------------[ cut here ]------------
WARNING: CPU: 0 PID: 53 at kernel/workqueue.c:2259 __queue_work+0xcd3/0xf50 kernel/workqueue.c:2258
Modules linked in:
CPU: 0 UID: 0 PID: 53 Comm: kworker/u8:3 Not tainted 6.11.0-rc1-next-20240729-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
Workqueue: netns cleanup_net
RIP: 0010:__queue_work+0xcd3/0xf50 kernel/workqueue.c:2258
Code: ff e8 c1 e8 36 00 90 0f 0b 90 e9 1e fd ff ff e8 b3 e8 36 00 eb 13 e8 ac e8 36 00 eb 0c e8 a5 e8 36 00 eb 05 e8 9e e8 36 00 90 <0f> 0b 90 48 83 c4 60 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc
RSP: 0018:ffffc90000007b28 EFLAGS: 00010046
RAX: ffffffff815ce2ad RBX: 0000000000000100 RCX: ffff888015955a00
RDX: 0000000000000100 RSI: 0000000000000100 RDI: 0000000000000000
RBP: 0000000000010000 R08: ffffffff815cd6d8 R09: 1ffffffff202faed
R10: dffffc0000000000 R11: ffffffff815ceae0 R12: ffff88805e847000
R13: ffff88805e8471c0 R14: dffffc0000000000 R15: 0000000000000008
FS:  0000000000000000(0000) GS:ffff8880b9200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c00126b000 CR3: 00000000617da000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 call_timer_fn+0x18e/0x650 kernel/time/timer.c:1792
 expire_timers kernel/time/timer.c:1838 [inline]
 __run_timers kernel/time/timer.c:2417 [inline]
 __run_timer_base+0x695/0x8e0 kernel/time/timer.c:2428
 run_timer_base kernel/time/timer.c:2437 [inline]
 run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2447
 handle_softirqs+0x2c4/0x970 kernel/softirq.c:554
 __do_softirq kernel/softirq.c:588 [inline]
 invoke_softirq kernel/softirq.c:428 [inline]
 __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:649
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
 sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1043
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:unwind_next_frame+0x1bae/0x2a00 arch/x86/kernel/unwind_orc.c:682
Code: db 0f 84 74 04 00 00 e8 80 a8 52 00 43 0f b6 04 2f 84 c0 0f 85 8e 05 00 00 c7 45 00 00 00 00 00 31 c0 48 81 c4 a0 00 00 00 5b <41> 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc e8 4f a8 52 00 43 80 3c
RSP: 0018:ffffc90000bd7090 EFLAGS: 00000286
RAX: ffffffff81412501 RBX: ffffffff815ee86d RCX: ffff888015955a00
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: ffffc90000bd70c0 R08: ffffffff814125c5 R09: ffffffff814120bf
R10: 0000000000000003 R11: ffff888015955a00 R12: ffffc90000bd7ee0
R13: dffffc0000000000 R14: ffffc90000bd0000 R15: ffffc90000bd7ee8
 arch_stack_walk+0x151/0x1b0 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
 kasan_save_stack+0x3f/0x60 mm/kasan/common.c:47
 __kasan_record_aux_stack+0xac/0xc0 mm/kasan/generic.c:541
 __call_rcu_common kernel/rcu/tree.c:3106 [inline]
 call_rcu+0x167/0xa70 kernel/rcu/tree.c:3210
 kernfs_put+0x1dc/0x370 fs/kernfs/dir.c:578
 kernfs_remove_by_name_ns+0xe4/0x160 fs/kernfs/dir.c:1695
 kernfs_remove_by_name include/linux/kernfs.h:625 [inline]
 remove_files fs/sysfs/group.c:28 [inline]
 sysfs_remove_group+0xfe/0x2c0 fs/sysfs/group.c:319
 sysfs_remove_groups+0x54/0xb0 fs/sysfs/group.c:343
 device_remove_groups drivers/base/core.c:2833 [inline]
 device_remove_attrs+0x1dc/0x290 drivers/base/core.c:2963
 device_del+0x572/0x9b0 drivers/base/core.c:3867
 unregister_netdevice_many_notify+0x1709/0x1c40 net/core/dev.c:11377
 cleanup_net+0x75d/0xcc0 net/core/net_namespace.c:635
 process_one_work kernel/workqueue.c:3231 [inline]
 process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312
 worker_thread+0x86d/0xd40 kernel/workqueue.c:3390
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:144
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
----------------
Code disassembly (best guess):
   0:	db 0f                	fisttpl (%rdi)
   2:	84 74 04 00          	test   %dh,0x0(%rsp,%rax,1)
   6:	00 e8                	add    %ch,%al
   8:	80 a8 52 00 43 0f b6 	subb   $0xb6,0xf430052(%rax)
   f:	04 2f                	add    $0x2f,%al
  11:	84 c0                	test   %al,%al
  13:	0f 85 8e 05 00 00    	jne    0x5a7
  19:	c7 45 00 00 00 00 00 	movl   $0x0,0x0(%rbp)
  20:	31 c0                	xor    %eax,%eax
  22:	48 81 c4 a0 00 00 00 	add    $0xa0,%rsp
  29:	5b                   	pop    %rbx
* 2a:	41 5c                	pop    %r12 <-- trapping instruction
  2c:	41 5d                	pop    %r13
  2e:	41 5e                	pop    %r14
  30:	41 5f                	pop    %r15
  32:	5d                   	pop    %rbp
  33:	c3                   	ret
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	cc                   	int3
  38:	e8 4f a8 52 00       	call   0x52a88c
  3d:	43                   	rex.XB
  3e:	80                   	.byte 0x80
  3f:	3c                   	.byte 0x3c