------------[ cut here ]------------
class_for_each_device called for class 'devlink' before it was registered
WARNING: drivers/base/class.c:416 at class_for_each_device+0x2d8/0x390 drivers/base/class.c:415, CPU#1: kworker/1:1/37
Modules linked in:
CPU: 1 UID: 0 PID: 37 Comm: kworker/1:1 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Workqueue: events deferred_probe_timeout_work_func
Code: 8d 1d d8 14 0e 0a 4c 89 e8 48 c1 e8 03 42 80 3c 38 00 74 08 4c 89 ef e8 62 ad a5 fc 49 8b 55 00 48 89 df 48 c7 c6 0e 5f 5d 8d <67> 48 0f b9 3a b8 ea ff ff ff eb 1b e8 43 16 3b fc 49 81 c6 90 00
RSP: 0000:ffffc90000ac7a20 EFLAGS: 00010246
RAX: 1ffffffff17868c0 RBX: ffffffff8f986560 RCX: ffff88801e2c9f00
RDX: ffffffff8bc35ac0 RSI: ffffffff8d5d5f0e RDI: ffffffff8f986560
RBP: ffffc90000ac7af8 R08: ffffc90000ac7a7f R09: 0000000000000000
R10: ffffc90000ac7a60 R11: fffff52000158f50 R12: ffffc90000ac7a60
R13: ffffffff8bc34600 R14: 1ffff92000158f48 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff888125fd7000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000000ddb8000 CR4: 00000000003506f0
Call Trace:
<TASK>
fw_devlink_drivers_done+0x35/0x50 drivers/base/core.c:1837
deferred_probe_timeout_work_func+0x21/0x220 drivers/base/dd.c:305
process_one_work+0x98b/0x1630 kernel/workqueue.c:3318
process_scheduled_works kernel/workqueue.c:3401 [inline]
worker_thread+0xb49/0x1140 kernel/workqueue.c:3482
kthread+0x388/0x470 kernel/kthread.c:436
ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
</TASK>
----------------
Code disassembly (best guess):
0: 8d 1d d8 14 0e 0a lea 0xa0e14d8(%rip),%ebx # 0xa0e14de
6: 4c 89 e8 mov %r13,%rax
9: 48 c1 e8 03 shr $0x3,%rax
d: 42 80 3c 38 00 cmpb $0x0,(%rax,%r15,1)
12: 74 08 je 0x1c
14: 4c 89 ef mov %r13,%rdi
17: e8 62 ad a5 fc call 0xfca5ad7e
1c: 49 8b 55 00 mov 0x0(%r13),%rdx
20: 48 89 df mov %rbx,%rdi
23: 48 c7 c6 0e 5f 5d 8d mov $0xffffffff8d5d5f0e,%rsi
* 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction
2f: b8 ea ff ff ff mov $0xffffffea,%eax
34: eb 1b jmp 0x51
36: e8 43 16 3b fc call 0xfc3b167e
3b: 49 rex.WB
3c: 81 .byte 0x81
3d: c6 (bad)
3e: 90 nop