./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2481059564 <...> forked to background, child pid 4884 no interfaces have a carrier [ 49.993565][ T4885] 8021q: adding VLAN 0 to HW filter on device bond0 [ 50.014675][ T4885] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.17' (ED25519) to the list of known hosts. execve("./syz-executor2481059564", ["./syz-executor2481059564"], 0x7ffd2d91d740 /* 10 vars */) = 0 brk(NULL) = 0x55555ff7d000 brk(0x55555ff7dd00) = 0x55555ff7dd00 arch_prctl(ARCH_SET_FS, 0x55555ff7d380) = 0 set_tid_address(0x55555ff7d650) = 5222 set_robust_list(0x55555ff7d660, 24) = 0 rseq(0x55555ff7dca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor2481059564", 4096) = 28 getrandom("\xa3\xcf\x39\x5e\xd2\x92\xf8\x68", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55555ff7dd00 brk(0x55555ff9ed00) = 0x55555ff9ed00 brk(0x55555ff9f000) = 0x55555ff9f000 mprotect(0x7fecae3ed000, 16384, PROT_READ) = 0 mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000 mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000 mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000 mkdir("./syzkaller.1cRyJI", 0700) = 0 chmod("./syzkaller.1cRyJI", 0777) = 0 chdir("./syzkaller.1cRyJI") = 0 mkdir("./0", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5224 attached [pid 5224] set_robust_list(0x55555ff7d660, 24 [pid 5222] <... clone resumed>, child_tidptr=0x55555ff7d650) = 5224 [pid 5224] <... set_robust_list resumed>) = 0 [pid 5224] chdir("./0") = 0 [pid 5224] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5224] setpgid(0, 0) = 0 [pid 5224] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5224] write(3, "1000", 4) = 4 [pid 5224] close(3) = 0 [pid 5224] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5224] write(1, "executing program\n", 18executing program ) = 18 [pid 5224] memfd_create("syzkaller", 0) = 3 [pid 5224] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7feca5e00000 [pid 5224] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x10\x01\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x01\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00\x78\x5f\xaa\x3b\xd7\x0e\xce\x68\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152 [pid 5224] munmap(0x7feca5e00000, 138412032) = 0 [pid 5224] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5224] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5224] close(3) = 0 [pid 5224] close(4) = 0 [pid 5224] mkdir("./file0", 0777) = 0 syzkaller login: [ 80.605099][ T5224] loop0: detected capacity change from 0 to 4096 [pid 5224] mount("/dev/loop0", "./file0", "ntfs3", MS_NOEXEC|MS_REC, "") = 0 [pid 5224] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5224] chdir("./file0") = 0 [pid 5224] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5224] open(".", O_RDONLY) = 4 [pid 5224] fcntl(4, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT) = 0 [ 80.648554][ T5224] ntfs3: loop0: Different NTFS sector size (4096) and media sector size (512). [pid 5224] fchmodat(AT_FDCWD, ".", 000) = 0 [pid 5224] exit_group(0) = ? [pid 5224] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5224, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55555ff7e6f0 /* 4 entries */, 32768) = 112 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 [ 80.695015][ T5224] ntfs3: loop0: ino=5, "/" attr_set_size [ 80.701187][ T5224] ntfs3: loop0: Mark volume as dirty due to NTFS errors umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./0/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./0/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555ff86730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555ff86730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./0/file0") = 0 getdents64(3, 0x55555ff7e6f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./0") = 0 mkdir("./1", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 [ 80.782026][ T2530] ------------[ cut here ]------------ [ 80.787776][ T2530] kernel BUG at fs/notify/dnotify/dnotify.c:135! [ 80.795658][ T2530] Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI [ 80.802765][ T2530] CPU: 0 UID: 0 PID: 2530 Comm: kworker/u8:10 Not tainted 6.11.0-rc5-syzkaller-00050-g3ec3f5fc4a91 #0 [ 80.813741][ T2530] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 [ 80.823811][ T2530] Workqueue: events_unbound fsnotify_mark_destroy_workfn close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555ff7d650) = 5225 ./strace-static-x86_64: Process 5225 attached [pid 5225] set_robust_list(0x55555ff7d660, 24) = 0 [pid 5225] chdir("./1") = 0 [ 80.830898][ T2530] RIP: 0010:dnotify_free_mark+0x58/0x60 [ 80.836481][ T2530] Code: 89 df e8 eb b7 da ff 48 83 3b 00 75 17 e8 00 9b 76 ff 48 8b 3d 91 47 eb 0b 4c 89 f6 5b 41 5e e9 5e 0a cf ff e8 e9 9a 76 ff 90 <0f> 0b 66 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 [ 80.856121][ T2530] RSP: 0018:ffffc90009157ae8 EFLAGS: 00010293 [ 80.862228][ T2530] RAX: ffffffff821cf0b7 