./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor998670734
<...>
Warning: Permanently added '10.128.1.59' (ED25519) to the list of known hosts.
execve("./syz-executor998670734", ["./syz-executor998670734"], 0x7fff37d90d10 /* 10 vars */) = 0
brk(NULL) = 0x55557f942000
brk(0x55557f942d00) = 0x55557f942d00
arch_prctl(ARCH_SET_FS, 0x55557f942380) = 0
set_tid_address(0x55557f942650) = 5818
set_robust_list(0x55557f942660, 24) = 0
rseq(0x55557f942ca0, 0x20, 0, 0x53053053) = 0
prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0
readlink("/proc/self/exe", "/root/syz-executor998670734", 4096) = 27
getrandom("\x9b\x91\xcd\x6d\xe4\x34\xde\xa2", 8, GRND_NONBLOCK) = 8
brk(NULL) = 0x55557f942d00
brk(0x55557f963d00) = 0x55557f963d00
brk(0x55557f964000) = 0x55557f964000
mprotect(0x7f22700ab000, 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
executing program
write(1, "executing program\n", 18) = 18
memfd_create("syzkaller", 0) = 3
mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2267a00000
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"..., 524288) = 524288
munmap(0x7f2267a00000, 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
[ 85.845559][ T5818] loop0: detected capacity change from 0 to 1024
mount("/dev/loop0", "./file2", "hfsplus", MS_NOSUID|MS_NOEXEC|MS_DIRSYNC|MS_REC|MS_I_VERSION, "") = 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)
openat(AT_FDCWD, "./file1", O_RDONLY|O_NOCTTY|O_TRUNC) = 4
symlink("\x13\x13\x77\xc5\xfc\x35\xd4\x14\x54\xd5\xd4\x1d\x29\xad\x1a\x60\x29\x59\x81\x46\xe6\xbe\x16\x6e\x41\xad\x0d\xbd\x40\x54\x03\x3c\x9f\x33\xbb\xda\x82\x24\xa2\xf3\xd7\x72\xe7\x63\x6e\x48\xb3\x3c\xbf\x70\x83\x72\xe8\xf1\xb9\x93\x3e\xc5\x12\x77\x43\xbe\x22\x06\x20\x9e\xf0\x2d\xf9\xcb\xf2\xf6\xe8\x80\xd3\x38\x2f\x2f\x66\x69\x6c\x65\x30", "\x2e\x02") = 0
rename("\x2e\x02", "./file1") = -1 ENOENT (No such file or directory)
[ 85.991289][ T5818] ------------[ cut here ]------------
[ 85.996929][ T5818] WARNING: CPU: 1 PID: 5818 at fs/inode.c:417 drop_nlink+0xc5/0x110
[ 86.004959][ T5818] Modules linked in:
[ 86.008987][ T5818] CPU: 1 UID: 0 PID: 5818 Comm: syz-executor998 Not tainted 6.15.0-rc4-syzkaller #0 PREEMPT(full)
[ 86.019801][ T5818] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025
[ 86.029949][ T5818] RIP: 0010:drop_nlink+0xc5/0x110
[ 86.035011][ T5818] Code: 70 07 00 00 be 08 00 00 00 e8 b7 84 e8 ff f0 48 ff 83 70 07 00 00 5b 41 5c 41 5e 41 5f 5d c3 cc cc cc cc cc e8 9c b2 88 ff 90 <0f> 0b 90 eb 81 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c 5b ff ff ff
[ 86.054698][ T5818] RSP: 0018:ffffc9000405fbd0 EFLAGS: 00010293
[ 86.060853][ T5818] RAX: ffffffff82370b44 RBX: ffff88807c482a30 RCX: ffff8880213ada00
[ 86.069088][ T5818] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[ 86.077141][ T5818] RBP: 0000000000000000 R08: ffffc9000405f727 R09: 1ffff9200080bee4
[ 86.085151][ T5818] R10: dffffc0000000000 R11: fffff5200080bee5 R12: 1ffff1100f89054f
[ 86.093173][ T5818] R13: ffff88807a85c638 R14: ffff88807c482a78 R15: dffffc0000000000
[ 86.101260][ T5818] FS: 000055557f942380(0000) GS:ffff888126202000(0000) knlGS:0000000000000000
[ 86.110269][ T5818] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 86.116937][ T5818] CR2: 00005594f2bc6e68 CR3: 000000002a354000 CR4: 00000000003526f0
[ 86.124946][ T5818] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 86.133009][ T5818] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 86.141040][ T5818] Call Trace:
[ 86.144347][ T5818]
[ 86.147348][ T5818] hfsplus_unlink+0x3e8/0x730
[ 86.152068][ T5818] ? security_inode_permission+0x104/0x310
[ 86.157939][ T5818] ? __pfx_hfsplus_unlink+0x10/0x10
[ 86.163172][ T5818] ? __pfx_down_write+0x10/0x10
[ 86.168105][ T5818] ? bpf_lsm_inode_unlink+0x9/0x20
[ 86.173242][ T5818] vfs_unlink+0x391/0x650
[ 86.177655][ T5818] do_unlinkat+0x350/0x560
[ 86.182193][ T5818] ? __pfx_do_unlinkat+0x10/0x10
[ 86.187193][ T5818] ? strncpy_from_user+0x150/0x290
[ 86.192342][ T5818] ? getname_flags+0x1e5/0x540
[ 86.197160][ T5818] __x64_sys_unlinkat+0xd3/0xf0
[ 86.202041][ T5818] do_syscall_64+0xf6/0x210
[ 86.206607][ T5818] ? clear_bhb_loop+0x45/0xa0
[ 86.211315][ T5818] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 86.217294][ T5818] RIP: 0033:0x7f22700376f9
[ 86.221758][ T5818] 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
[ 86.241455][ T5818] RSP: 002b:00007ffc27ddfd68 EFLAGS: 00000246 ORIG_RAX: 0000000000000107
[ 86.249943][ T5818] RAX: ffffffffffffffda RBX: 0031656c69662f2e RCX: 00007f22700376f9
[ 86.258016][ T5818] RDX: 0000000000000000 RSI: 0000200000000380 RDI: 00000000ffffff9c
[ 86.266064][ T5818] RBP: 0000200000000000 R08: 0000000000000000 R09: 0000000000000000
[ 86.274068][ T5818] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
[ 86.282123][ T5818] R13: 00007ffc27ddff48 R14: 0000000000000001 R15: 0000000000000001
[ 86.290160][ T5818]
[ 86.293190][ T5818] Kernel panic - not syncing: kernel: panic_on_warn set ...
