bridge0: port 2(bridge_slave_1) entered disabled state
bridge_slave_0: left allmulticast mode
bridge_slave_0: left promiscuous mode
bridge0: port 1(bridge_slave_0) entered disabled state
BUG: spinlock bad magic on CPU#0, kworker/u32:16/6259
Oops: general protection fault, probably for non-canonical address 0xe0001bffe00020b9: 0000 [#1] PREEMPT SMP KASAN NOPTI
KASAN: maybe wild-memory-access in range [0x0000ffff000105c8-0x0000ffff000105cf]
CPU: 0 UID: 0 PID: 6259 Comm: kworker/u32:16 Not tainted 6.13.0-rc5-syzkaller-00163-gab75170520d4 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Workqueue: netns cleanup_net
RIP: 0010:task_pid_nr include/linux/pid.h:232 [inline]
RIP: 0010:spin_dump kernel/locking/spinlock_debug.c:64 [inline]
RIP: 0010:spin_bug+0x100/0x1d0 kernel/locking/spinlock_debug.c:78
Code: 08 84 d2 0f 85 db 00 00 00 48 85 ed 44 8b 4b 08 74 7d 48 8d bd c8 05 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 04 3c 03 7e 68 44 8b 85 c8 05 00 00 48 8d 8d
RSP: 0018:ffffc900039bf7e0 EFLAGS: 00010002
RAX: dffffc0000000000 RBX: ffff8880355c8020 RCX: ffffffff81795dc9
RDX: 00001fffe00020b9 RSI: ffffffff817a0796 RDI: 0000ffff000105c8
RBP: 0000ffff00010000 R08: 0000000000000005 R09: 0000000000000001
R10: 0000000080000001 R11: 697073203a475542 R12: ffffffff8b6d41c0
R13: ffff88803131c880 R14: ffffc900039bf920 R15: 0000000000000001
FS: 0000000000000000(0000) GS:ffff88806a600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000200000c0 CR3: 000000002ecce000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
debug_spin_lock_before kernel/locking/spinlock_debug.c:86 [inline]
do_raw_spin_lock+0x225/0x2c0 kernel/locking/spinlock_debug.c:115
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:111 [inline]
_raw_spin_lock_irqsave+0x42/0x60 kernel/locking/spinlock.c:162
down+0x2a/0xa0 kernel/locking/semaphore.c:59
netpoll_poll_disable+0x79/0x110 net/core/netpoll.c:222
__dev_close_many+0xd9/0x310 net/core/dev.c:1532
dev_close_many+0x24c/0x6a0 net/core/dev.c:1585
unregister_netdevice_many_notify+0x489/0x1e60 net/core/dev.c:11502
cleanup_net+0x58c/0xbd0 net/core/net_namespace.c:643
process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3229
process_scheduled_works kernel/workqueue.c:3310 [inline]
worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:task_pid_nr include/linux/pid.h:232 [inline]
RIP: 0010:spin_dump kernel/locking/spinlock_debug.c:64 [inline]
RIP: 0010:spin_bug+0x100/0x1d0 kernel/locking/spinlock_debug.c:78
Code: 08 84 d2 0f 85 db 00 00 00 48 85 ed 44 8b 4b 08 74 7d 48 8d bd c8 05 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 04 3c 03 7e 68 44 8b 85 c8 05 00 00 48 8d 8d
RSP: 0018:ffffc900039bf7e0 EFLAGS: 00010002
RAX: dffffc0000000000 RBX: ffff8880355c8020 RCX: ffffffff81795dc9
RDX: 00001fffe00020b9 RSI: ffffffff817a0796 RDI: 0000ffff000105c8
RBP: 0000ffff00010000 R08: 0000000000000005 R09: 0000000000000001
R10: 0000000080000001 R11: 697073203a475542 R12: ffffffff8b6d41c0
R13: ffff88803131c880 R14: ffffc900039bf920 R15: 0000000000000001
FS: 0000000000000000(0000) GS:ffff88806a600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000200000c0 CR3: 000000002ecce000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 08 84 d2 0f 85 db 00 or %al,0xdb850f(%rdx,%rdx,8)
7: 00 00 add %al,(%rax)
9: 48 85 ed test %rbp,%rbp
c: 44 8b 4b 08 mov 0x8(%rbx),%r9d
10: 74 7d je 0x8f
12: 48 8d bd c8 05 00 00 lea 0x5c8(%rbp),%rdi
19: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
20: fc ff df
23: 48 89 fa mov %rdi,%rdx
26: 48 c1 ea 03 shr $0x3,%rdx
* 2a: 0f b6 04 02 movzbl (%rdx,%rax,1),%eax <-- trapping instruction
2e: 84 c0 test %al,%al
30: 74 04 je 0x36
32: 3c 03 cmp $0x3,%al
34: 7e 68 jle 0x9e
36: 44 8b 85 c8 05 00 00 mov 0x5c8(%rbp),%r8d
3d: 48 rex.W
3e: 8d .byte 0x8d
3f: 8d .byte 0x8d