./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor4000514760 <...> Warning: Permanently added '10.128.0.67' (ED25519) to the list of known hosts. execve("./syz-executor4000514760", ["./syz-executor4000514760"], 0x7ffe9959eb70 /* 10 vars */) = 0 brk(NULL) = 0x555582195000 brk(0x555582195d00) = 0x555582195d00 arch_prctl(ARCH_SET_FS, 0x555582195380) = 0 set_tid_address(0x555582195650) = 5847 set_robust_list(0x555582195660, 24) = 0 rseq(0x555582195ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor4000514760", 4096) = 28 getrandom("\xfe\x7d\xbf\xb8\x1e\xe5\x7f\xec", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555582195d00 brk(0x5555821b6d00) = 0x5555821b6d00 brk(0x5555821b7000) = 0x5555821b7000 mprotect(0x7f8e723fd000, 16384, 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 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5848 attached [pid 5848] set_robust_list(0x555582195660, 24 [pid 5847] <... clone resumed>, child_tidptr=0x555582195650) = 5848 [pid 5848] <... set_robust_list resumed>) = 0 [pid 5848] mkdir("./syzkaller.Ti7PLZ", 0700 [pid 5847] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5849 attached [pid 5848] <... mkdir resumed>) = 0 [pid 5849] set_robust_list(0x555582195660, 24 [pid 5848] chmod("./syzkaller.Ti7PLZ", 0777 [pid 5847] <... clone resumed>, child_tidptr=0x555582195650) = 5849 [pid 5849] <... set_robust_list resumed>) = 0 [pid 5848] <... chmod resumed>) = 0 [pid 5847] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5849] mkdir("./syzkaller.myMt3K", 0700 [pid 5848] chdir("./syzkaller.Ti7PLZ"./strace-static-x86_64: Process 5850 attached [pid 5847] <... clone resumed>, child_tidptr=0x555582195650) = 5850 [pid 5849] <... mkdir resumed>) = 0 [pid 5848] <... chdir resumed>) = 0 [pid 5850] set_robust_list(0x555582195660, 24 [pid 5848] mkdir("./0", 0777 [pid 5847] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5850] <... set_robust_list resumed>) = 0 [pid 5849] chmod("./syzkaller.myMt3K", 0777 [pid 5850] mkdir("./syzkaller.vE9XLc", 0700 [pid 5849] <... chmod resumed>) = 0 [pid 5848] <... mkdir resumed>) = 0 [pid 5850] <... mkdir resumed>) = 0 [pid 5848] openat(AT_FDCWD, "/dev/loop0", O_RDWR./strace-static-x86_64: Process 5851 attached [pid 5849] chdir("./syzkaller.myMt3K" [pid 5847] <... clone resumed>, child_tidptr=0x555582195650) = 5851 [pid 5850] chmod("./syzkaller.vE9XLc", 0777 [pid 5848] <... openat resumed>) = 3 [pid 5851] set_robust_list(0x555582195660, 24) = 0 [pid 5847] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5851] mkdir("./syzkaller.Evfyx6", 0700 [pid 5849] <... chdir resumed>) = 0 [pid 5848] ioctl(3, LOOP_CLR_FD [pid 5850] <... chmod resumed>) = 0 [pid 5849] mkdir("./0", 0777 [pid 5850] chdir("./syzkaller.vE9XLc") = 0 [pid 5848] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5851] <... mkdir resumed>) = 0 ./strace-static-x86_64: Process 5852 attached [pid 5850] mkdir("./0", 0777 [pid 5849] <... mkdir resumed>) = 0 [pid 5848] close(3 [pid 5847] <... clone resumed>, child_tidptr=0x555582195650) = 5852 [pid 5851] chmod("./syzkaller.Evfyx6", 0777) = 0 [pid 5848] <... close resumed>) = 0 [pid 5851] chdir("./syzkaller.Evfyx6" [pid 5852] set_robust_list(0x555582195660, 24 [pid 5850] <... mkdir resumed>) = 0 [pid 5849] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5850] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5852] <... set_robust_list resumed>) = 0 [pid 5851] <... chdir resumed>) = 0 [pid 5849] <... openat resumed>) = 3 [pid 5852] mkdir("./syzkaller.rVt6cK", 0700 [pid 