./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor258625735
<...>
Warning: Permanently added '10.128.1.113' (ED25519) to the list of known hosts.
execve("./syz-executor258625735", ["./syz-executor258625735"], 0x7ffef5562920 /* 10 vars */) = 0
brk(NULL) = 0x55557fead000
brk(0x55557feadd00) = 0x55557feadd00
arch_prctl(ARCH_SET_FS, 0x55557fead380) = 0
set_tid_address(0x55557fead650) = 5833
set_robust_list(0x55557fead660, 24) = 0
rseq(0x55557feadca0, 0x20, 0, 0x53053053) = 0
prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0
readlink("/proc/self/exe", "/root/syz-executor258625735", 4096) = 27
getrandom("\xb4\xfa\x12\xe9\x44\x2a\xf4\x82", 8, GRND_NONBLOCK) = 8
brk(NULL) = 0x55557feadd00
brk(0x55557feced00) = 0x55557feced00
brk(0x55557fecf000) = 0x55557fecf000
mprotect(0x7f8980257000, 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
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 5835 attached
, child_tidptr=0x55557fead650) = 5835
[pid 5835] set_robust_list(0x55557fead660, 24) = 0
[pid 5835] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5835] setpgid(0, 0) = 0
[pid 5835] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5835] write(3, "1000", 4) = 4
[pid 5835] close(3) = 0
[pid 5835] write(1, "executing program\n", 18executing program
) = 18
[pid 5835] memfd_create("syzkaller", 0) = 3
[pid 5835] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8977c00000
[pid 5835] 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"..., 67108864) = 67108864
[pid 5835] munmap(0x7f8977c00000, 138412032) = 0
[pid 5835] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5835] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5835] close(3) = 0
[pid 5835] close(4) = 0
[pid 5835] mkdir("./file2", 0777) = 0
[ 68.151947][ T5835] loop0: detected capacity change from 0 to 131072
[ 68.189579][ T5835] F2FS-fs (loop0): invalid crc value
[pid 5835] mount("/dev/loop0", "./file2", "f2fs", MS_DIRSYNC|MS_RELATIME, "") = 0
[pid 5835] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3
[pid 5835] chdir("./file2") = 0
[pid 5835] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[ 68.202712][ T5835] F2FS-fs (loop0): Found nat_bits in checkpoint
[ 68.236960][ T5835] F2FS-fs (loop0): Mounted with checkpoint version = 48b305e4
[ 68.281269][ T5835] ------------[ cut here ]------------
[ 68.286949][ T5835] WARNING: CPU: 1 PID: 5835 at fs/inode.c:407 drop_nlink+0xc4/0x110
[ 68.295053][ T5835] Modules linked in:
[ 68.299079][ T5835] CPU: 1 UID: 0 PID: 5835 Comm: syz-executor258 Not tainted 6.12.0-syzkaller-07834-g06afb0f36106 #0
[ 68.310292][ T5835] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
[ 68.320647][ T5835] RIP: 0010:drop_nlink+0xc4/0x110
[ 68.325776][ T5835] Code: bb 70 07 00 00 be 08 00 00 00 e8 27 d8 e5 ff f0 48 ff 83 70 07 00 00 5b 41 5c 41 5e 41 5f 5d c3 cc cc cc cc e8 9d 40 7e ff 90 <0f> 0b 90 eb 83 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c 5c ff ff ff
[ 68.345510][ T5835] RSP: 0018:ffffc9000406fb98 EFLAGS: 00010293
