./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1525341010
<...>
Warning: Permanently added '10.128.1.162' (ED25519) to the list of known hosts.
execve("./syz-executor1525341010", ["./syz-executor1525341010"], 0x7ffebd91a610 /* 10 vars */) = 0
brk(NULL) = 0x555576140000
brk(0x555576140d00) = 0x555576140d00
arch_prctl(ARCH_SET_FS, 0x555576140380) = 0
set_tid_address(0x555576140650) = 5835
set_robust_list(0x555576140660, 24) = 0
rseq(0x555576140ca0, 0x20, 0, 0x53053053) = 0
prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0
readlink("/proc/self/exe", "/root/syz-executor1525341010", 4096) = 28
getrandom("\xf6\xfc\x0c\x46\x82\x26\x09\x2b", 8, GRND_NONBLOCK) = 8
brk(NULL) = 0x555576140d00
brk(0x555576161d00) = 0x555576161d00
brk(0x555576162000) = 0x555576162000
mprotect(0x7f71e4bb8000, 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
write(1, "executing program\n", 18executing program
) = 18
memfd_create("syzkaller", 0) = 3
mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f71dc600000
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
munmap(0x7f71dc600000, 138412032) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
ioctl(4, LOOP_SET_FD, 3) = 0
close(3) = 0
close(4) = 0
mkdir("./file2", 0777) = 0
[ 62.135926][ T5835] loop0: detected capacity change from 0 to 131072
[ 62.184876][ T5835] F2FS-fs (loop0): invalid crc value
mount("/dev/loop0", "./file2", "f2fs", MS_DIRSYNC|MS_RELATIME, "") = 0
openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3
chdir("./file2") = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[ 62.206964][ T5835] F2FS-fs (loop0): Found nat_bits in checkpoint
[ 62.235626][ T5835] F2FS-fs (loop0): Mounted with checkpoint version = 48b305e4
[ 62.300146][ T5835] ------------[ cut here ]------------
[ 62.305786][ T5835] WARNING: CPU: 0 PID: 5835 at fs/inode.c:407 drop_nlink+0xc4/0x110
[ 62.313860][ T5835] Modules linked in:
[ 62.317784][ T5835] CPU: 0 UID: 0 PID: 5835 Comm: syz-executor152 Not tainted 6.12.0-syzkaller-03657-g43fb83c17ba2 #0
[ 62.328588][ T5835] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
[ 62.338692][ T5835] RIP: 0010:drop_nlink+0xc4/0x110
[ 62.343802][ T5835] Code: bb 70 07 00 00 be 08 00 00 00 e8 07 df e5 ff f0 48 ff 83 70 07 00 00 5b 41 5c 41 5e 41 5f 5d c3 cc cc cc cc e8 ed e9 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
[ 62.363541][ T5835] RSP: 0018:ffffc90003cafb98 EFLAGS: 00010293
[ 62.369643][ T5835] RAX: ffffffff82160e93 RBX: 1ffff1100e63e009 RCX: ffff888035573c00
[ 62.377686][ T5835] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[ 62.385716][ T5835] RBP: 0000000000000000 R08: ffffffff82160e13 R09: 1ffffffff203969e
[ 62.393742][ T5835] R10: dffffc0000000000 R11: fffffbfff203969f R12: ffff8880731f0048
