preempt_schedule_common+0x7f/0xd0 [ 124.281802][ C0] ? lbmIODone+0x130e/0x16b0 [ 124.286381][ C0] check_panic_on_warn+0x89/0xb0 [ 124.291310][ C0] ? lbmIODone+0x130e/0x16b0 [ 124.295900][ C0] end_report+0x73/0x170 [ 124.300146][ C0] ? lbmIODone+0x130e/0x16b0 [ 124.304731][ C0] kasan_report+0x128/0x150 [ 124.309227][ C0] ? lbmIODone+0x130e/0x16b0 [ 124.313807][ C0] lbmIODone+0x130e/0x16b0 [ 124.318214][ C0] ? blkg_put+0x22/0x240 [ 124.322450][ C0] ? blkg_put+0x22/0x240 [ 124.326688][ C0] ? blkg_put+0x18d/0x240 [ 124.331011][ C0] ? bio_endio+0x984/0xac0 [ 124.335418][ C0] blk_update_request+0x57b/0xe50 [ 124.340437][ C0] blk_mq_end_request+0x3e/0x70 [ 124.345279][ C0] blk_done_softirq+0x10a/0x160 [ 124.350132][ C0] handle_softirqs+0x1da/0x6d0 [ 124.354900][ C0] ? smpboot_thread_fn+0x4e/0xa70 [ 124.359920][ C0] run_ksoftirqd+0x53/0x190 [ 124.364424][ C0] smpboot_thread_fn+0x565/0xa70 [ 124.369361][ C0] ? smpboot_thread_fn+0x4e/0xa70 [ 124.374384][ C0] kthread+0x38b/0x470 [ 124.378442][ C0] ? __pfx_smpboot_thread_fn+0x10/0x10 [ 124.383895][ C0] ? __pfx_kthread+0x10/0x10 [ 124.388473][ C0] ret_from_fork+0x514/0xb70 [ 124.393052][ C0] ? __pfx_ret_from_fork+0x10/0x10 [ 124.398149][ C0] ? __switch_to+0xc89/0x1420 [ 124.402828][ C0] ? __pfx_kthread+0x10/0x10 [ 124.407407][ C0] ret_from_fork_asm+0x1a/0x30 [ 124.412169][ C0] [ 124.415318][ C0] Kernel Offset: disabled [ 124.419629][ C0] Rebooting in 86400 seconds..