[ 68.351583][ T5835] RAX: ffffffff82170c43 RBX: 1ffff1100e586354 RCX: ffff88802f3b9e00
[ 68.359727][ T5835] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[ 68.367884][ T5835] RBP: 0000000000000000 R08: ffffffff82170bc3 R09: 1ffffffff2038026
[ 68.375937][ T5835] R10: dffffc0000000000 R11: fffffbfff2038027 R12: ffff888072c31aa0
[ 68.384108][ T5835] R13: dffffc0000000000 R14: ffff888072c31a58 R15: dffffc0000000000
[ 68.392099][ T5835] FS: 000055557fead380(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
[ 68.401169][ T5835] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 68.407860][ T5835] CR2: 000000002549c538 CR3: 0000000011fbe000 CR4: 00000000003526f0
[ 68.415929][ T5835] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 68.424006][ T5835] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 68.432016][ T5835] Call Trace:
[ 68.435366][ T5835]
[ 68.438327][ T5835] ? __warn+0x168/0x4e0
[ 68.442489][ T5835] ? drop_nlink+0xc4/0x110
[ 68.446996][ T5835] ? report_bug+0x2b3/0x500
[ 68.451536][ T5835] ? drop_nlink+0xc4/0x110
[ 68.456034][ T5835] ? handle_bug+0x60/0x90
[ 68.460397][ T5835] ? exc_invalid_op+0x1a/0x50
[ 68.465234][ T5835] ? asm_exc_invalid_op+0x1a/0x20
[ 68.470296][ T5835] ? drop_nlink+0x43/0x110
[ 68.474863][ T5835] ? drop_nlink+0xc3/0x110
[ 68.479332][ T5835] ? drop_nlink+0xc4/0x110
[ 68.483856][ T5835] ? drop_nlink+0xc3/0x110
[ 68.488300][ T5835] f2fs_drop_nlink+0xd6/0x380
[ 68.493108][ T5835] f2fs_unlink+0x47f/0x960
[ 68.497551][ T5835] ? __pfx_f2fs_unlink+0x10/0x10
[ 68.502495][ T5835] ? bpf_lsm_inode_unlink+0x9/0x10
[ 68.507770][ T5835] ? security_inode_unlink+0xd9/0x340
[ 68.513208][ T5835] vfs_unlink+0x365/0x650
[ 68.517548][ T5835] do_unlinkat+0x4ae/0x830
[ 68.521975][ T5835] ? __pfx_do_unlinkat+0x10/0x10
[ 68.527016][ T5835] ? __might_fault+0xaa/0x120
[ 68.531724][ T5835] ? __might_fault+0xc6/0x120
[ 68.536486][ T5835] ? strncpy_from_user+0x13a/0x260
[ 68.541657][ T5835] ? getname_flags+0x1e3/0x540
[ 68.546534][ T5835] __x64_sys_unlinkat+0xcc/0xf0
[ 68.551437][ T5835] do_syscall_64+0xf3/0x230
[ 68.556001][ T5835] ? clear_bhb_loop+0x35/0x90
[ 68.560706][ T5835] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 68.566679][ T5835] RIP: 0033:0x7f89801d3a59
[ 68.571149][ T5835] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 17 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48
[ 68.591208][ T5835] RSP: 002b:00007ffd8f360738 EFLAGS: 00000246 ORIG_RAX: 0000000000000107
[ 68.599692][ T5835] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f89801d3a59
[ 68.607823][ T5835] RDX: 0000000000000000 RSI: 0000000020000380 RDI: 00000000ffffff9c
[ 68.615846][ T5835] RBP: 00007f89802575f0 R08: 00000000000105b7 R09: 000055557feae4c0
[ 68.623887][ T5835] R10: 00007ffd8f360600 R11: 0000000000000246 R12: 00007ffd8f360760
[ 68.631907][ T5835] R13: 00007ffd8f360988 R14: 431bde82d7b634db R15: 00007f898021c03b
[ 68.639958][ T5835]
[ 68.643044][ T5835] Kernel panic - not syncing: kernel: panic_on_warn set ...
