./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor680444737
<...>
Warning: Permanently added '10.128.0.16' (ED25519) to the list of known hosts.
execve("./syz-executor680444737", ["./syz-executor680444737"], 0x7ffde9d2a7f0 /* 10 vars */) = 0
brk(NULL) = 0x55557e672000
brk(0x55557e672d00) = 0x55557e672d00
arch_prctl(ARCH_SET_FS, 0x55557e672380) = 0
set_tid_address(0x55557e672650) = 5813
set_robust_list(0x55557e672660, 24) = 0
rseq(0x55557e672ca0, 0x20, 0, 0x53053053) = 0
prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0
readlink("/proc/self/exe", "/root/syz-executor680444737", 4096) = 27
getrandom("\x98\x24\x7a\xe9\xfd\x84\x10\xbb", 8, GRND_NONBLOCK) = 8
brk(NULL) = 0x55557e672d00
brk(0x55557e693d00) = 0x55557e693d00
brk(0x55557e694000) = 0x55557e694000
mprotect(0x7f83ea69a000, 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
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) = 0x7f83e2000000
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"..., 16777216) = 16777216
munmap(0x7f83e2000000, 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", "jfs", MS_NOSUID|MS_NODEV|MS_POSIXACL|MS_STRICTATIME, "") = 0
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)
syzkaller login: [ 71.432749][ T5813] loop0: detected capacity change from 0 to 32768
[ 71.496702][ T5813] ------------[ cut here ]------------
[ 71.502217][ T5813] WARNING: CPU: 1 PID: 5813 at fs/inode.c:417 drop_nlink+0xc5/0x110
[ 71.510525][ T5813] Modules linked in:
[ 71.514498][ T5813] CPU: 1 UID: 0 PID: 5813 Comm: syz-executor680 Not tainted 6.15.0-rc4-syzkaller-00319-g14c55b7bb0a8 #0 PREEMPT(full)
[ 71.527385][ T5813] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/29/2025
[ 71.537561][ T5813] RIP: 0010:drop_nlink+0xc5/0x110
[ 71.542632][ T5813] 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 0c b3 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
[ 71.562332][ T5813] RSP: 0018:ffffc90003eef8b0 EFLAGS: 00010293
[ 71.568457][ T5813] RAX: ffffffff82371c54 RBX: ffff8880772a2910 RCX: ffff88806dd43c00
[ 71.576468][ T5813] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[ 71.584445][ T5813] RBP: 0000000000000000 R08: ffffea000046b677 R09: 1ffffd400008d6ce
[ 71.592474][ T5813] R10: dffffc0000000000 R11: fffff9400008d6cf R12: 1ffff1100ee5452b
[ 71.600560][ T5813] R13: 1ffff920007ddf28 R14: ffff8880772a2958 R15: dffffc0000000000
[ 71.608556][ T5813] FS: 000055557e672380(0000) GS:ffff8881261fd000(0000) knlGS:0000000000000000
[ 71.617527][ T5813] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 71.624097][ T5813] CR2: 000000000066c7e0 CR3: 000000007c658000 CR4: 00000000003526f0
[ 71.632100][ T5813] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 71.640094][ T5813] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 71.648095][ T5813] Call Trace:
[ 71.651371][ T5813]
[ 71.654298][ T5813] jfs_rename+0xbb3/0x1610
[ 71.658767][ T5813] ? __pfx_jfs_rename+0x10/0x10
[ 71.663638][ T5813] ? __lock_acquire+0xaac/0xd20
[ 71.668528][ T5813] ? do_raw_spin_lock+0x121/0x290
[ 71.673562][ T5813] ? do_raw_spin_unlock+0x122/0x240
[ 71.678791][ T5813] ? __pfx_jfs_rename+0x10/0x10
[ 71.683648][ T5813] vfs_rename+0xb99/0xec0
[ 71.688031][ T5813] ? __pfx_vfs_rename+0x10/0x10
[ 71.692886][ T5813] ? d_alloc+0x144/0x190
[ 71.697168][ T5813] ? bpf_lsm_path_rename+0x9/0x20
[ 71.702190][ T5813] ? security_path_rename+0x17d/0x490
[ 71.707626][ T5813] do_renameat2+0x878/0xc50
[ 71.712160][ T5813] ? __pfx_do_renameat2+0x10/0x10
[ 71.717274][ T5813] ? getname_flags+0x1e5/0x540
[ 71.722052][ T5813] __x64_sys_rename+0x82/0x90
[ 71.726781][ T5813] do_syscall_64+0xf6/0x210
[ 71.731303][ T5813] ? clear_bhb_loop+0x45/0xa0
[ 71.736018][ T5813] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 71.741915][ T5813] RIP: 0033:0x7f83ea621639
[ 71.746385][ T5813] 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
[ 71.766049][ T5813] RSP: 002b:00007ffd978759f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000052
[ 71.774447][ T5813] RAX: ffffffffffffffda RBX: 00007ffd97875bd8 RCX: 00007f83ea621639
[ 71.782442][ T5813] RDX: 0000000000000000 RSI: 0000200000000780 RDI: 00002000000003c0
[ 71.790442][ T5813] RBP: 00007f83ea69a610 R08: 0000000000006221 R09: 0000000000000000
[ 71.798462][ T5813] R10: 00007ffd978758c0 R11: 0000000000000246 R12: 0000000000000001
[ 71.806475][ T5813] R13: 00007ffd97875bc8 R14: 0000000000000001 R15: 0000000000000001
[ 71.814441][ T5813]
[ 71.817498][ T5813] Kernel panic - not syncing: kernel: panic_on_warn set ...
