[   11.899220][  T275] br0: port 1(veth1) entered blocking state
[   11.900222][  T275] br0: port 1(veth1) entered disabled state
[   11.900639][  T275] veth1: entered allmulticast mode
[   11.902658][  T275] veth1: entered promiscuous mode
[   11.982093][  T277] br0: port 2(veth3) entered blocking state
[   11.982806][  T277] br0: port 2(veth3) entered disabled state
[   11.983102][  T277] veth3: entered allmulticast mode
[   11.985148][  T277] veth3: entered promiscuous mode
[   12.275235][   T38] br0: port 1(veth1) entered blocking state
[   12.275811][   T38] br0: port 1(veth1) entered forwarding state
[   12.445384][   T40] br0: port 2(veth3) entered blocking state
[   12.445693][   T40] br0: port 2(veth3) entered forwarding state
[   18.428092][  T301] 
[   18.428385][  T301] =============================
[   18.428564][  T301] WARNING: suspicious RCU usage
[   18.428811][  T301] 6.14.0-rc6-virtme #1 Not tainted
[   18.429299][  T301] -----------------------------
[   18.429467][  T301] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage!
[   18.429748][  T301] 
[   18.429748][  T301] other info that might help us debug this:
[   18.429748][  T301] 
[   18.430099][  T301] 
[   18.430099][  T301] rcu_scheduler_active = 2, debug_locks = 1
[   18.430355][  T301] 1 lock held by mausezahn/301:
[   18.430522][  T301]  #0: ffffffff8915b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0
[   18.430822][  T301] 
[   18.430822][  T301] stack backtrace:
[   18.431016][  T301] CPU: 0 UID: 0 PID: 301 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1
[   18.431020][  T301] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   18.431023][  T301] Call Trace:
[   18.431025][  T301]  <TASK>
[   18.431028][  T301]  dump_stack_lvl+0xb0/0xd0
[   18.431037][  T301]  lockdep_rcu_suspicious+0x1ea/0x280
[   18.431048][  T301]  dev_hard_start_xmit+0x2fc/0x3f0
[   18.431059][  T301]  __dev_queue_xmit+0xfaf/0x18d0
[   18.431073][  T301]  ? __pfx___dev_queue_xmit+0x10/0x10
[   18.431078][  T301]  ? packet_parse_headers+0x231/0x9c0
[   18.431087][  T301]  ? __pfx_sock_alloc_send_pskb+0x10/0x10
[   18.431094][  T301]  ? __pfx_packet_parse_headers+0x10/0x10
[   18.431098][  T301]  ? skb_copy_datagram_from_iter+0xe6/0x6f0
[   18.431104][  T301]  ? dev_get_by_index+0xb2/0x190
[   18.431117][  T301]  packet_snd+0xd0c/0x19d0
[   18.431128][  T301]  ? __lock_release+0x103/0x460
[   18.431133][  T301]  ? __might_fault+0x11b/0x170
[   18.431141][  T301]  ? __pfx_packet_snd+0x10/0x10
[   18.431143][  T301]  ? trace_lock_acquire+0x14c/0x1f0
[   18.431146][  T301]  ? __might_fault+0x11b/0x170
[   18.431153][  T301]  ? lock_acquire+0x32/0xc0
[   18.431160][  T301]  ? __might_fault+0x11b/0x170
[   18.431171][  T301]  __sys_sendto+0x3c3/0x450
[   18.431177][  T301]  ? __pfx___sys_sendto+0x10/0x10
[   18.431192][  T301]  ? sock_ioctl+0x3b6/0x590
[   18.431197][  T301]  ? _copy_to_user+0x5c/0x80
[   18.431207][  T301]  ? __pfx_put_timespec64+0x10/0x10
[   18.431216][  T301]  ? posix_cpu_clock_get+0xe1/0x240
[   18.431225][  T301]  ? __x64_sys_clock_gettime+0x17a/0x200
[   18.431231][  T301]  ? __pfx___x64_sys_clock_gettime+0x10/0x10
[   18.431240][  T301]  __x64_sys_sendto+0xe0/0x1c0
[   18.431245][  T301]  ? lockdep_hardirqs_on_prepare+0x275/0x410
[   18.431250][  T301]  do_syscall_64+0xc1/0x1d0
[   18.431259][  T301]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   18.431265][  T301] RIP: 0033:0x7f4b6e7dca4a
[   18.431270][  T301] 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
[   18.431274][  T301] RSP: 002b:00007fff942683a8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
[   18.431277][  T301] RAX: ffffffffffffffda RBX: 000000000b2459d0 RCX: 00007f4b6e7dca4a
[   18.431280][  T301] RDX: 000000000000002a RSI: 000000000b245c42 RDI: 0000000000000005
[   18.431282][  T301] RBP: 000000000b245c42 R08: 00007fff942683b0 R09: 0000000000000014
[   18.431284][  T301] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[   18.431285][  T301] R13: 000000000000002a R14: 00007fff942683b0 R15: 00007fff9426848c
[   18.431302][  T301]  </TASK>
[   18.716983][  T311] br0: port 2(veth3) entered disabled state
[   18.887134][  T313] br0: port 1(veth1) entered disabled state
[   19.053603][  T315] veth3: left allmulticast mode
[   19.053853][  T315] veth3: left promiscuous mode
[   19.054179][  T315] br0: port 2(veth3) entered disabled state
[   19.056211][  T315] veth1: left allmulticast mode
[   19.056451][  T315] veth1: left promiscuous mode
[   19.056838][  T315] br0: port 1(veth1) entered disabled state