syzbot

bridge_slave_1: left allmulticast mode
bridge_slave_1: left promiscuous mode
bridge0: port 2(bridge_slave_1) entered disabled state
bridge0: port 1(bridge_slave_0) entered disabled state
------------[ cut here ]------------
DEBUG_LOCKS_WARN_ON(1)
WARNING: CPU: 1 PID: 2481 at kernel/locking/lockdep.c:231 hlock_class kernel/locking/lockdep.c:231 [inline]
WARNING: CPU: 1 PID: 2481 at kernel/locking/lockdep.c:231 check_wait_context kernel/locking/lockdep.c:4772 [inline]
WARNING: CPU: 1 PID: 2481 at kernel/locking/lockdep.c:231 __lock_acquire+0x58c/0x2040 kernel/locking/lockdep.c:5092
Modules linked in:
CPU: 1 UID: 0 PID: 2481 Comm: kworker/u8:7 Not tainted 6.11.0-rc7-syzkaller-00133-ge936e7d4a83b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Workqueue: netns cleanup_net
RIP: 0010:hlock_class kernel/locking/lockdep.c:231 [inline]
RIP: 0010:check_wait_context kernel/locking/lockdep.c:4772 [inline]
RIP: 0010:__lock_acquire+0x58c/0x2040 kernel/locking/lockdep.c:5092
Code: 00 00 83 3d 85 d0 a8 0e 00 75 23 90 48 c7 c7 00 d4 0a 8c 48 c7 c6 a0 d6 0a 8c e8 7f d8 e5 ff 48 ba 00 00 00 00 00 fc ff df 90 <0f> 0b 90 90 90 31 db 48 81 c3 c4 00 00 00 48 89 d8 48 c1 e8 03 0f
RSP: 0018:ffffc9000970f390 EFLAGS: 00010046
RAX: 49dc1272002e9e00 RBX: 00000000000015fc RCX: ffff88802fd29e00
RDX: dffffc0000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000019 R08: ffffffff8155b372 R09: 1ffff1101712519a
R10: dffffc0000000000 R11: ffffed101712519b R12: ffff88802fd29e00
R13: 00000000000015fc R14: 1ffff11005fa5539 R15: ffff88802fd2a9c8
FS:  0000000000000000(0000) GS:ffff8880b8900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f91bcc6afdc CR3: 000000007c326000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5759
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162
 down+0x39/0xc0 kernel/locking/semaphore.c:59
 netpoll_poll_disable+0x10a/0x1d0 net/core/netpoll.c:228
 __dev_close_many+0x107/0x300 net/core/dev.c:1530
 dev_close_many+0x24e/0x4c0 net/core/dev.c:1583
 unregister_netdevice_many_notify+0x50b/0x1c40 net/core/dev.c:11327
 cleanup_net+0x75d/0xcc0 net/core/net_namespace.c:635
 process_one_work kernel/workqueue.c:3231 [inline]
 process_scheduled_works+0xa2e/0x1830 kernel/workqueue.c:3312
 worker_thread+0x870/0xd30 kernel/workqueue.c:3393
 kthread+0x2f2/0x390 kernel/kthread.c:389
 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>