./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor4277956674
<...>
Warning: Permanently added '10.128.1.174' (ED25519) to the list of known hosts.
execve("./syz-executor4277956674", ["./syz-executor4277956674"], 0x7ffc0d633eb0 /* 10 vars */) = 0
brk(NULL) = 0x55558c7f3000
brk(0x55558c7f3d00) = 0x55558c7f3d00
arch_prctl(ARCH_SET_FS, 0x55558c7f3380) = 0
set_tid_address(0x55558c7f3650) = 5815
set_robust_list(0x55558c7f3660, 24) = 0
rseq(0x55558c7f3ca0, 0x20, 0, 0x53053053) = 0
prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0
readlink("/proc/self/exe", "/root/syz-executor4277956674", 4096) = 28
getrandom("\x47\xd3\x32\x39\xb4\x33\x23\x11", 8, GRND_NONBLOCK) = 8
brk(NULL) = 0x55558c7f3d00
brk(0x55558c814d00) = 0x55558c814d00
brk(0x55558c815000) = 0x55558c815000
mprotect(0x7fa25284d000, 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) = 0x7fa24a200000
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(0x7fa24a200000, 138412032) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
ioctl(4, LOOP_SET_FD, 3) = 0
close(3) = 0
close(4) = 0
mkdir("./file1", 0777) = 0
mount("/dev/loop0", "./file1", "hfsplus", 0, "") = 0
[ 73.812647][ T5815] loop0: detected capacity change from 0 to 1024
openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3
chdir("./file1") = 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)
[ 73.955172][ T5815] ------------[ cut here ]------------
[ 73.960776][ T5815] WARNING: CPU: 1 PID: 5815 at fs/inode.c:417 drop_nlink+0xc5/0x110
[ 73.968899][ T5815] Modules linked in:
[ 73.972925][ T5815] CPU: 1 UID: 0 PID: 5815 Comm: syz-executor427 Not tainted 6.15.0-rc4-syzkaller #0 PREEMPT(full)
[ 73.983682][ T5815] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025
[ 73.993787][ T5815] RIP: 0010:drop_nlink+0xc5/0x110
[ 73.998891][ T5815] 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
[ 74.018596][ T5815] RSP: 0018:ffffc90003f27bd0 EFLAGS: 00010293
[ 74.024727][ T5815] RAX: ffffffff82370b44 RBX: ffff888078e295f0 RCX: ffff88807babda00
[ 74.032752][ T5815] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[ 74.040974][ T5815] RBP: 0000000000000000 R08: ffffc90003f27727 R09: 1ffff920007e4ee4
[ 74.049051][ T5815] R10: dffffc0000000000 R11: fffff520007e4ee5 R12: 1ffff1100f1c52c7
[ 74.057047][ T5815] R13: ffff88807a7721d0 R14: ffff888078e29638 R15: dffffc0000000000
[ 74.065063][ T5815] FS: 000055558c7f3380(0000) GS:ffff888126202000(0000) knlGS:0000000000000000
[ 74.074053][ T5815] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 74.080678][ T5815] CR2: 000000000066c7e0 CR3: 000000002fae8000 CR4: 00000000003526f0
[ 74.088683][ T5815] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 74.096644][ T5815] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 74.104690][ T5815] Call Trace:
[ 74.107978][ T5815]
[ 74.110965][ T5815] hfsplus_unlink+0x3e8/0x730
[ 74.115669][ T5815] ? __pfx_hfsplus_unlink+0x10/0x10
[ 74.120939][ T5815] ? __pfx_down_write+0x10/0x10
[ 74.125834][ T5815] ? bpf_lsm_inode_unlink+0x9/0x20
[ 74.130994][ T5815] vfs_unlink+0x391/0x650
[ 74.135358][ T5815] do_unlinkat+0x350/0x560
[ 74.139841][ T5815] ? __pfx_do_unlinkat+0x10/0x10
[ 74.144838][ T5815] ? strncpy_from_user+0x150/0x290
[ 74.150021][ T5815] ? getname_flags+0x1e5/0x540
[ 74.154810][ T5815] __x64_sys_unlinkat+0xd3/0xf0
[ 74.159726][ T5815] do_syscall_64+0xf6/0x210
[ 74.164250][ T5815] ? clear_bhb_loop+0x45/0xa0
[ 74.168999][ T5815] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 74.174913][ T5815] RIP: 0033:0x7fa2527d9739
[ 74.179440][ T5815] 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
[ 74.199119][ T5815] RSP: 002b:00007ffe3e8478b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000107
[ 74.207587][ T5815] RAX: ffffffffffffffda RBX: 0000200000000100 RCX: 00007fa2527d9739
[ 74.215609][ T5815] RDX: 0000000000000000 RSI: 0000200000000380 RDI: 00000000ffffff9c
[ 74.223645][ T5815] RBP: 0031656c69662f2e R08: 0000000000000000 R09: 0000000000000000
[ 74.231665][ T5815] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000000000
[ 74.239681][ T5815] R13: 00007ffe3e847a98 R14: 0000000000000001 R15: 0000000000000001
[ 74.247665][ T5815]
[ 74.250737][ T5815] Kernel panic - not syncing: kernel: panic_on_warn set ...