5851] mkdir("./0", 0777 [pid 5849] ioctl(3, LOOP_CLR_FD [pid 5851] <... mkdir resumed>) = 0 [pid 5849] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5849] close(3 [pid 5852] <... mkdir resumed>) = 0 [pid 5849] <... close resumed>) = 0 [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5855 attached [pid 5851] openat(AT_FDCWD, "/dev/loop3", O_RDWR./strace-static-x86_64: Process 5854 attached [pid 5855] set_robust_list(0x555582195660, 24 [pid 5852] chmod("./syzkaller.rVt6cK", 0777 [pid 5851] <... openat resumed>) = 3 [pid 5850] <... openat resumed>) = 3 [pid 5848] <... clone resumed>, child_tidptr=0x555582195650) = 5854 [pid 5855] <... set_robust_list resumed>) = 0 [pid 5854] set_robust_list(0x555582195660, 24 [pid 5852] <... chmod resumed>) = 0 [pid 5851] ioctl(3, LOOP_CLR_FD [pid 5850] ioctl(3, LOOP_CLR_FD [pid 5854] <... set_robust_list resumed>) = 0 [pid 5855] chdir("./0" [pid 5854] chdir("./0" [pid 5852] chdir("./syzkaller.rVt6cK" [pid 5851] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5850] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5849] <... clone resumed>, child_tidptr=0x555582195650) = 5855 [pid 5854] <... chdir resumed>) = 0 [pid 5852] <... chdir resumed>) = 0 [pid 5851] close(3 [pid 5850] close(3 [pid 5854] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5852] mkdir("./0", 0777 [pid 5851] <... close resumed>) = 0 [pid 5850] <... close resumed>) = 0 [pid 5854] <... prctl resumed>) = 0 [pid 5851] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5856 attached [pid 5855] <... chdir resumed>) = 0 [pid 5854] setpgid(0, 0 [pid 5852] <... mkdir resumed>) = 0 [pid 5850] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5855] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5854] <... setpgid resumed>) = 0 [pid 5855] <... prctl resumed>) = 0 [pid 5855] setpgid(0, 0) = 0 [pid 5855] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC./strace-static-x86_64: Process 5857 attached [pid 5856] set_robust_list(0x555582195660, 24 [pid 5854] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5852] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5851] <... clone resumed>, child_tidptr=0x555582195650) = 5856 [pid 5855] <... openat resumed>) = 3 [pid 5854] <... openat resumed>) = 3 [pid 5852] <... openat resumed>) = 3 [pid 5850] <... clone resumed>, child_tidptr=0x555582195650) = 5857 [pid 5854] write(3, "1000", 4) = 4 [pid 5854] close(3) = 0 [pid 5854] symlink("/dev/binderfs", "./binderfs" [pid 5857] set_robust_list(0x555582195660, 24 [pid 5856] <... set_robust_list resumed>) = 0 [pid 5855] write(3, "1000", 4 [pid 5854] <... symlink resumed>) = 0 [pid 5852] ioctl(3, LOOP_CLR_FD [pid 5857] <... set_robust_list resumed>) = 0 executing program [pid 5856] chdir("./0" [pid 5854] write(1, "executing program\n", 18 [pid 5857] chdir("./0" [pid 5856] <... chdir resumed>) = 0 [pid 5854] <... write resumed>) = 18 [pid 5857] <... chdir resumed>) = 0 [pid 5856] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5854] memfd_create("syzkaller", 0 [pid 5856] <... prctl resumed>) = 0 [pid 5855] <... write resumed>) = 4 [pid 5852] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5855] close(3 [pid 5857] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5856] setpgid(0, 0 [pid 5855] <... close resumed>) = 0 [pid 5852] close(3 [pid 5857] <... prctl resumed>) = 0 [pid 5856] <... setpgid resumed>) = 0 [pid 5855] symlink("/dev/binderfs", "./binderfs" [pid 5854] <... memfd_create resumed>) = 3 [pid 5852] <... close resumed>) = 0 [pid 5857] setpgid(0, 