ERROR: (device loop1): remounting filesystem as read-only
jfs_dirty_inode called on read-only volume
Is remount racy?
find_entry called with index = 0
find_entry called with index = 0
find_entry called with index = 0
find_entry called with index = 0
jfs_dirty_inode called on read-only volume
Is remount racy?
jfs_dirty_inode called on read-only volume
Is remount racy?
INFO: trying to register non-static key.
The code is fine but needs lockdep annotation, or maybe
you didn't initialize this object before use?
turning off the locking correctness validator.
CPU: 0 UID: 0 PID: 8549 Comm: syz.1.418 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
Call Trace:
dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
assign_lock_key+0x133/0x150 kernel/locking/lockdep.c:984
register_lock_class+0x105/0x320 kernel/locking/lockdep.c:1299
__lock_acquire+0x99/0xd20 kernel/locking/lockdep.c:5112
lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868
rt_spin_lock+0x88/0x3e0 kernel/locking/spinlock_rt.c:56
spin_lock include/linux/spinlock_rt.h:44 [inline]
__wake_up_common_lock+0x2f/0x1e0 kernel/sched/wait.c:124
txEnd+0x8a/0x530 fs/jfs/jfs_txnmgr.c:504
jfs_create+0x33e/0xa80 fs/jfs/namei.c:159
lookup_open fs/namei.c:3796 [inline]
open_last_lookups fs/namei.c:3895 [inline]
path_openat+0x1500/0x3840 fs/namei.c:4131
do_filp_open+0x1fa/0x410 fs/namei.c:4161
do_sys_openat2+0x121/0x1c0 fs/open.c:1435
do_sys_open fs/open.c:1450 [inline]
__do_sys_openat fs/open.c:1466 [inline]
__se_sys_openat fs/open.c:1461 [inline]
__x64_sys_openat+0x138/0x170 fs/open.c:1461
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8da616eec9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f8da43d6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f8da63c5fa0 RCX: 00007f8da616eec9
RDX: 0000000000000042 RSI: 0000200000000040 RDI: ffffffffffffff9c
RBP: 00007f8da61f1f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000008 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8da63c6038 R14: 00007f8da63c5fa0 R15: 00007ffecf35a4d8
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 0 UID: 0 PID: 8549 Comm: syz.1.418 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:__wake_up_common kernel/sched/wait.c:104 [inline]
RIP: 0010:__wake_up_common_lock+0xd2/0x1e0 kernel/sched/wait.c:125
Code: ec 0f 84 d1 00 00 00 8b 6c 24 04 eb 13 48 ba 00 00 00 00 00 fc ff df 4d 39 ec 0f 84 b8 00 00 00 4d 89 e6 4c 89 e0 48 c1 e8 03 <80> 3c 10 00 74 12 4c 89 f7 e8 50 e7 85 00 48 ba 00 00 00 00 00 fc
RSP: 0018:ffffc900060c7628 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000002 RCX: abd7d86796b5fb00
RDX: dffffc0000000000 RSI: ffffffff8b1d9740 RDI: ffffffff8b1d9700
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffffbfff1d6d127 R12: 0000000000000000
R13: ffffc900031c10b0 R14: 0000000000000000 R15: dffffc0000000000
FS: 00007f8da43d66c0(0000) GS:ffff888127017000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8d9bfd4000 CR3: 000000005636a000 CR4: 00000000003526f0
Call Trace:
txEnd+0x8a/0x530 fs/jfs/jfs_txnmgr.c:504
jfs_create+0x33e/0xa80 fs/jfs/namei.c:159
lookup_open fs/namei.c:3796 [inline]
open_last_lookups fs/namei.c:3895 [inline]
path_openat+0x1500/0x3840 fs/namei.c:4131
do_filp_open+0x1fa/0x410 fs/namei.c:4161
do_sys_openat2+0x121/0x1c0 fs/open.c:1435
do_sys_open fs/open.c:1450 [inline]
__do_sys_openat fs/open.c:1466 [inline]
__se_sys_openat fs/open.c:1461 [inline]
__x64_sys_openat+0x138/0x170 fs/open.c:1461
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8da616eec9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f8da43d6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f8da63c5fa0 RCX: 00007f8da616eec9
RDX: 0000000000000042 RSI: 0000200000000040 RDI: ffffffffffffff9c
RBP: 00007f8da61f1f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000008 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8da63c6038 R14: 00007f8da63c5fa0 R15: 00007ffecf35a4d8
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__wake_up_common kernel/sched/wait.c:104 [inline]
RIP: 0010:__wake_up_common_lock+0xd2/0x1e0 kernel/sched/wait.c:125
Code: ec 0f 84 d1 00 00 00 8b 6c 24 04 eb 13 48 ba 00 00 00 00 00 fc ff df 4d 39 ec 0f 84 b8 00 00 00 4d 89 e6 4c 89 e0 48 c1 e8 03 <80> 3c 10 00 74 12 4c 89 f7 e8 50 e7 85 00 48 ba 00 00 00 00 00 fc
RSP: 0018:ffffc900060c7628 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000002 RCX: abd7d86796b5fb00
RDX: dffffc0000000000 RSI: ffffffff8b1d9740 RDI: ffffffff8b1d9700
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffffbfff1d6d127 R12: 0000000000000000
R13: ffffc900031c10b0 R14: 0000000000000000 R15: dffffc0000000000
FS: 00007f8da43d66c0(0000) GS:ffff888127017000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8d9bfd4000 CR3: 000000005636a000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
0: ec in (%dx),%al
1: 0f 84 d1 00 00 00 je 0xd8
7: 8b 6c 24 04 mov 0x4(%rsp),%ebp
b: eb 13 jmp 0x20
d: 48 ba 00 00 00 00 00 movabs $0xdffffc0000000000,%rdx
14: fc ff df
17: 4d 39 ec cmp %r13,%r12
1a: 0f 84 b8 00 00 00 je 0xd8
20: 4d 89 e6 mov %r12,%r14
23: 4c 89 e0 mov %r12,%rax
26: 48 c1 e8 03 shr $0x3,%rax
* 2a: 80 3c 10 00 cmpb $0x0,(%rax,%rdx,1) <-- trapping instruction
2e: 74 12 je 0x42
30: 4c 89 f7 mov %r14,%rdi
33: e8 50 e7 85 00 call 0x85e788
38: 48 rex.W
39: ba 00 00 00 00 mov $0x0,%edx
3e: 00 fc add %bh,%ah