[ 1316.725899][T17465] br1: port 1(veth1) entered blocking state
[ 1316.726439][T17465] br1: port 1(veth1) entered disabled state
[ 1316.726802][T17465] veth1: entered allmulticast mode
[ 1316.729614][T17465] veth1: entered promiscuous mode
[ 1316.836929][ T4009] br1: port 1(veth1) entered blocking state
[ 1316.837404][ T4009] br1: port 1(veth1) entered forwarding state
[ 1316.950252][T17467] br1: port 2(veth2) entered blocking state
[ 1316.950900][T17467] br1: port 2(veth2) entered disabled state
[ 1316.951260][T17467] veth2: entered allmulticast mode
[ 1316.953626][T17467] veth2: entered promiscuous mode
[ 1317.074026][   T41] br1: port 2(veth2) entered blocking state
[ 1317.074340][   T41] br1: port 2(veth2) entered forwarding state
[ 1325.103778][T17512] 
[ 1325.104095][T17512] =============================
[ 1325.104269][T17512] WARNING: suspicious RCU usage
[ 1325.104435][T17512] 6.14.0-rc6-virtme #1 Not tainted
[ 1325.104606][T17512] -----------------------------
[ 1325.104780][T17512] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage!
[ 1325.105108][T17512] 
[ 1325.105108][T17512] other info that might help us debug this:
[ 1325.105108][T17512] 
[ 1325.105427][T17512] 
[ 1325.105427][T17512] rcu_scheduler_active = 2, debug_locks = 1
[ 1325.105670][T17512] 1 lock held by mausezahn/17512:
[ 1325.105836][T17512]  #0: ffffffff9c55b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0
[ 1325.106151][T17512] 
[ 1325.106151][T17512] stack backtrace:
[ 1325.106363][T17512] CPU: 1 UID: 0 PID: 17512 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1
[ 1325.106368][T17512] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1325.106369][T17512] Call Trace:
[ 1325.106371][T17512]  <TASK>
[ 1325.106374][T17512]  dump_stack_lvl+0xb0/0xd0
[ 1325.106382][T17512]  lockdep_rcu_suspicious+0x1ea/0x280
[ 1325.106393][T17512]  dev_hard_start_xmit+0x2fc/0x3f0
[ 1325.106403][T17512]  __dev_queue_xmit+0xfaf/0x18d0
[ 1325.106417][T17512]  ? __pfx___dev_queue_xmit+0x10/0x10
[ 1325.106421][T17512]  ? packet_parse_headers+0x231/0x9c0
[ 1325.106430][T17512]  ? __pfx_sock_alloc_send_pskb+0x10/0x10
[ 1325.106436][T17512]  ? __pfx_packet_parse_headers+0x10/0x10
[ 1325.106441][T17512]  ? skb_copy_datagram_from_iter+0xe6/0x6f0
[ 1325.106447][T17512]  ? dev_get_by_index+0xb2/0x190
[ 1325.106458][T17512]  packet_snd+0xd0c/0x19d0
[ 1325.106469][T17512]  ? __lock_release+0x103/0x460
[ 1325.106473][T17512]  ? __might_fault+0x11b/0x170
[ 1325.106480][T17512]  ? __pfx_packet_snd+0x10/0x10
[ 1325.106482][T17512]  ? trace_lock_acquire+0x14c/0x1f0
[ 1325.106485][T17512]  ? __might_fault+0x11b/0x170
[ 1325.106491][T17512]  ? lock_acquire+0x32/0xc0
[ 1325.106498][T17512]  ? __might_fault+0x11b/0x170
[ 1325.106508][T17512]  __sys_sendto+0x3c3/0x450
[ 1325.106514][T17512]  ? __pfx___sys_sendto+0x10/0x10
[ 1325.106529][T17512]  ? sock_ioctl+0x3b6/0x590
[ 1325.106539][T17512]  ? __pfx___up_read+0x10/0x10
[ 1325.106547][T17512]  ? do_user_addr_fault+0x374/0xe30
[ 1325.106557][T17512]  ? do_user_addr_fault+0x374/0xe30
[ 1325.106564][T17512]  __x64_sys_sendto+0xe0/0x1c0
[ 1325.106568][T17512]  ? lockdep_hardirqs_on_prepare+0x275/0x410
[ 1325.106573][T17512]  do_syscall_64+0xc1/0x1d0
[ 1325.106581][T17512]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 1325.106585][T17512] RIP: 0033:0x7f174bedda4a
[ 1325.106590][T17512] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb b8 0f 1f 00 f3 0f 1e fa 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 15 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 7e c3 0f 1f 44 00 00 41 54 48 83 ec 30 44 89
[ 1325.106593][T17512] RSP: 002b:00007ffdab35b0e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
[ 1325.106596][T17512] RAX: ffffffffffffffda RBX: 000000001d2b99d0 RCX: 00007f174bedda4a
[ 1325.106599][T17512] RDX: 000000000000008e RSI: 000000001d2b9cf2 RDI: 0000000000000005
[ 1325.106600][T17512] RBP: 000000001d2b9cf2 R08: 00007ffdab35b0f0 R09: 0000000000000014
[ 1325.106602][T17512] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 1325.106604][T17512] R13: 000000000000008e R14: 00007ffdab35b0f0 R15: 0000000000000000
[ 1325.106620][T17512]  </TASK>
[ 1344.093214][T17827] br1: port 2(veth2) entered disabled state
[ 1344.186758][T17828] veth2: left allmulticast mode
[ 1344.187039][T17828] veth2: left promiscuous mode
[ 1344.187376][T17828] br1: port 2(veth2) entered disabled state
[ 1344.261436][T17829] br1: port 1(veth1) entered disabled state
[ 1344.343496][T17830] veth1: left allmulticast mode
[ 1344.343791][T17830] veth1: left promiscuous mode
[ 1344.344188][T17830] br1: port 1(veth1) entered disabled state