------------[ cut here ]------------
WARNING: CPU: 1 PID: 52 at kernel/workqueue.c:2257 __queue_work+0xcd3/0xf50 kernel/workqueue.c:2256
Modules linked in:
CPU: 1 UID: 0 PID: 52 Comm: kworker/u8:3 Not tainted 6.14.0-rc3-syzkaller-g6ccf6adb05d0 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Workqueue: netns cleanup_net
RIP: 0010:__queue_work+0xcd3/0xf50 kernel/workqueue.c:2256
Code: ff e8 e1 af 38 00 90 0f 0b 90 e9 b2 fe ff ff e8 d3 af 38 00 eb 13 e8 cc af 38 00 eb 0c e8 c5 af 38 00 eb 05 e8 be af 38 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:ffffc90000a18b08 EFLAGS: 00010046
RAX: ffffffff81890abd RBX: 0000000000000100 RCX: ffff88801eafbc00
RDX: 0000000000000100 RSI: 0000000000000100 RDI: 0000000000000000
RBP: 0000000000010000 R08: ffffffff8188fee8 R09: 1ffffffff2079d2e
R10: dffffc0000000000 R11: ffffffff818912f0 R12: ffff88805fc06000
R13: ffff88805fc061c0 R14: dffffc0000000000 R15: 0000000000000008
FS:  0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c0098fb000 CR3: 0000000032236000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 call_timer_fn+0x187/0x650 kernel/time/timer.c:1789
 expire_timers kernel/time/timer.c:1835 [inline]
 __run_timers kernel/time/timer.c:2414 [inline]
 __run_timer_base+0x695/0x8e0 kernel/time/timer.c:2426
 run_timer_base kernel/time/timer.c:2435 [inline]
 run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2445
 handle_softirqs+0x2d4/0x9b0 kernel/softirq.c:561
 __do_softirq kernel/softirq.c:595 [inline]
 invoke_softirq kernel/softirq.c:435 [inline]
 __irq_exit_rcu+0xf7/0x220 kernel/softirq.c:662
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:678
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
 sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1049
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__kasan_check_write+0x0/0x20 mm/kasan/shadow.c:36
Code: 48 8b 0c 24 31 d2 e9 ef e6 ff ff 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 89 f6 48 8b 0c 24 ba 01 00 00 00 e9 bc e6 ff ff 66 2e
RSP: 0018:ffffc90000bd7670 EFLAGS: 00000282
RAX: ffffffff826697ca RBX: ffff88801284fe10 RCX: ffff88801eafbc00
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff88801284fe10
RBP: 1ffff1100d1c6ce3 R08: ffff88801bef68df R09: 1ffff110037ded1b
R10: dffffc0000000000 R11: ffffed10037ded1c R12: dffffc0000000000
R13: ffff888068e366e0 R14: ffff88801284fe10 R15: ffff888068e3671c
 instrument_atomic_read_write include/linux/instrumented.h:96 [inline]
 atomic_dec_and_test include/linux/atomic/atomic-instrumented.h:1383 [inline]
 kernfs_put+0x30/0x370 fs/kernfs/dir.c:557
 sysfs_put include/linux/sysfs.h:822 [inline]
 __kobject_del+0xea/0x310 lib/kobject.c:605
 kobject_del+0x45/0x60 lib/kobject.c:627
 device_del+0x7ff/0x9b0 drivers/base/core.c:3874
 unregister_netdevice_many_notify+0x19b4/0x1f10 net/core/dev.c:11926
 cleanup_net+0x76d/0xd60 net/core/net_namespace.c:647
 process_one_work kernel/workqueue.c:3236 [inline]
 process_scheduled_works+0xabe/0x18e0 kernel/workqueue.c:3317
 worker_thread+0x870/0xd30 kernel/workqueue.c:3398
 kthread+0x7a9/0x920 kernel/kthread.c:464
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
----------------
Code disassembly (best guess):
   0:	48 8b 0c 24          	mov    (%rsp),%rcx
   4:	31 d2                	xor    %edx,%edx
   6:	e9 ef e6 ff ff       	jmp    0xffffe6fa
   b:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  12:	00 00 00
  15:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	90                   	nop
  23:	90                   	nop
  24:	90                   	nop
  25:	90                   	nop
  26:	90                   	nop
  27:	90                   	nop
  28:	90                   	nop
  29:	90                   	nop
* 2a:	f3 0f 1e fa          	endbr64 <-- trapping instruction
  2e:	89 f6                	mov    %esi,%esi
  30:	48 8b 0c 24          	mov    (%rsp),%rcx
  34:	ba 01 00 00 00       	mov    $0x1,%edx
  39:	e9 bc e6 ff ff       	jmp    0xffffe6fa
  3e:	66                   	data16
  3f:	2e                   	cs