[ 86.300495][ T5818] CPU: 1 UID: 0 PID: 5818 Comm: syz-executor998 Not tainted 6.15.0-rc4-syzkaller #0 PREEMPT(full)
[ 86.311254][ T5818] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025
[ 86.321309][ T5818] Call Trace:
[ 86.324594][ T5818]
[ 86.327521][ T5818] dump_stack_lvl+0x99/0x250
[ 86.332146][ T5818] ? __asan_memcpy+0x40/0x70
[ 86.336743][ T5818] ? __pfx_dump_stack_lvl+0x10/0x10
[ 86.342120][ T5818] ? __pfx__printk+0x10/0x10
[ 86.346739][ T5818] panic+0x2db/0x790
[ 86.350663][ T5818] ? __pfx_panic+0x10/0x10
[ 86.355104][ T5818] __warn+0x31b/0x4b0
[ 86.359090][ T5818] ? drop_nlink+0xc5/0x110
[ 86.363534][ T5818] ? drop_nlink+0xc5/0x110
[ 86.367952][ T5818] report_bug+0x2be/0x4f0
[ 86.372284][ T5818] ? drop_nlink+0xc5/0x110
[ 86.376699][ T5818] ? drop_nlink+0xc5/0x110
[ 86.381113][ T5818] ? drop_nlink+0xc7/0x110
[ 86.385528][ T5818] handle_bug+0x84/0x160
[ 86.389769][ T5818] exc_invalid_op+0x1a/0x50
[ 86.394287][ T5818] asm_exc_invalid_op+0x1a/0x20
[ 86.399132][ T5818] RIP: 0010:drop_nlink+0xc5/0x110
[ 86.404156][ T5818] Code: 70 07 00 00 be 08 00 00 00 e8 b7 84 e8 ff f0 48 ff 83 70 07 00 00 5b 41 5c 41 5e 41 5f 5d c3 cc cc cc cc cc e8 9c b2 88 ff 90 <0f> 0b 90 eb 81 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c 5b ff ff ff
[ 86.423756][ T5818] RSP: 0018:ffffc9000405fbd0 EFLAGS: 00010293
[ 86.429823][ T5818] RAX: ffffffff82370b44 RBX: ffff88807c482a30 RCX: ffff8880213ada00
[ 86.437794][ T5818] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[ 86.445757][ T5818] RBP: 0000000000000000 R08: ffffc9000405f727 R09: 1ffff9200080bee4
[ 86.453727][ T5818] R10: dffffc0000000000 R11: fffff5200080bee5 R12: 1ffff1100f89054f
[ 86.461703][ T5818] R13: ffff88807a85c638 R14: ffff88807c482a78 R15: dffffc0000000000
[ 86.469678][ T5818] ? drop_nlink+0xc4/0x110
[ 86.474104][ T5818] hfsplus_unlink+0x3e8/0x730
[ 86.478787][ T5818] ? security_inode_permission+0x104/0x310
[ 86.484597][ T5818] ? __pfx_hfsplus_unlink+0x10/0x10
[ 86.489800][ T5818] ? __pfx_down_write+0x10/0x10
[ 86.494656][ T5818] ? bpf_lsm_inode_unlink+0x9/0x20
[ 86.499767][ T5818] vfs_unlink+0x391/0x650
[ 86.504112][ T5818] do_unlinkat+0x350/0x560
[ 86.508532][ T5818] ? __pfx_do_unlinkat+0x10/0x10
[ 86.513472][ T5818] ? strncpy_from_user+0x150/0x290
[ 86.518591][ T5818] ? getname_flags+0x1e5/0x540
[ 86.523355][ T5818] __x64_sys_unlinkat+0xd3/0xf0
[ 86.528208][ T5818] do_syscall_64+0xf6/0x210
[ 86.532708][ T5818] ? clear_bhb_loop+0x45/0xa0
[ 86.537385][ T5818] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 86.543274][ T5818] RIP: 0033:0x7f22700376f9
[ 86.547697][ T5818] 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
[ 86.567323][ T5818] RSP: 002b:00007ffc27ddfd68 EFLAGS: 00000246 ORIG_RAX: 0000000000000107
[ 86.575746][ T5818] RAX: ffffffffffffffda RBX: 0031656c69662f2e RCX: 00007f22700376f9
[ 86.583747][ T5818] RDX: 0000000000000000 RSI: 0000200000000380 RDI: 00000000ffffff9c
[ 86.591749][ T5818] RBP: 0000200000000000 R08: 0000000000000000 R09: 0000000000000000
[ 86.599741][ T5818] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
[ 86.607712][ T5818] R13: 00007ffc27ddff48 R14: 0000000000000001 R15: 0000000000000001
[ 86.615691][ T5818]
[ 86.618916][ T5818] Kernel Offset: disabled
[ 86.623250][ T5818] Rebooting in 86400 seconds..