./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor776963980 <...> no interfaces have a carrier [ 58.212651][ T5486] 8021q: adding VLAN 0 to HW filter on device bond0 [ 58.227917][ T5486] eql: remember to turn off Van-Jacobson compression on your slave devices Starting crond: OK Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.229' (ED25519) to the list of known hosts. execve("./syz-executor776963980", ["./syz-executor776963980"], 0x7ffff3aee440 /* 10 vars */) = 0 brk(NULL) = 0x55556eb47000 brk(0x55556eb47d00) = 0x55556eb47d00 arch_prctl(ARCH_SET_FS, 0x55556eb47380) = 0 set_tid_address(0x55556eb47650) = 5824 set_robust_list(0x55556eb47660, 24) = 0 rseq(0x55556eb47ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor776963980", 4096) = 27 getrandom("\xcb\xe8\xc7\xd2\x04\xb5\x3d\xe4", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55556eb47d00 brk(0x55556eb68d00) = 0x55556eb68d00 brk(0x55556eb69000) = 0x55556eb69000 mprotect(0x7f5362ecd000, 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 mkdir("./syzkaller.CYKdMN", 0700) = 0 chmod("./syzkaller.CYKdMN", 0777) = 0 chdir("./syzkaller.CYKdMN") = 0 unshare(CLONE_NEWPID) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5825 attached [pid 5825] set_robust_list(0x55556eb47660, 24 [pid 5824] <... clone resumed>, child_tidptr=0x55556eb47650) = 5825 [pid 5825] <... set_robust_list resumed>) = 0 [pid 5825] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5825] getppid() = 0 [pid 5825] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5825] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5825] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5825] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5825] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5825] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5825] unshare(CLONE_NEWNS) = 0 [pid 5825] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5825] unshare(CLONE_NEWIPC) = 0 [pid 5825] unshare(CLONE_NEWCGROUP) = 0 [pid 5825] unshare(CLONE_NEWUTS) = 0 [pid 5825] unshare(CLONE_SYSVSEM) = 0 [pid 5825] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5825] write(3, "16777216", 8) = 8 [pid 5825] close(3) = 0 [pid 5825] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5825] write(3, "536870912", 9) = 9 [pid 5825] close(3) = 0 [pid 5825] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5825] write(3, "1024", 4) = 4 [pid 5825] close(3) = 0 [pid 5825] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5825] write(3, "8192", 4) = 4 [pid 5825] close(3) = 0 [pid 5825] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5825] write(3, "1024", 4) = 4 [pid 5825] close(3) = 0 [pid 5825] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5825] write(3, "1024", 4) = 4 [pid 5825] close(3) = 0 [pid 5825] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5825] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5825] close(3) = 0 [pid 5825] getpid() = 1 [pid 5825] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1<) = 0 [pid 5825] umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5825] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5825] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=80, ...}, AT_EMPTY_PATH) = 0 [pid 5825] getdents64(3, 0x55556eb486f0 /* 4 entries */, 32768) = 112 [pid 5825] umount2("./0/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EBUSY (Device or resource busy) [pid 5825] newfstatat(AT_FDCWD, "./0/file1", {st_mode=S_IFDIR|0755, st_size=312, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5825] umount2("./0/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EBUSY (Device or resource busy) [pid 5825] openat(AT_FDCWD, "./0/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5825] newfstatat(4, "", {st_mode=S_IFDIR|0755, st_size=312, ...}, AT_EMPTY_PATH) = 0 [pid 5825] getdents64(4, 0x55556eb50730 /* 4 entries */, 32768) = 112 [pid 5825] umount2("\x2e\x2f\x30\x2f\x66\x69\x6c\x65\x31\x2f\x2e\x01", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 ELOOP (Too many levels of symbolic links) [pid 5825] newfstatat(AT_FDCWD, "\x2e\x2f\x30\x2f\x66\x69\x6c\x65\x31\x2f\x2e\x01", 0x7ffe3001b4d0, AT_SYMLINK_NOFOLLOW) = -1 ELOOP (Too many levels of symbolic links) [pid 5825] exit_group(1) = ? [ 88.426728][ T5825] VFS: Lookup of '.' in ocfs2 loop0 would have caused loop [ 88.444881][ T5825] VFS: Lookup of '.' in ocfs2 loop0 would have caused loop [ 88.498979][ T5825] ocfs2: Unmounting device (7,0) on (node local) [ 88.509497][ T5825] VFS: Busy inodes after unmount of loop0 (ocfs2) [ 88.509757][ T5825] ------------[ cut here ]------------ [ 88.522099][ T5825] kernel BUG at fs/super.c:653! [ 