[   43.207924][  T566] veth2: entered promiscuous mode
[   44.215872][  T569] 
[   44.216106][  T569] =============================
[   44.216295][  T569] WARNING: suspicious RCU usage
[   44.216458][  T569] 6.14.0-rc6-virtme #1 Not tainted
[   44.216611][  T569] -----------------------------
[   44.216765][  T569] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage!
[   44.217047][  T569] 
[   44.217047][  T569] other info that might help us debug this:
[   44.217047][  T569] 
[   44.217348][  T569] 
[   44.217348][  T569] rcu_scheduler_active = 2, debug_locks = 1
[   44.217570][  T569] 1 lock held by mausezahn/569:
[   44.217725][  T569]  #0: ffffffff9515b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0
[   44.218039][  T569] 
[   44.218039][  T569] stack backtrace:
[   44.218243][  T569] CPU: 0 UID: 0 PID: 569 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1
[   44.218247][  T569] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   44.218249][  T569] Call Trace:
[   44.218251][  T569]  <TASK>
[   44.218253][  T569]  dump_stack_lvl+0xb0/0xd0
[   44.218261][  T569]  lockdep_rcu_suspicious+0x1ea/0x280
[   44.218271][  T569]  dev_hard_start_xmit+0x2fc/0x3f0
[   44.218282][  T569]  __dev_queue_xmit+0xfaf/0x18d0
[   44.218296][  T569]  ? __pfx___dev_queue_xmit+0x10/0x10
[   44.218300][  T569]  ? packet_parse_headers+0x231/0x9c0
[   44.218309][  T569]  ? __pfx_sock_alloc_send_pskb+0x10/0x10
[   44.218314][  T569]  ? __pfx_packet_parse_headers+0x10/0x10
[   44.218319][  T569]  ? skb_copy_datagram_from_iter+0xe6/0x6f0
[   44.218324][  T569]  ? dev_get_by_index+0xb2/0x190
[   44.218335][  T569]  packet_snd+0xd0c/0x19d0
[   44.218348][  T569]  ? __lock_release+0x103/0x460
[   44.218351][  T569]  ? __might_fault+0x11b/0x170
[   44.218358][  T569]  ? __pfx_packet_snd+0x10/0x10
[   44.218360][  T569]  ? trace_lock_acquire+0x14c/0x1f0
[   44.218362][  T569]  ? __might_fault+0x11b/0x170
[   44.218369][  T569]  ? lock_acquire+0x32/0xc0
[   44.218375][  T569]  ? __might_fault+0x11b/0x170
[   44.218386][  T569]  __sys_sendto+0x3c3/0x450
[   44.218392][  T569]  ? __pfx___sys_sendto+0x10/0x10
[   44.218406][  T569]  ? sock_ioctl+0x3b6/0x590
[   44.218411][  T569]  ? _copy_to_user+0x5c/0x80
[   44.218419][  T569]  ? __pfx_put_timespec64+0x10/0x10
[   44.218427][  T569]  ? posix_cpu_clock_get+0xe1/0x240
[   44.218436][  T569]  ? __x64_sys_clock_gettime+0x17a/0x200
[   44.218440][  T569]  ? __pfx___x64_sys_clock_gettime+0x10/0x10
[   44.218447][  T569]  __x64_sys_sendto+0xe0/0x1c0
[   44.218451][  T569]  ? lockdep_hardirqs_on_prepare+0x275/0x410
[   44.218457][  T569]  do_syscall_64+0xc1/0x1d0
[   44.218464][  T569]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   44.218469][  T569] RIP: 0033:0x7f3d9c3e1a4a
[   44.218473][  T569] 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
[   44.218476][  T569] RSP: 002b:00007ffed0e16c08 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
[   44.218479][  T569] RAX: ffffffffffffffda RBX: 00000000212e99d0 RCX: 00007f3d9c3e1a4a
[   44.218482][  T569] RDX: 0000000000000012 RSI: 00000000212e9bd2 RDI: 0000000000000005
[   44.218484][  T569] RBP: 00000000212e9bd2 R08: 00007ffed0e16c10 R09: 0000000000000014
[   44.218485][  T569] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[   44.218487][  T569] R13: 0000000000000012 R14: 00007ffed0e16c10 R15: 0000000000000000
[   44.218503][  T569]  </TASK>

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[  345.227229][  T566] veth2: left promiscuous mode

WAIT TIMEOUT stderr