[ 68.650321][ T5835] CPU: 1 UID: 0 PID: 5835 Comm: syz-executor258 Not tainted 6.12.0-syzkaller-07834-g06afb0f36106 #0
[ 68.661077][ T5835] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
[ 68.671131][ T5835] Call Trace:
[ 68.674411][ T5835]
[ 68.677358][ T5835] dump_stack_lvl+0x241/0x360
[ 68.682049][ T5835] ? __pfx_dump_stack_lvl+0x10/0x10
[ 68.687288][ T5835] ? __pfx__printk+0x10/0x10
[ 68.691887][ T5835] ? _printk+0xd5/0x120
[ 68.696159][ T5835] ? __init_begin+0x41000/0x41000
[ 68.701301][ T5835] ? vscnprintf+0x5d/0x90
[ 68.705650][ T5835] panic+0x349/0x880
[ 68.709583][ T5835] ? __warn+0x177/0x4e0
[ 68.713740][ T5835] ? __pfx_panic+0x10/0x10
[ 68.718158][ T5835] ? show_trace_log_lvl+0x3b2/0x410
[ 68.723372][ T5835] __warn+0x34b/0x4e0
[ 68.727358][ T5835] ? drop_nlink+0xc4/0x110
[ 68.731791][ T5835] report_bug+0x2b3/0x500
[ 68.736121][ T5835] ? drop_nlink+0xc4/0x110
[ 68.740604][ T5835] handle_bug+0x60/0x90
[ 68.744804][ T5835] exc_invalid_op+0x1a/0x50
[ 68.749327][ T5835] asm_exc_invalid_op+0x1a/0x20
[ 68.754364][ T5835] RIP: 0010:drop_nlink+0xc4/0x110
[ 68.759566][ T5835] Code: bb 70 07 00 00 be 08 00 00 00 e8 27 d8 e5 ff f0 48 ff 83 70 07 00 00 5b 41 5c 41 5e 41 5f 5d c3 cc cc cc cc e8 9d 40 7e ff 90 <0f> 0b 90 eb 83 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c 5c ff ff ff
[ 68.779177][ T5835] RSP: 0018:ffffc9000406fb98 EFLAGS: 00010293
[ 68.785249][ T5835] RAX: ffffffff82170c43 RBX: 1ffff1100e586354 RCX: ffff88802f3b9e00
[ 68.793233][ T5835] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[ 68.801206][ T5835] RBP: 0000000000000000 R08: ffffffff82170bc3 R09: 1ffffffff2038026
[ 68.809269][ T5835] R10: dffffc0000000000 R11: fffffbfff2038027 R12: ffff888072c31aa0
[ 68.817245][ T5835] R13: dffffc0000000000 R14: ffff888072c31a58 R15: dffffc0000000000
[ 68.825231][ T5835] ? drop_nlink+0x43/0x110
[ 68.829675][ T5835] ? drop_nlink+0xc3/0x110
[ 68.834101][ T5835] ? drop_nlink+0xc3/0x110
[ 68.838521][ T5835] f2fs_drop_nlink+0xd6/0x380
[ 68.843207][ T5835] f2fs_unlink+0x47f/0x960
[ 68.847632][ T5835] ? __pfx_f2fs_unlink+0x10/0x10
[ 68.852573][ T5835] ? bpf_lsm_inode_unlink+0x9/0x10
[ 68.857687][ T5835] ? security_inode_unlink+0xd9/0x340
[ 68.863152][ T5835] vfs_unlink+0x365/0x650
[ 68.867496][ T5835] do_unlinkat+0x4ae/0x830
[ 68.872003][ T5835] ? __pfx_do_unlinkat+0x10/0x10
[ 68.876938][ T5835] ? __might_fault+0xaa/0x120
[ 68.881621][ T5835] ? __might_fault+0xc6/0x120
[ 68.886331][ T5835] ? strncpy_from_user+0x13a/0x260
[ 68.891446][ T5835] ? getname_flags+0x1e3/0x540
[ 68.896389][ T5835] __x64_sys_unlinkat+0xcc/0xf0
[ 68.901240][ T5835] do_syscall_64+0xf3/0x230
[ 68.905743][ T5835] ? clear_bhb_loop+0x35/0x90
[ 68.910513][ T5835] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 68.916421][ T5835] RIP: 0033:0x7f89801d3a59
[ 68.920894][ T5835] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 17 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48
[ 68.940537][ T5835] RSP: 002b:00007ffd8f360738 EFLAGS: 00000246 ORIG_RAX: 0000000000000107
[ 68.948992][ T5835] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f89801d3a59
[ 68.957049][ T5835] RDX: 0000000000000000 RSI: 0000000020000380 RDI: 00000000ffffff9c
[ 68.965015][ T5835] RBP: 00007f89802575f0 R08: 00000000000105b7 R09: 000055557feae4c0
[ 68.973021][ T5835] R10: 00007ffd8f360600 R11: 0000000000000246 R12: 00007ffd8f360760
[ 68.981167][ T5835] R13: 00007ffd8f360988 R14: 431bde82d7b634db R15: 00007f898021c03b
[ 68.989162][ T5835]
[ 68.992487][ T5835] Kernel Offset: disabled
[ 68.996845][ T5835] Rebooting in 86400 seconds..