0 [pid 5856] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5855] <... symlink resumed>) = 0 [pid 5854] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0executing program ) = 0x7f8e69e00000 [pid 5857] <... setpgid resumed>) = 0 [pid 5855] write(1, "executing program\n", 18) = 18 [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5857] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5855] memfd_create("syzkaller", 0./strace-static-x86_64: Process 5858 attached ) = 3 [pid 5858] set_robust_list(0x555582195660, 24 [pid 5855] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5858] <... set_robust_list resumed>) = 0 [pid 5855] <... mmap resumed>) = 0x7f8e69e00000 [pid 5858] chdir("./0" [pid 5856] <... openat resumed>) = 3 [pid 5852] <... clone resumed>, child_tidptr=0x555582195650) = 5858 [pid 5857] <... openat resumed>) = 3 [pid 5856] write(3, "1000", 4 [pid 5858] <... chdir resumed>) = 0 [pid 5858] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5858] setpgid(0, 0) = 0 [pid 5857] write(3, "1000", 4 [pid 5856] <... write resumed>) = 4 [pid 5858] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5858] write(3, "1000", 4) = 4 [pid 5858] close(3) = 0 [pid 5856] close(3 [pid 5857] <... write resumed>) = 4 [pid 5856] <... close resumed>) = 0 [pid 5857] close(3 [pid 5858] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5857] <... close resumed>) = 0 [pid 5856] symlink("/dev/binderfs", "./binderfs"executing program [pid 5857] symlink("/dev/binderfs", "./binderfs" [pid 5858] write(1, "executing program\n", 18) = 18 [pid 5858] memfd_create("syzkaller", 0 [pid 5856] <... symlink resumed>) = 0 [pid 5858] <... memfd_create resumed>) = 3 [pid 5857] <... symlink resumed>) = 0 [pid 5856] write(1, "executing program\n", 18 [pid 5857] write(1, "executing program\n", 18executing program executing program ) = 18 [pid 5856] <... write resumed>) = 18 [pid 5858] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5857] memfd_create("syzkaller", 0 [pid 5856] memfd_create("syzkaller", 0 [pid 5858] <... mmap resumed>) = 0x7f8e69e00000 [pid 5856] <... memfd_create resumed>) = 3 [pid 5857] <... memfd_create resumed>) = 3 [pid 5857] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8e69e00000 [pid 5856] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8e69e00000 [pid 5855] 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 [pid 5858] 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 [pid 5854] 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 [pid 5857] 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 [pid 5856] 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 [pid 5855] <... write resumed>) = 16777216 [pid 5855] munmap(0x7f8e69e00000, 138412032 [pid 5858] <... write resumed>) = 16777216 [pid 5855] <... munmap resumed>) = 0 [pid 5858] munmap(0x7f8e69e00000, 138412032 [pid 5854] <... write resumed>) = 16777216 [pid 5855] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5854] munmap(0x7f8e69e00000, 138412032 [pid 5857] <... write resumed>) = 16777216 [pid 5856] <... write resumed>) = 16777216 [pid 5855] <... openat resumed>) = 4 [pid 5855] ioctl(4, LOOP_SET_FD, 3 [pid 5858] <... munmap resumed>) = 0 [pid 5857] munmap(0x7f8e69e00000, 138412032 [pid 5856] munmap(0x7f8e69e00000, 138412032 [pid 5854] <... munmap resumed>) = 0 [pid 5858] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 5858] ioctl(4, LOOP_SET_FD, 3 [pid 5854] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5855] <... ioctl resumed>) = 0 [pid 5855] close(3 [pid 