[ 62.401733][ T5835] R13: dffffc0000000000 R14: ffff8880731f0000 R15: dffffc0000000000
[ 62.409770][ T5835] FS: 0000555576140380(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
[ 62.418753][ T5835] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 62.425405][ T5835] CR2: 000000000066c7e0 CR3: 00000000758b4000 CR4: 00000000003526f0
[ 62.433437][ T5835] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 62.441407][ T5835] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 62.449416][ T5835] Call Trace:
[ 62.452724][ T5835]
[ 62.455649][ T5835] ? __warn+0x168/0x4e0
[ 62.459791][ T5835] ? drop_nlink+0xc4/0x110
[ 62.464265][ T5835] ? report_bug+0x2b3/0x500
[ 62.468786][ T5835] ? drop_nlink+0xc4/0x110
[ 62.473254][ T5835] ? handle_bug+0x60/0x90
[ 62.477591][ T5835] ? exc_invalid_op+0x1a/0x50
[ 62.482255][ T5835] ? asm_exc_invalid_op+0x1a/0x20
[ 62.487332][ T5835] ? drop_nlink+0x43/0x110
[ 62.491759][ T5835] ? drop_nlink+0xc3/0x110
[ 62.496210][ T5835] ? drop_nlink+0xc4/0x110
[ 62.500657][ T5835] ? drop_nlink+0xc3/0x110
[ 62.505141][ T5835] f2fs_drop_nlink+0xd6/0x380
[ 62.509877][ T5835] f2fs_unlink+0x47f/0x960
[ 62.514371][ T5835] ? __pfx_f2fs_unlink+0x10/0x10
[ 62.519338][ T5835] ? bpf_lsm_inode_unlink+0x9/0x10
[ 62.524511][ T5835] ? security_inode_unlink+0xd9/0x340
[ 62.529902][ T5835] vfs_unlink+0x365/0x650
[ 62.534281][ T5835] do_unlinkat+0x4ae/0x830
[ 62.538712][ T5835] ? __pfx_do_unlinkat+0x10/0x10
[ 62.543694][ T5835] ? __might_fault+0xaa/0x120
[ 62.548387][ T5835] ? __might_fault+0xc6/0x120
[ 62.553118][ T5835] ? strncpy_from_user+0x13a/0x260
[ 62.558241][ T5835] ? getname_flags+0x1e3/0x540
[ 62.563043][ T5835] __x64_sys_unlinkat+0xcc/0xf0
[ 62.567912][ T5835] do_syscall_64+0xf3/0x230
[ 62.572405][ T5835] ? clear_bhb_loop+0x35/0x90
[ 62.577134][ T5835] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 62.583061][ T5835] RIP: 0033:0x7f71e4b355f9
[ 62.587491][ T5835] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 61 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
[ 62.607146][ T5835] RSP: 002b:00007ffed28a90b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000107
[ 62.615618][ T5835] RAX: ffffffffffffffda RBX: 00007ffed28a9298 RCX: 00007f71e4b355f9
[ 62.623618][ T5835] RDX: 0000000000000000 RSI: 0000000020000380 RDI: 00000000ffffff9c
[ 62.631576][ T5835] RBP: 00007f71e4bb8610 R08: 00000000000105b7 R09: 0000000000000000
[ 62.639608][ T5835] R10: 00007ffed28a8f80 R11: 0000000000000246 R12: 0000000000000001
[ 62.647623][ T5835] R13: 00007ffed28a9288 R14: 0000000000000001 R15: 0000000000000001
[ 62.655659][ T5835]
[ 62.658694][ T5835] Kernel panic - not syncing: kernel: panic_on_warn set ...