88.528193][ T5825] Oops: invalid opcode: 0000 [#1] SMP KASAN PTI [ 88.534479][ T5825] CPU: 0 UID: 0 PID: 5825 Comm: syz-executor776 Not tainted 6.16.0-rc3-syzkaller-00057-g92ca6c498a5e #0 PREEMPT(full) [ 88.546887][ T5825] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 88.556938][ T5825] RIP: 0010:generic_shutdown_super+0x2bc/0x2c0 [ 88.563112][ T5825] Code: 03 42 80 3c 28 00 74 08 4c 89 f7 e8 5e f2 ee ff 49 8b 16 48 81 c3 70 06 00 00 48 c7 c7 00 1c 99 8b 48 89 de e8 55 d8 f4 fe 90 <0f> 0b 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f [ 88.582729][ T5825] RSP: 0018:ffffc9000432fb80 EFLAGS: 00010246 [ 88.588798][ T5825] RAX: 000000000000002f RBX: ffff88807ae48670 RCX: 783a4995bbf4b700 [ 88.596773][ T5825] RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 [ 88.604741][ T5825] RBP: 1ffff1100f5c90f1 R08: ffff8880b8624293 R09: 1ffff110170c4852 [ 88.612713][ T5825] R10: dffffc0000000000 R11: ffffed10170c4853 R12: 0000000000000000 [ 88.620681][ T5825] R13: dffffc0000000000 R14: ffffffff8e676cc0 R15: ffff88807ae48788 [ 88.628649][ T5825] FS: 0000000000000000(0000) GS:ffff888125c83000(0000) knlGS:0000000000000000 [ 88.637578][ T5825] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 88.644156][ T5825] CR2: 000055556eb58738 CR3: 00000000353da000 CR4: 00000000003526f0 [ 88.652122][ T5825] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 88.660084][ T5825] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 88.668049][ T5825] Call Trace: [ 88.671325][ T5825] [ 88.674260][ T5825] kill_block_super+0x44/0x90 [ 88.678939][ T5825] deactivate_locked_super+0xbc/0x130 [ 88.684307][ T5825] cleanup_mnt+0x425/0x4c0 [ 88.688750][ T5825] ? lockdep_hardirqs_on+0x9c/0x150 [ 88.693963][ T5825] task_work_run+0x1d1/0x260 [ 88.698553][ T5825] ? __pfx_task_work_run+0x10/0x10 [ 88.703663][ T5825] ? kmem_cache_free+0x18f/0x400 [ 88.708603][ T5825] do_exit+0x6b5/0x22e0 [ 88.712760][ T5825] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 88.718145][ T5825] ? __pfx_do_exit+0x10/0x10 [ 88.722758][ T5825] ? _raw_spin_unlock_irq+0x23/0x50 [ 88.727962][ T5825] ? lockdep_hardirqs_on+0x9c/0x150 [ 88.733180][ T5825] do_group_exit+0x21c/0x2d0 [ 88.737784][ T5825] __x64_sys_exit_group+0x3f/0x40 [ 88.742806][ T5825] x64_sys_call+0x21ba/0x21c0 [ 88.747484][ T5825] do_syscall_64+0xfa/0x3b0 [ 88.751999][ T5825] ? lockdep_hardirqs_on+0x9c/0x150 [ 88.757203][ T5825] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 88.763265][ T5825] ? clear_bhb_loop+0x60/0xb0 [ 88.767938][ T5825] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 88.773830][ T5825] RIP: 0033:0x7f5362e527c9 [ 88.778298][ T5825] Code: Unable to access opcode bytes at 0x7f5362e5279f. [ 88.785313][ T5825] RSP: 002b:00007ffe3001b448 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 88.793725][ T5825] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f5362e527c9 [ 88.801706][ T5825] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 88.809685][ T5825] RBP: 00007f5362ed3390 R08: ffffffffffffffb8 R09: 0000000000000000 [ 88.817669][ T5825] R10: 0000000000000100 R11: 0000000000000246 R12: 00007f5362ed3390 [ 88.825649][ T5825] R13: 0000000000000000 R14: 00007f5362ed4100 R15: 00007f5362e20780 [ 88.833635][ T5825] [ 88.836655][ T5825] Modules linked in: [ 88.840906][ T5825] ---[ end trace 0000000000000000 ]--- [ 88.846751][ T5825] RIP: 0010:generic_shutdown_super+0x2bc/0x2c0 [ 88.852948][ T5825] Code: 03 42 80 3c 28 00 74 08 4c 89 f7 e8 5e f2 ee ff 49 8b 16 48 81 c3 70 06 00 00 48 c7 c7 00 1c 99 8b 48 89 de e8 55 d8 f4 fe 90 <0f> 0b 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f [ 88.874712][ T5825] RSP: 0018:ffffc9000432fb80 EFLAGS: 00010246 [ 88.880881][ T5825] RAX: 000000000000002f RBX: ffff88807ae48670 RCX: 783a4995bbf4b700 [ 88.888994][ T5825] RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 [ 88.897065][ T5825] RBP: 1ffff1100f5c90f1 R08: ffff8880b8624293 R09: 1ffff110170c4852 [ 88.905123][ T5825] R10: dffffc0000000000 R11: ffffed10170c4853 R12: 0000000000000000 [ 88.913129][ T5825] R13: dffffc0000000000 R14: ffffffff8e676cc0 R15: ffff88807ae48788 [ 88.921196][ T5825] FS: 0000000000000000(0000) GS:ffff888125c83000(0000) knlGS:0000000000000000 [ 88.930198][ T5825] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 88.936879][ T5825] CR2: 000055556eb58738 CR3: 0000000027ace000 CR4: 00000000003526f0 [ 88.944905][ T5825] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 88.952883][ T5825] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 88.961047][ T5825] Kernel panic - not syncing: Fatal exception [ 88.967452][ T5825] Kernel Offset: disabled [ 88.971784][ T5825] Rebooting in 86400 seconds..