5858] <... ioctl resumed>) = 0 [pid 5857] <... munmap resumed>) = 0 [pid 5856] <... munmap resumed>) = 0 [pid 5854] <... openat resumed>) = 4 [pid 5854] ioctl(4, LOOP_SET_FD, 3 [pid 5857] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5855] <... close resumed>) = 0 [pid 5855] close(4) = 0 [pid 5855] mkdir("./file0", 0777 [pid 5858] close(3 [pid 5856] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5858] <... close resumed>) = 0 [pid 5856] <... openat resumed>) = 4 [pid 5858] close(4 [pid 5856] ioctl(4, LOOP_SET_FD, 3 [pid 5858] <... close resumed>) = 0 [pid 5857] <... openat resumed>) = 4 [pid 5855] <... mkdir resumed>) = 0 [ 74.809972][ T5855] loop1: detected capacity change from 0 to 32768 [ 74.821413][ T5858] loop4: detected capacity change from 0 to 32768 [ 74.841638][ T5854] loop0: detected capacity change from 0 to 32768 [ 74.851599][ T5856] loop3: detected capacity change from 0 to 32768 [pid 5858] mkdir("./file0", 0777 [pid 5857] ioctl(4, LOOP_SET_FD, 3 [pid 5858] <... mkdir resumed>) = 0 [pid 5858] mount("/dev/loop4", "./file0", "jfs", MS_NOSUID|MS_NODEV|MS_POSIXACL|MS_STRICTATIME, "errors=continue,discard=0x000000000000aff9,iocharset=koi8-r,nodiscard,nointegrity,nodiscard,nointegr"... [pid 5854] <... ioctl resumed>) = 0 [pid 5854] close(3) = 0 [pid 5854] close(4) = 0 [pid 5854] mkdir("./file0", 0777) = 0 [pid 5856] <... ioctl resumed>) = 0 [pid 5855] mount("/dev/loop1", "./file0", "jfs", MS_NOSUID|MS_NODEV|MS_POSIXACL|MS_STRICTATIME, "errors=continue,discard=0x000000000000aff9,iocharset=koi8-r,nodiscard,nointegrity,nodiscard,nointegr"... [pid 5854] mount("/dev/loop0", "./file0", "jfs", MS_NOSUID|MS_NODEV|MS_POSIXACL|MS_STRICTATIME, "errors=continue,discard=0x000000000000aff9,iocharset=koi8-r,nodiscard,nointegrity,nodiscard,nointegr"... [pid 5856] close(3) = 0 [pid 5856] close(4) = 0 [pid 5856] mkdir("./file0", 0777) = 0 [pid 5856] mount("/dev/loop3", "./file0", "jfs", MS_NOSUID|MS_NODEV|MS_POSIXACL|MS_STRICTATIME, "errors=continue,discard=0x000000000000aff9,iocharset=koi8-r,nodiscard,nointegrity,nodiscard,nointegr"... [pid 5858] <... mount resumed>) = 0 [pid 5858] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5858] chdir("./file0") = 0 [pid 5858] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5858] exit_group(0 [pid 5855] <... mount resumed>) = 0 [pid 5858] <... exit_group resumed>) = ? [pid 5855] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 5857] <... ioctl resumed>) = 0 [pid 5855] <... openat resumed>) = 3 [pid 5854] <... mount resumed>) = 0 [pid 5858] +++ exited with 0 +++ [pid 5854] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 5857] close(3 [pid 5855] chdir("./file0" [pid 5854] <... openat resumed>) = 3 [pid 5857] <... close resumed>) = 0 [pid 5855] <... chdir resumed>) = 0 [pid 5854] chdir("./file0" [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5858, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=22 /* 0.22 s */} --- [pid 5857] close(4 [pid 5855] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5854] <... chdir resumed>) = 0 [pid 5852] restart_syscall(<... resuming interrupted clone ...