ci2-upstream-fs/strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ci2-upstream-fs/syz-executor1919444250 <...> Warning: Permanently added '10.128.0.52' (ED25519) to the list of known hosts. execve("ci2-upstream-fs/syz-executor1919444250", ["ci2-upstream-fs/syz-executor1919444250"], 0x7ffe44980540 /* 10 vars */) = 0 brk(NULL) = 0x55558d7ec000 brk(0x55558d7ecd80) = 0x55558d7ecd80 arch_prctl(ARCH_SET_FS, 0x55558d7ec400) = 0 set_tid_address(0x55558d7ec6d0) = 5597 set_robust_list(0x55558d7ec6e0, 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-executor1919444250", 4096) = 44 getrandom("\x59\xf8\x1d\x2c\x2d\x03\xa0\x5f", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55558d7ecd80 brk(0x55558d80dd80) = 0x55558d80dd80 brk(0x55558d80e000) = 0x55558d80e000 mprotect(0x7f656e87f000, 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 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 [pid 5598] set_robust_list(0x55558d7ec6e0, 24 [pid 5597] <... clone resumed>, child_tidptr=0x55558d7ec6d0) = 5598 [pid 5598] <... set_robust_list resumed>) = 0 [pid 5597] rt_sigprocmask(SIG_SETMASK, [] [pid 5598] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5597] <... rt_sigprocmask resumed>, NULL, 8) = 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 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) = 0x7f65663c8000 [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"..., 32768) = 32768 [pid 5598] munmap(0x7f65663c8000, 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 [pid 5598] mount("/dev/loop0", "./file1", "minix", MS_SYNCHRONOUS|MS_SILENT, "") = 0 syzkaller login: [ 84.299679][ T5598] loop0: detected capacity change from 0 to 64 [pid 5598] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [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 [ 84.409419][ T5598] ------------[ cut here ]------------ [ 84.409430][ T5598] inode->i_nlink == 0 [ 84.409438][ T5598] WARNING: fs/inode.c:408 at drop_nlink+0xc5/0x110, CPU#1: syz-executor191/5598 [ 84.428129][ T5598] Modules linked in: [ 84.432048][ T5598] CPU: 1 UID: 0 PID: 5598 Comm: syz-executor191 Not tainted syzkaller #0 PREEMPT_{RT,(full)} [ 84.442512][ T5598] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 84.452809][ T5598] RIP: 0010:drop_nlink+0xc5/0x110 [ 84.457922][ T5598] Code: 50 09 00 00 be 08 00 00 00 e8 57 42 e9 ff f0 48 ff 83 50 09 00 00 5b 41 5c 41 5e 41 5f 5d e9 c2 fb 13 09 cc e8 7c 7a 7c ff 90 <0f> 0b 90 eb 81 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c 5b ff ff ff [ 84.477646][ T5598] RSP: 0018:ffffc90004c2fd10 EFLAGS: 00010293 [ 84.483807][ T5598] RAX: ffffffff824a5ee4 RBX: ffff888034639398 RCX: ffff8880394c8000 [ 84.491836][ T5598] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 84.500739][ T5598] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 84.508943][ T5598] R10: dffffc0000000000 R11: fffffbfff2164730 R12: 1ffff110068c727c [ 84.516967][ T5598] R13: dffffc0000000000 R14: ffff8880346393e0 R15: dffffc0000000000 [ 84.525292][ T5598] FS: 000055558d7ec400(0000) GS:ffff888124abb000(0000) knlGS:0000000000000000 [ 84.534278][ T5598] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 84.541433][ T5598] CR2: 00007fdb49f75000 CR3: 000000003c6f4000 CR4: 00000000003526f0 [ 84.551314][ T5598] Call Trace: [ 84.554982][ T5598] [ 84.557975][ T5598] minix_rmdir+0xfc/0x140 [ 84.562366][ T5598] vfs_rmdir+0x3e9/0x6b0 [ 84.566647][ T5598] ? bpf_lsm_path_rmdir+0x9/0x20 [ 84.571611][ T5598] filename_rmdir+0x292/0x520 [ 84.576541][ T5598] ? __pfx_filename_rmdir+0x10/0x10 [ 84.581753][ T5598] ? do_getname+0x151/0x250 [ 84.586293][ T5598] __se_sys_rmdir+0x2e/0x140 [ 84.591936][ T5598] do_syscall_64+0x166/0x520 [ 84.596676][ T5598] ? trace_irq_disable+0x3b/0x140 [ 84.601822][ T5598] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 84.608768][ T5598] ? clear_bhb_loop+0x70/0xc0 [ 84.614178][ T5598] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 84.620217][ T5598] RIP: 0033:0x7f656e7f4869 [ 84.624865][ T5598] Code: c0 79 93 eb d5 48 8d 7c 1d 00 eb 99 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 d8 ff ff ff f7 d8 64 89 01 48 [ 84.644860][ T5598] RSP: 