[   20.415461][  T326] veth2: entered promiscuous mode
[   21.397707][  T329] 
[   21.397999][  T329] =============================
[   21.398180][  T329] WARNING: suspicious RCU usage
[   21.398388][  T329] 6.14.0-rc6-virtme #1 Not tainted
[   21.398596][  T329] -----------------------------
[   21.398774][  T329] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage!
[   21.399083][  T329] 
[   21.399083][  T329] other info that might help us debug this:
[   21.399083][  T329] 
[   21.399433][  T329] 
[   21.399433][  T329] rcu_scheduler_active = 2, debug_locks = 1
[   21.399815][  T329] 1 lock held by mausezahn/329:
[   21.399981][  T329]  #0: ffffffffa7f5b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0
[   21.400311][  T329] 
[   21.400311][  T329] stack backtrace:
[   21.400519][  T329] CPU: 0 UID: 0 PID: 329 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1
[   21.400524][  T329] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   21.400526][  T329] Call Trace:
[   21.400528][  T329]  <TASK>
[   21.400531][  T329]  dump_stack_lvl+0xb0/0xd0
[   21.400540][  T329]  lockdep_rcu_suspicious+0x1ea/0x280
[   21.400552][  T329]  dev_hard_start_xmit+0x2fc/0x3f0
[   21.400563][  T329]  __dev_queue_xmit+0xfaf/0x18d0
[   21.400577][  T329]  ? __pfx___dev_queue_xmit+0x10/0x10
[   21.400581][  T329]  ? packet_parse_headers+0x231/0x9c0
[   21.400590][  T329]  ? __pfx_sock_alloc_send_pskb+0x10/0x10
[   21.400597][  T329]  ? __pfx_packet_parse_headers+0x10/0x10
[   21.400601][  T329]  ? skb_copy_datagram_from_iter+0xe6/0x6f0
[   21.400608][  T329]  ? dev_get_by_index+0xb2/0x190
[   21.400620][  T329]  packet_snd+0xd0c/0x19d0
[   21.400632][  T329]  ? __lock_release+0x103/0x460
[   21.400636][  T329]  ? __might_fault+0x11b/0x170
[   21.400644][  T329]  ? __pfx_packet_snd+0x10/0x10
[   21.400646][  T329]  ? trace_lock_acquire+0x14c/0x1f0
[   21.400649][  T329]  ? __might_fault+0x11b/0x170
[   21.400656][  T329]  ? lock_acquire+0x32/0xc0
[   21.400662][  T329]  ? __might_fault+0x11b/0x170
[   21.400673][  T329]  __sys_sendto+0x3c3/0x450
[   21.400679][  T329]  ? __pfx___sys_sendto+0x10/0x10
[   21.400693][  T329]  ? sock_ioctl+0x3b6/0x590
[   21.400698][  T329]  ? _copy_to_user+0x5c/0x80
[   21.400708][  T329]  ? __pfx_put_timespec64+0x10/0x10
[   21.400717][  T329]  ? posix_cpu_clock_get+0xe1/0x240
[   21.400727][  T329]  ? __x64_sys_clock_gettime+0x17a/0x200
[   21.400731][  T329]  ? __pfx___x64_sys_clock_gettime+0x10/0x10
[   21.400739][  T329]  __x64_sys_sendto+0xe0/0x1c0
[   21.400743][  T329]  ? lockdep_hardirqs_on_prepare+0x275/0x410
[   21.400748][  T329]  do_syscall_64+0xc1/0x1d0
[   21.400757][  T329]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   21.400763][  T329] RIP: 0033:0x7f1621eb0a4a
[   21.400769][  T329] 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
[   21.400772][  T329] RSP: 002b:00007fffb4708088 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
[   21.400776][  T329] RAX: ffffffffffffffda RBX: 000000001b47f9d0 RCX: 00007f1621eb0a4a
[   21.400779][  T329] RDX: 0000000000000012 RSI: 000000001b47fbd2 RDI: 0000000000000005
[   21.400781][  T329] RBP: 000000001b47fbd2 R08: 00007fffb4708090 R09: 0000000000000014
[   21.400783][  T329] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[   21.400784][  T329] R13: 0000000000000012 R14: 00007fffb4708090 R15: 0000000000000000
[   21.400801][  T329]  </TASK>
[   39.311434][  T353] 8021q: 802.1Q VLAN Support v1.8

WAIT TIMEOUT stderr

Ctrl-C stderr

Ctrl-C stderr
[  340.666060][  T326] veth2: left promiscuous mode