> [pid 5857] <... close resumed>) = 0 [pid 5855] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5854] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5852] <... restart_syscall resumed>) = 0 [pid 5857] mkdir("./file0", 0777 [pid 5856] <... mount resumed>) = 0 [pid 5855] exit_group(0 [pid 5854] <... openat resumed>) = -1 EBUSY (Device or resource busy) [ 74.860579][ T5857] loop2: detected capacity change from 0 to 32768 [pid 5854] exit_group(0) = ? [pid 5857] <... mkdir resumed>) = 0 [pid 5856] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 5855] <... exit_group resumed>) = ? [pid 5854] +++ exited with 0 +++ [pid 5857] mount("/dev/loop2", "./file0", "jfs", MS_NOSUID|MS_NODEV|MS_POSIXACL|MS_STRICTATIME, "errors=continue,discard=0x000000000000aff9,iocharset=koi8-r,nodiscard,nointegrity,nodiscard,nointegr"... [pid 5856] <... openat resumed>) = 3 [pid 5852] umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5854, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=26 /* 0.26 s */} --- [pid 5852] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5848] restart_syscall(<... resuming interrupted clone ...> [pid 5852] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5848] <... restart_syscall resumed>) = 0 [pid 5852] newfstatat(3, "", [pid 5856] chdir("./file0" [pid 5852] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5848] umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5852] getdents64(3, [pid 5848] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5848] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5852] <... getdents64 resumed>0x5555821966f0 /* 4 entries */, 32768) = 112 [pid 5848] <... openat resumed>) = 3 [pid 5856] <... chdir resumed>) = 0 [pid 5852] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5848] newfstatat(3, "", [pid 5856] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5848] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5856] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5848] getdents64(3, 0x5555821966f0 /* 4 entries */, 32768) = 112 [pid 5848] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5856] exit_group(0 [pid 5855] +++ exited with 0 +++ [pid 5856] <... exit_group resumed>) = ? [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5855, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=23 /* 0.23 s */} --- [pid 5849] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5856] +++ exited with 0 +++ [pid 5849] umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5851] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5856, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=21 /* 0.21 s */} --- [pid 5849] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5849] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5851] umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5849] <... openat resumed>) = 3 [pid 5851] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5849] newfstatat(3, "", [pid 5851] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5849] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5851] <... openat resumed>) = 3 [pid 5849] getdents64(3, [pid 5851] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5849] <... getdents64 resumed>0x5555821966f0 /* 4 entries */, 32768) = 112 [pid 5857] <... mount resumed>) = 0 [pid 5851] getdents64(3, [pid 5849] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5857] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 5851] <... getdents64 resumed>0x5555821966f0 /* 4 entries */, 32768) = 112 [pid 5851] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5857] <... openat resumed>) = 3 [pid 5857] chdir("./file0") = 0 [pid 5857] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5848] <... umount2 resumed>) = 0 [pid 5848] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5848] newfstatat(AT_FDCWD, "./0/file0", [pid 5857] exit_group(0 [pid 5848] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5857] <... exit_group resumed>) = ? [pid 5848] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5848] openat(AT_FDCWD, "./0/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5848] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5848] getdents64(4, 0x55558219e730 /* 2 entries */, 32768) = 48 [pid 5857] +++ exited with 0 +++ [pid 5850] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5857, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=20 /* 0.20 s */} --- [pid 5850] restart_syscall(<... resuming interrupted clone ...