RBX: ffff88807963c080 RCX: ffff88802a3e0000 [ 80.870278][ T2530] RDX: 0000000000000000 RSI: ffffffff8bead560 RDI: ffff88807963c000 [pid 5225] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [ 80.878270][ T2530] RBP: ffffc90009157bb0 R08: ffffffff934f58ff R09: 1ffffffff269eb1f [ 80.886401][ T2530] R10: dffffc0000000000 R11: ffffffff821cf060 R12: ffff8880155d3800 [ 80.894404][ T2530] R13: ffffc90009157b40 R14: ffff88807963c000 R15: ffff88807963c000 [ 80.902413][ T2530] FS: 0000000000000000(0000) GS:ffff8880b9200000(0000) knlGS:0000000000000000 [ 80.911348][ T2530] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 80.917938][ T2530] CR2: 000055555ff8e738 CR3: 00000000299dc000 CR4: 00000000003506f0 [ 80.925917][ T2530] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 80.933897][ T2530] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 80.941961][ T2530] Call Trace: [ 80.945255][ T2530] [ 80.948190][ T2530] ? __die_body+0x88/0xe0 [ 80.952542][ T2530] ? die+0xcf/0x110 [ 80.956365][ T2530] ? do_trap+0x15a/0x3a0 [ 80.960618][ T2530] ? dnotify_free_mark+0x58/0x60 [ 80.965565][ T2530] ? do_error_trap+0x1dc/0x2c0 [ 80.970339][ T2530] ? dnotify_free_mark+0x58/0x60 [ 80.975314][ T2530] ? __pfx_do_error_trap+0x10/0x10 [ 80.980453][ T2530] ? report_bug+0x3e8/0x500 [ 80.984999][ T2530] ? handle_invalid_op+0x34/0x40 [ 80.989950][ T2530] ? dnotify_free_mark+0x58/0x60 [ 80.994892][ T2530] ? exc_invalid_op+0x38/0x50 [ 80.999581][ T2530] ? asm_exc_invalid_op+0x1a/0x20 [ 81.004615][ T2530] ? __pfx_dnotify_free_mark+0x10/0x10 [ 81.010083][ T2530] ? dnotify_free_mark+0x57/0x60 [ 81.015063][ T2530] ? dnotify_free_mark+0x58/0x60 [ 81.020006][ T2530] ? dnotify_free_mark+0x57/0x60 [ 81.024953][ T2530] fsnotify_mark_destroy_workfn+0x2cf/0x350 [ 81.030858][ T2530] ? __pfx_fsnotify_mark_destroy_workfn+0x10/0x10 [ 81.037282][ T2530] ? process_scheduled_works+0x945/0x1830 [ 81.043016][ T2530] process_scheduled_works+0xa2c/0x1830 [ 81.048584][ T2530] ? __pfx_process_scheduled_works+0x10/0x10 [ 81.054581][ T2530] ? assign_work+0x364/0x3d0 [ 81.059183][ T2530] worker_thread+0x86d/0xd10 [ 81.063794][ T2530] ? __kthread_parkme+0x169/0x1d0 [ 81.068834][ T2530] ? __pfx_worker_thread+0x10/0x10 [ 81.073965][ T2530] kthread+0x2f0/0x390 [ 81.078042][ T2530] ? __pfx_worker_thread+0x10/0x10 [pid 5225] setpgid(0, 0) = 0 [pid 5225] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5225] write(3, "1000", 4) = 4 [pid 5225] close(3) = 0 executing program [pid 5225] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5225] write(1, "executing program\n", 18) = 18 [pid 5225] memfd_create("syzkaller", 0) = 3 [pid 5225] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7feca5e00000 [ 81.083165][ T2530] ? __pfx_kthread+0x10/0x10 [ 81.087772][ T2530] ret_from_fork+0x4b/0x80 [ 81.092200][ T2530] ? __pfx_kthread+0x10/0x10 [ 81.096831][ T2530] ret_from_fork_asm+0x1a/0x30 [ 81.101623][ T2530] [ 81.104643][ T2530] Modules linked in: [ 81.111084][ T2530] ---[ end trace 0000000000000000 ]--- [ 81.117008][ T2530] RIP: 0010:dnotify_free_mark+0x58/0x60 [ 81.122675][ T2530] Code: 89 df e8 eb b7 da ff 48 83 3b 00 75 17 e8 00 9b 76 ff 48 8b 3d 91 47 eb 0b 4c 89 f6 5b 41 5e e9 5e 0a cf ff e8 e9 9a 76 ff 90 <0f> 0b 66 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 [ 81.142521][ T2530] RSP: 0018:ffffc90009157ae8 EFLAGS: 00010293 [ 81.148628][ T2530] RAX: ffffffff821cf0b7 RBX: ffff88807963c080 RCX: ffff88802a3e0000 [ 81.157039][ T2530] RDX: 0000000000000000 RSI: ffffffff8bead560 RDI: ffff88807963c000 [ 81.165123][ T2530] RBP: ffffc90009157bb0 R08: ffffffff934f58ff R09: 1ffffffff269eb1f [ 81.173159][ T2530] R10: dffffc0000000000 R11: ffffffff821cf060 R12: ffff8880155d3800 [pid 5225] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x10\x01\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x01\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00\x78\x5f\xaa\x3b\xd7\x0e\xce\x68\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152 [pid 5225] munmap(0x7feca5e00000, 138412032) = 0 [pid 5225] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5225] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5225] close(3) = 0 [ 81.181158][ T2530] R13: ffffc90009157b40 R14: ffff88807963c000 R15: ffff88807963c000 [ 81.189296][ T2530] FS: 0000000000000000(0000) GS:ffff8880b9200000(0000) knlGS:0000000000000000 [ 81.198296][ T2530] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 81.204981][ T2530] CR2: 000055555ff8e738 CR3: 0000000079d16000 CR4: 00000000003506f0 [ 81.209518][ T5225] loop0: detected capacity change from 0 to 4096 [ 81.213035][ T2530] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [pid 5225] close(4) = 0 [pid 5225] mkdir("./file0", 0777) = 0 [ 81.227617][ T2530] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 81.236073][ T2530] Kernel panic - not syncing: Fatal exception [ 81.242445][ T2530] Kernel Offset: disabled [ 81.246791][ T2530] Rebooting in 86400 seconds..