[ 62.665966][ T5835] CPU: 0 UID: 0 PID: 5835 Comm: syz-executor152 Not tainted 6.12.0-syzkaller-03657-g43fb83c17ba2 #0
[ 62.676717][ T5835] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
[ 62.686761][ T5835] Call Trace:
[ 62.690036][ T5835]
[ 62.692959][ T5835] dump_stack_lvl+0x241/0x360
[ 62.697640][ T5835] ? __pfx_dump_stack_lvl+0x10/0x10
[ 62.702834][ T5835] ? __pfx__printk+0x10/0x10
[ 62.707423][ T5835] ? _printk+0xd5/0x120
[ 62.711573][ T5835] ? __init_begin+0x41000/0x41000
[ 62.716597][ T5835] ? vscnprintf+0x5d/0x90
[ 62.720920][ T5835] panic+0x349/0x880
[ 62.724836][ T5835] ? __warn+0x177/0x4e0
[ 62.728986][ T5835] ? __pfx_panic+0x10/0x10
[ 62.733395][ T5835] ? show_trace_log_lvl+0x3b2/0x410
[ 62.738604][ T5835] __warn+0x34b/0x4e0
[ 62.742604][ T5835] ? drop_nlink+0xc4/0x110
[ 62.747018][ T5835] report_bug+0x2b3/0x500
[ 62.751343][ T5835] ? drop_nlink+0xc4/0x110
[ 62.755754][ T5835] handle_bug+0x60/0x90
[ 62.759902][ T5835] exc_invalid_op+0x1a/0x50
[ 62.764397][ T5835] asm_exc_invalid_op+0x1a/0x20
[ 62.769245][ T5835] RIP: 0010:drop_nlink+0xc4/0x110
[ 62.774264][ T5835] Code: bb 70 07 00 00 be 08 00 00 00 e8 07 df e5 ff f0 48 ff 83 70 07 00 00 5b 41 5c 41 5e 41 5f 5d c3 cc cc cc cc e8 ed e9 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
[ 62.793865][ T5835] RSP: 0018:ffffc90003cafb98 EFLAGS: 00010293
[ 62.799930][ T5835] RAX: ffffffff82160e93 RBX: 1ffff1100e63e009 RCX: ffff888035573c00
[ 62.807895][ T5835] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[ 62.815867][ T5835] RBP: 0000000000000000 R08: ffffffff82160e13 R09: 1ffffffff203969e
[ 62.823830][ T5835] R10: dffffc0000000000 R11: fffffbfff203969f R12: ffff8880731f0048
[ 62.831792][ T5835] R13: dffffc0000000000 R14: ffff8880731f0000 R15: dffffc0000000000
[ 62.839761][ T5835] ? drop_nlink+0x43/0x110
[ 62.844176][ T5835] ? drop_nlink+0xc3/0x110
[ 62.848593][ T5835] ? drop_nlink+0xc3/0x110
[ 62.853004][ T5835] f2fs_drop_nlink+0xd6/0x380
[ 62.857679][ T5835] f2fs_unlink+0x47f/0x960
[ 62.862092][ T5835] ? __pfx_f2fs_unlink+0x10/0x10
[ 62.867029][ T5835] ? bpf_lsm_inode_unlink+0x9/0x10
[ 62.872158][ T5835] ? security_inode_unlink+0xd9/0x340
[ 62.877529][ T5835] vfs_unlink+0x365/0x650
[ 62.881857][ T5835] do_unlinkat+0x4ae/0x830
[ 62.886272][ T5835] ? __pfx_do_unlinkat+0x10/0x10
[ 62.891198][ T5835] ? __might_fault+0xaa/0x120
[ 62.895874][ T5835] ? __might_fault+0xc6/0x120
[ 62.900550][ T5835] ? strncpy_from_user+0x13a/0x260
[ 62.905658][ T5835] ? getname_flags+0x1e3/0x540
[ 62.910431][ T5835] __x64_sys_unlinkat+0xcc/0xf0
[ 62.915280][ T5835] do_syscall_64+0xf3/0x230
[ 62.919784][ T5835] ? clear_bhb_loop+0x35/0x90
[ 62.924461][ T5835] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 62.930351][ T5835] RIP: 0033:0x7f71e4b355f9
[ 62.934758][ T5835] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 61 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
[ 62.954352][ T5835] RSP: 002b:00007ffed28a90b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000107
[ 62.962761][ T5835] RAX: ffffffffffffffda RBX: 00007ffed28a9298 RCX: 00007f71e4b355f9
[ 62.970725][ T5835] RDX: 0000000000000000 RSI: 0000000020000380 RDI: 00000000ffffff9c
[ 62.978691][ T5835] RBP: 00007f71e4bb8610 R08: 00000000000105b7 R09: 0000000000000000
[ 62.986655][ T5835] R10: 00007ffed28a8f80 R11: 0000000000000246 R12: 0000000000000001
[ 62.994617][ T5835] R13: 00007ffed28a9288 R14: 0000000000000001 R15: 0000000000000001
[ 63.002595][ T5835]
[ 63.005840][ T5835] Kernel Offset: disabled
[ 63.010192][ T5835] Rebooting in 86400 seconds..