002b:00007fffc6075818 EFLAGS: 00000246 ORIG_RAX: 0000000000000054 [ 84.653450][ T5598] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f656e7f4869 [ 84.662882][ T5598] RDX: 00007fffc60756a0 RSI: 0000000000000000 RDI: 0000200000000040 [ 84.671009][ T5598] RBP: 0000000000000001 R08: 0000000000000000 R09: 000055558d7ed560 [ 84.679037][ T5598] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fffc6075840 [ 84.687208][ T5598] R13: 0000000000000002 R14: 431bde82d7b634db R15: 00007f656e85404b [ 84.695218][ T5598] [ 84.698883][ T5598] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 84.706161][ T5598] CPU: 1 UID: 0 PID: 5598 Comm: syz-executor191 Not tainted syzkaller #0 PREEMPT_{RT,(full)} [ 84.716517][ T5598] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 84.726850][ T5598] Call Trace: [ 84.730253][ T5598] [ 84.733249][ T5598] vpanic+0x56d/0xa60 [ 84.737255][ T5598] ? __pfx__printk+0x10/0x10 [ 84.741843][ T5598] ? __pfx_vpanic+0x10/0x10 [ 84.746351][ T5598] ? is_bpf_text_address+0x292/0x2b0 [ 84.751667][ T5598] ? is_bpf_text_address+0x26/0x2b0 [ 84.756947][ T5598] panic+0xc5/0xd0 [ 84.760713][ T5598] ? __pfx_panic+0x10/0x10 [ 84.765151][ T5598] __warn+0x315/0x4c0 [ 84.769264][ T5598] ? drop_nlink+0xc5/0x110 [ 84.773694][ T5598] ? drop_nlink+0xc5/0x110 [ 84.778221][ T5598] __report_bug+0x276/0x570 [ 84.782790][ T5598] ? drop_nlink+0xc5/0x110 [ 84.787224][ T5598] ? __pfx___report_bug+0x10/0x10 [ 84.792567][ T5598] ? _raw_spin_unlock_irqrestore+0x30/0x80 [ 84.798580][ T5598] ? rt_mutex_slowunlock+0x4ee/0xa30 [ 84.803919][ T5598] ? drop_nlink+0xc5/0x110 [ 84.808358][ T5598] report_bug+0x16b/0x220 [ 84.812743][ T5598] ? drop_nlink+0xc5/0x110 [ 84.817161][ T5598] ? drop_nlink+0xc7/0x110 [ 84.821572][ T5598] handle_bug+0x9c/0x200 [ 84.825839][ T5598] exc_invalid_op+0x1a/0x50 [ 84.830691][ T5598] asm_exc_invalid_op+0x1a/0x20 [ 84.835561][ T5598] RIP: 0010:drop_nlink+0xc5/0x110 [ 84.841390][ T5598] Code: 50 09 00 00 be 08 00 00 00 e8 57 42 e9 ff f0 48 ff 83 50 09 00 00 5b 41 5c 41 5e 41 5f 5d e9 c2 fb 13 09 cc e8 7c 7a 7c ff 90 <0f> 0b 90 eb 81 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c 5b ff ff ff [ 84.860999][ T5598] RSP: 0018:ffffc90004c2fd10 EFLAGS: 00010293 [ 84.867079][ T5598] RAX: ffffffff824a5ee4 RBX: ffff888034639398 RCX: ffff8880394c8000 [ 84.875076][ T5598] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 84.883059][ T5598] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 84.891036][ T5598] R10: dffffc0000000000 R11: fffffbfff2164730 R12: 1ffff110068c727c [ 84.899015][ T5598] R13: dffffc0000000000 R14: ffff8880346393e0 R15: dffffc0000000000 [ 84.906995][ T5598] ? drop_nlink+0xc4/0x110 [ 84.911439][ T5598] minix_rmdir+0xfc/0x140 [ 84.915792][ T5598] vfs_rmdir+0x3e9/0x6b0 [ 84.920129][ T5598] ? bpf_lsm_path_rmdir+0x9/0x20 [ 84.925065][ T5598] filename_rmdir+0x292/0x520 [ 84.929833][ T5598] ? __pfx_filename_rmdir+0x10/0x10 [ 84.935045][ T5598] ? do_getname+0x151/0x250 [ 84.939659][ T5598] __se_sys_rmdir+0x2e/0x140 [ 84.944249][ T5598] do_syscall_64+0x166/0x520 [ 84.948859][ T5598] ? trace_irq_disable+0x3b/0x140 [ 84.953904][ T5598] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 84.960082][ T5598] ? clear_bhb_loop+0x70/0xc0 [ 84.964771][ T5598] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 84.970665][ T5598] RIP: 0033:0x7f656e7f4869 [ 84.975091][ T5598] Code: c0 79 93 eb d5 48 8d 7c 1d 00 eb 99 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 d8 ff ff ff f7 d8 64 89 01 48 [ 84.994690][ T5598] RSP: 002b:00007fffc6075818 EFLAGS: 00000246 ORIG_RAX: 0000000000000054 [ 85.003196][ T5598] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f656e7f4869 [ 85.011176][ T5598] RDX: 00007fffc60756a0 RSI: 0000000000000000 RDI: 0000200000000040 [ 85.019150][ T5598] RBP: 0000000000000001 R08: 0000000000000000 R09: 000055558d7ed560 [ 85.027157][ T5598] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fffc6075840 [ 85.035136][ T5598] R13: 0000000000000002 R14: 431bde82d7b634db R15: 00007f656e85404b [ 85.043506][ T5598] [ 85.046832][ T5598] Kernel Offset: disabled [ 85.051246][ T5598] Rebooting in 86400 seconds..