[ 74.258039][ T5815] CPU: 1 UID: 0 PID: 5815 Comm: syz-executor427 Not tainted 6.15.0-rc4-syzkaller #0 PREEMPT(full)
[ 74.268711][ T5815] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025
[ 74.278786][ T5815] Call Trace:
[ 74.282067][ T5815]
[ 74.285001][ T5815] dump_stack_lvl+0x99/0x250
[ 74.289595][ T5815] ? __asan_memcpy+0x40/0x70
[ 74.294187][ T5815] ? __pfx_dump_stack_lvl+0x10/0x10
[ 74.299387][ T5815] ? __pfx__printk+0x10/0x10
[ 74.303992][ T5815] panic+0x2db/0x790
[ 74.307883][ T5815] ? __pfx_panic+0x10/0x10
[ 74.312311][ T5815] __warn+0x31b/0x4b0
[ 74.316294][ T5815] ? drop_nlink+0xc5/0x110
[ 74.320722][ T5815] ? drop_nlink+0xc5/0x110
[ 74.325153][ T5815] report_bug+0x2be/0x4f0
[ 74.329488][ T5815] ? drop_nlink+0xc5/0x110
[ 74.333919][ T5815] ? drop_nlink+0xc5/0x110
[ 74.338340][ T5815] ? drop_nlink+0xc7/0x110
[ 74.342756][ T5815] handle_bug+0x84/0x160
[ 74.347004][ T5815] exc_invalid_op+0x1a/0x50
[ 74.351506][ T5815] asm_exc_invalid_op+0x1a/0x20
[ 74.356354][ T5815] RIP: 0010:drop_nlink+0xc5/0x110
[ 74.361382][ T5815] 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
[ 74.380992][ T5815] RSP: 0018:ffffc90003f27bd0 EFLAGS: 00010293
[ 74.387067][ T5815] RAX: ffffffff82370b44 RBX: ffff888078e295f0 RCX: ffff88807babda00
[ 74.395038][ T5815] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[ 74.403024][ T5815] RBP: 0000000000000000 R08: ffffc90003f27727 R09: 1ffff920007e4ee4
[ 74.411014][ T5815] R10: dffffc0000000000 R11: fffff520007e4ee5 R12: 1ffff1100f1c52c7
[ 74.418987][ T5815] R13: ffff88807a7721d0 R14: ffff888078e29638 R15: dffffc0000000000
[ 74.426971][ T5815] ? drop_nlink+0xc4/0x110
[ 74.431398][ T5815] hfsplus_unlink+0x3e8/0x730
[ 74.436079][ T5815] ? __pfx_hfsplus_unlink+0x10/0x10
[ 74.441286][ T5815] ? __pfx_down_write+0x10/0x10
[ 74.446144][ T5815] ? bpf_lsm_inode_unlink+0x9/0x20
[ 74.451259][ T5815] vfs_unlink+0x391/0x650
[ 74.455595][ T5815] do_unlinkat+0x350/0x560
[ 74.460041][ T5815] ? __pfx_do_unlinkat+0x10/0x10
[ 74.465006][ T5815] ? strncpy_from_user+0x150/0x290
[ 74.470150][ T5815] ? getname_flags+0x1e5/0x540
[ 74.474948][ T5815] __x64_sys_unlinkat+0xd3/0xf0
[ 74.479827][ T5815] do_syscall_64+0xf6/0x210
[ 74.484352][ T5815] ? clear_bhb_loop+0x45/0xa0
[ 74.489050][ T5815] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 74.494951][ T5815] RIP: 0033:0x7fa2527d9739
[ 74.499372][ T5815] 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
[ 74.518992][ T5815] RSP: 002b:00007ffe3e8478b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000107
[ 74.527420][ T5815] RAX: ffffffffffffffda RBX: 0000200000000100 RCX: 00007fa2527d9739
[ 74.535400][ T5815] RDX: 0000000000000000 RSI: 0000200000000380 RDI: 00000000ffffff9c
[ 74.543375][ T5815] RBP: 0031656c69662f2e R08: 0000000000000000 R09: 0000000000000000
[ 74.551352][ T5815] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000000000
[ 74.559329][ T5815] R13: 00007ffe3e847a98 R14: 0000000000000001 R15: 0000000000000001
[ 74.567321][ T5815]
[ 74.570650][ T5815] Kernel Offset: disabled
[ 74.575009][ T5815] Rebooting in 86400 seconds..