> [pid 5848] getdents64(4, 0x55558219e730 /* 0 entries */, 32768) = 0 [pid 5848] close(4 [pid 5850] <... restart_syscall resumed>) = 0 [pid 5850] umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5850] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5848] <... close resumed>) = 0 [pid 5850] newfstatat(3, "", [pid 5848] rmdir("./0/file0" [pid 5850] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5848] <... rmdir resumed>) = 0 [pid 5850] getdents64(3, 0x5555821966f0 /* 4 entries */, 32768) = 112 [pid 5848] umount2("./0/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5850] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5848] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5848] newfstatat(AT_FDCWD, "./0/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5848] unlink("./0/binderfs") = 0 [pid 5848] getdents64(3, 0x5555821966f0 /* 0 entries */, 32768) = 0 [pid 5848] close(3) = 0 [pid 5848] rmdir("./0") = 0 [pid 5848] mkdir("./1", 0777) = 0 [pid 5848] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 5848] ioctl(3, LOOP_CLR_FD) = 0 [pid 5848] close(3) = 0 [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5862 attached , child_tidptr=0x555582195650) = 5862 [ 74.980030][ T5849] Oops: general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] SMP KASAN PTI [ 74.992097][ T5849] KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037] [ 75.000629][ T5849] CPU: 1 UID: 0 PID: 5849 Comm: syz-executor400 Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 PREEMPT(full) [ 75.013324][ T5849] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 75.023482][ T5849] RIP: 0010:lmLogSync+0x1f1/0x9d0 [ 75.028610][ T5849] Code: 5a 7f fe 4d 8d 7e d8 4c 89 f8 48 c1 e8 03 80 3c 18 00 74 08 4c 89 ff e8 3d aa e2 fe 4d 8b 3f 49 83 c7 30 4c 89 f8 48 c1 e8 03 <80> 3c 18 00 74 08 4c 89 ff e8 21 aa e2 fe 49 8b 3f e8 a9 dc b5 fe [ 75.049128][ T5849] RSP: 0018:ffffc90003f7fa80 EFLAGS: 00010206 [ 75.055635][ T5849] RAX: 0000000000000006 RBX: dffffc0000000000 RCX: ffff88807d699e00 [ 75.064316][ T5849] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 75.072381][ T5849] RBP: ffffc90003f7fb88 R08: ffffc90003f7f9cf R09: 0000000000000000 [ 75.080560][ T5849] R10: ffffc90003f7f868 R11: fffff520007eff3a R12: ffff888032d13800 [ 75.088880][ T5849] R13: dffffc0000000000 R14: ffff88801deaf838 R15: 0000000000000030 [ 75.098658][ T5849] FS: 0000555582195380(0000) GS:ffff888125ce3000(0000) knlGS:0000000000000000 [ 75.107954][ T5849] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 75.114879][ T5849] CR2: 00007f8e72401130 CR3: 0000000074180000 CR4: 00000000003526f0 [ 75.123142][ T5849] Call Trace: [ 75.126428][ T5849] [ 75.129468][ T5849] ? __pfx___mutex_lock+0x10/0x10 [ 75.134605][ T5849] ? __pfx_lmLogSync+0x10/0x10 [ 75.139367][ T5849] ? __pfx_dquot_writeback_dquots+0x10/0x10 [ 75.146180][ T5849] ? __pfx___writeback_inodes_sb_nr+0x10/0x10 [ 75.153331][ T5849] jfs_syncpt+0x7b/0x90 [ 75.157767][ T5849] jfs_sync_fs+0x87/0xa0 [ 75.162285][ T5849] sync_filesystem+0xeb/0x230 [ 75.167420][ T5849] generic_shutdown_super+0x6f/0x2c0 [ 75.173512][ T5849] kill_block_super+0x44/0x90 [ 75.178651][ T5849] deactivate_locked_super+0xbc/0x130 [ 75.184393][ T5849] cleanup_mnt+0x425/0x4c0 [ 75.190103][ T5849] ? lockdep_hardirqs_on+0x9c/0x150 [ 75.195841][ T5849] task_work_run+0x1d4/0x260 [ 75.200907][ T5849] ? __pfx_task_work_run+0x10/0x10 [ 75.206661][ T5849] ? path_umount+0x1ea/0xb70 [ 75.211351][ T5849] ptrace_notify+0x281/0x2c0 [ 75.216366][ T5849] ? __pfx_ptrace_notify+0x10/0x10 [ 75.221544][ T5849] ? __x64_sys_umount+0x122/0x160 [ 75.226748][ T5849] ? __pfx___x64_sys_umount+0x10/0x10 [ 75.232335][ T5849] ? rcu_is_watching+0x15/0xb0 [ 75.237210][ T5849] syscall_exit_work+0xc6/0x1d0 [ 75.242191][ T5849] do_syscall_64+0x2ad/0x3b0 [ 75.246781][ T5849] ? lockdep_hardirqs_on+0x9c/0x150 [ 75.252163][ T5849] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 75.258226][ T5849] ? clear_bhb_loop+0x60/0xb0 [ 75.262906][ T5849] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 75.268915][ T5849] RIP: 0033:0x7f8e72384677 [ 75.273698][ T5849] Code: 07 00 48 83 c4 08 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8 [ 75.293658][ T5849] RSP: 002b:00007ffd4462ca48 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6 [ 75.302117][ T5849] RAX: 0000000000000000 RBX: 0000000000012159 RCX: 00007f8e72384677 [ 75.310347][ T5849] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd4462cb00 [ 75.318684][ T5849] RBP: 00007ffd4462cb00 R08: 0000000000000000 R09: 0000000000000000 [pid 5862] set_robust_list(0x555582195660, 24) = 0 [pid 5862] chdir("./1") = 0 [pid 5862] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5862] setpgid(0, 0) = 0 [pid 5862] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 executing program [pid 5862] write(3, "1000", 4) = 4 [pid 5862] close(3) = 0 [pid 5862] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5862] write(1, "executing program\n", 18) = 18 [pid 5862] memfd_create("syzkaller", 0) = 3 [pid 5862] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8e69e00000 [ 75.326643][ T5849] R10: 00000000ffffffff R11: 0000000000000206 R12: 00007ffd4462db70 [ 75.334597][ T5849] R13: 00005555821966c0 R14: 431bde82d7b634db R15: 00007ffd4462db90 [ 75.342657][ T5849] [ 75.345670][ T5849] Modules linked in: [ 75.350011][ T5849] ---[ end trace 0000000000000000 ]--- [ 75.399573][ T5849] RIP: 0010:lmLogSync+0x1f1/0x9d0 [ 75.405163][ T5849] Code: 5a 7f fe 4d 8d 7e d8 4c 89 f8 48 c1 e8 03 80 3c 18 00 74 08 4c 89 ff e8 3d aa e2 fe 4d 8b 3f 49 83 c7 30 4c 89 f8 48 c1 e8 03 <80> 3c 18 00 74 08 4c 89 ff e8 21 aa e2 fe 49 8b 3f e8 a9 dc b5 fe [ 75.426761][ T5849] RSP: 0018:ffffc90003f7fa80 EFLAGS: 00010206 [ 75.451573][ T5849] RAX: 0000000000000006 RBX: dffffc0000000000 RCX: ffff88807d699e00 [ 75.478389][ T5849] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 75.496210][ T5849] RBP: ffffc90003f7fb88 R08: ffffc90003f7f9cf R09: 0000000000000000 [ 75.527722][ T5849] R10: ffffc90003f7f868 R11: fffff520007eff3a R12: ffff888032d13800 [ 75.535878][ T5849] R13: dffffc0000000000 R14: ffff88801deaf838 R15: 0000000000000030 [ 75.565351][ T5849] FS: 0000555582195380(0000) GS:ffff888125be3000(0000) knlGS:0000000000000000 [ 75.575004][ T5849] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 75.592945][ T5849] CR2: 00007f8e6adff000 CR3: 0000000074180000 CR4: 00000000003526f0 [ 75.613604][ T5849] Kernel panic - not syncing: Fatal exception [ 75.620313][ T5849] Kernel Offset: disabled [ 75.624820][ T5849] Rebooting in 86400 seconds..