[ 71.824777][ T5813] CPU: 1 UID: 0 PID: 5813 Comm: syz-executor680 Not tainted 6.15.0-rc4-syzkaller-00319-g14c55b7bb0a8 #0 PREEMPT(full)
[ 71.837165][ T5813] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/29/2025
[ 71.847203][ T5813] Call Trace:
[ 71.850466][ T5813]
[ 71.853378][ T5813] dump_stack_lvl+0x99/0x250
[ 71.857952][ T5813] ? __asan_memcpy+0x40/0x70
[ 71.862522][ T5813] ? __pfx_dump_stack_lvl+0x10/0x10
[ 71.867698][ T5813] ? __pfx__printk+0x10/0x10
[ 71.872275][ T5813] panic+0x2db/0x790
[ 71.876163][ T5813] ? __pfx_panic+0x10/0x10
[ 71.880587][ T5813] __warn+0x31b/0x4b0
[ 71.884558][ T5813] ? drop_nlink+0xc5/0x110
[ 71.888968][ T5813] ? drop_nlink+0xc5/0x110
[ 71.893378][ T5813] report_bug+0x2be/0x4f0
[ 71.897699][ T5813] ? drop_nlink+0xc5/0x110
[ 71.902106][ T5813] ? drop_nlink+0xc5/0x110
[ 71.906516][ T5813] ? drop_nlink+0xc7/0x110
[ 71.910927][ T5813] handle_bug+0x84/0x160
[ 71.915166][ T5813] exc_invalid_op+0x1a/0x50
[ 71.919659][ T5813] asm_exc_invalid_op+0x1a/0x20
[ 71.924522][ T5813] RIP: 0010:drop_nlink+0xc5/0x110
[ 71.929552][ T5813] 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 0c b3 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
[ 71.949156][ T5813] RSP: 0018:ffffc90003eef8b0 EFLAGS: 00010293
[ 71.955238][ T5813] RAX: ffffffff82371c54 RBX: ffff8880772a2910 RCX: ffff88806dd43c00
[ 71.963227][ T5813] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[ 71.971203][ T5813] RBP: 0000000000000000 R08: ffffea000046b677 R09: 1ffffd400008d6ce
[ 71.979607][ T5813] R10: dffffc0000000000 R11: fffff9400008d6cf R12: 1ffff1100ee5452b
[ 71.987584][ T5813] R13: 1ffff920007ddf28 R14: ffff8880772a2958 R15: dffffc0000000000
[ 71.995571][ T5813] ? drop_nlink+0xc4/0x110
[ 71.999997][ T5813] jfs_rename+0xbb3/0x1610
[ 72.004431][ T5813] ? __pfx_jfs_rename+0x10/0x10
[ 72.009294][ T5813] ? __lock_acquire+0xaac/0xd20
[ 72.014142][ T5813] ? do_raw_spin_lock+0x121/0x290
[ 72.019168][ T5813] ? do_raw_spin_unlock+0x122/0x240
[ 72.024357][ T5813] ? __pfx_jfs_rename+0x10/0x10
[ 72.029200][ T5813] vfs_rename+0xb99/0xec0
[ 72.033534][ T5813] ? __pfx_vfs_rename+0x10/0x10
[ 72.038382][ T5813] ? d_alloc+0x144/0x190
[ 72.042633][ T5813] ? bpf_lsm_path_rename+0x9/0x20
[ 72.047651][ T5813] ? security_path_rename+0x17d/0x490
[ 72.053041][ T5813] do_renameat2+0x878/0xc50
[ 72.057566][ T5813] ? __pfx_do_renameat2+0x10/0x10
[ 72.062600][ T5813] ? getname_flags+0x1e5/0x540
[ 72.067357][ T5813] __x64_sys_rename+0x82/0x90
[ 72.072031][ T5813] do_syscall_64+0xf6/0x210
[ 72.076528][ T5813] ? clear_bhb_loop+0x45/0xa0
[ 72.081196][ T5813] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 72.087079][ T5813] RIP: 0033:0x7f83ea621639
[ 72.091484][ T5813] 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
[ 72.111077][ T5813] RSP: 002b:00007ffd978759f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000052
[ 72.119483][ T5813] RAX: ffffffffffffffda RBX: 00007ffd97875bd8 RCX: 00007f83ea621639
[ 72.127464][ T5813] RDX: 0000000000000000 RSI: 0000200000000780 RDI: 00002000000003c0
[ 72.135433][ T5813] RBP: 00007f83ea69a610 R08: 0000000000006221 R09: 0000000000000000
[ 72.143432][ T5813] R10: 00007ffd978758c0 R11: 0000000000000246 R12: 0000000000000001
[ 72.151401][ T5813] R13: 00007ffd97875bc8 R14: 0000000000000001 R15: 0000000000000001
[ 72.159466][ T5813]
[ 72.162721][ T5813] Kernel Offset: disabled
[ 72.167036][ T5813] Rebooting in 86400 seconds..