------------[ cut here ]------------
WARNING: CPU: 0 PID: 2945 at kernel/workqueue.c:1441 __queue_work+0xddc/0xf90
Modules linked in:
CPU: 0 PID: 2945 Comm: kworker/u4:5 Not tainted 6.1.128-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Workqueue: netns cleanup_net
RIP: 0010:__queue_work+0xddc/0xf90 kernel/workqueue.c:1441
Code: 8b 3c 24 e8 c6 87 88 00 e9 d9 fc ff ff e8 dc f4 30 00 89 ee 48 c7 c7 40 9a 1d 8d e8 ee 09 16 03 e9 1e fc ff ff e8 c4 f4 30 00 <0f> 0b 48 83 c4 50 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 ae f4 30 00
RSP: 0018:ffffc90000007af8 EFLAGS: 00010046
RAX: ffffffff8159a7dc RBX: 00000000000b0012 RCX: ffff88802fb19dc0
RDX: 0000000000000100 RSI: 0000000000000100 RDI: 0000000000000000
RBP: 0000000000010000 R08: ffffffff815a9585 R09: fffffbfff1d36536
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: dffffc0000000000 R14: 0000000000000008 R15: ffff888073c87000
FS:  0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f87143edb48 CR3: 0000000062934000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 call_timer_fn+0x1ad/0x6b0 kernel/time/timer.c:1504
 expire_timers kernel/time/timer.c:1544 [inline]
 __run_timers+0x6a8/0x890 kernel/time/timer.c:1820
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1833
 handle_softirqs+0x2ee/0xa40 kernel/softirq.c:578
 __do_softirq kernel/softirq.c:612 [inline]
 invoke_softirq kernel/softirq.c:452 [inline]
 __irq_exit_rcu+0x157/0x240 kernel/softirq.c:661
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:673
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1118
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:check_region_inline mm/kasan/generic.c:175 [inline]
RIP: 0010:kasan_check_range+0x20/0x290 mm/kasan/generic.c:189
Code: cc cc cc cc cc cc cc cc cc cc 55 41 57 41 56 53 b0 01 48 85 f6 0f 84 9a 01 00 00 48 89 fd 48 01 f5 0f 82 5a 02 00 00 48 89 fd <48> c1 ed 2f 81 fd ff ff 01 00 0f 82 47 02 00 00 48 89 fb 48 c1 eb
RSP: 0018:ffffc9000d387458 EFLAGS: 00000282
RAX: ffff8880b8f00001 RBX: ffffffff8e50bf40 RCX: ffffffff8169ded5
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff88802fb19dc0
RBP: ffff88802fb19dc0 R08: dffffc0000000000 R09: fffffbfff1ca17e9
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8880301d0000
R13: dffffc0000000000 R14: 1ffffffff1ca17e8 R15: ffff88802fb19dc0
 instrument_atomic_read include/linux/instrumented.h:72 [inline]
 _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
 test_ti_thread_flag include/linux/thread_info.h:118 [inline]
 need_resched include/linux/sched.h:2232 [inline]
 mutex_spin_on_owner+0x195/0x330 kernel/locking/mutex.c:373
 mutex_optimistic_spin kernel/locking/mutex.c:476 [inline]
 __mutex_lock_common kernel/locking/mutex.c:607 [inline]
 __mutex_lock+0x2d3/0xd80 kernel/locking/mutex.c:747
 fib_seq_sum+0x31/0x290 net/core/fib_notifier.c:46
 fib_dump_is_consistent net/core/fib_notifier.c:90 [inline]
 register_fib_notifier+0x2d4/0x360 net/core/fib_notifier.c:113
 nsim_fib_create+0xa2c/0xba0 drivers/net/netdevsim/fib.c:1597
 nsim_dev_reload_create drivers/net/netdevsim/dev.c:1488 [inline]
 nsim_dev_reload_up+0x3cd/0x8e0 drivers/net/netdevsim/dev.c:988
 devlink_reload+0x2a0/0x6a0 net/devlink/leftover.c:4479
 devlink_pernet_pre_exit+0x150/0x2f0 net/devlink/leftover.c:12501
 ops_pre_exit_list net/core/net_namespace.c:162 [inline]
 cleanup_net+0x60e/0xd20 net/core/net_namespace.c:620
 process_one_work+0x8a9/0x11d0 kernel/workqueue.c:2292
 worker_thread+0xa47/0x1200 kernel/workqueue.c:2439
 kthread+0x28d/0x320 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
----------------
Code disassembly (best guess):
   0:	cc                   	int3
   1:	cc                   	int3
   2:	cc                   	int3
   3:	cc                   	int3
   4:	cc                   	int3
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	cc                   	int3
   9:	cc                   	int3
   a:	55                   	push   %rbp
   b:	41 57                	push   %r15
   d:	41 56                	push   %r14
   f:	53                   	push   %rbx
  10:	b0 01                	mov    $0x1,%al
  12:	48 85 f6             	test   %rsi,%rsi
  15:	0f 84 9a 01 00 00    	je     0x1b5
  1b:	48 89 fd             	mov    %rdi,%rbp
  1e:	48 01 f5             	add    %rsi,%rbp
  21:	0f 82 5a 02 00 00    	jb     0x281
  27:	48 89 fd             	mov    %rdi,%rbp
* 2a:	48 c1 ed 2f          	shr    $0x2f,%rbp <-- trapping instruction
  2e:	81 fd ff ff 01 00    	cmp    $0x1ffff,%ebp
  34:	0f 82 47 02 00 00    	jb     0x281
  3a:	48 89 fb             	mov    %rdi,%rbx
  3d:	48                   	rex.W
  3e:	c1                   	.byte 0xc1
  3f:	eb                   	.byte 0xeb