[   12.184699][  T277] 
[   12.184998][  T277] =============================
[   12.185173][  T277] WARNING: suspicious RCU usage
[   12.185349][  T277] 6.14.0-rc6-virtme #1 Not tainted
[   12.185523][  T277] -----------------------------
[   12.185769][  T277] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage!
[   12.186057][  T277] 
[   12.186057][  T277] other info that might help us debug this:
[   12.186057][  T277] 
[   12.186364][  T277] 
[   12.186364][  T277] rcu_scheduler_active = 2, debug_locks = 1
[   12.186600][  T277] 1 lock held by arping/277:
[   12.186767][  T277]  #0: ffffffff8896f640 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f5/0x18d0
[   12.187104][  T277] 
[   12.187104][  T277] stack backtrace:
[   12.187326][  T277] CPU: 2 UID: 0 PID: 277 Comm: arping Not tainted 6.14.0-rc6-virtme #1
[   12.187330][  T277] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   12.187332][  T277] Call Trace:
[   12.187335][  T277]  <TASK>
[   12.187337][  T277]  dump_stack_lvl+0xb0/0xd0
[   12.187351][  T277]  lockdep_rcu_suspicious+0x1ea/0x280
[   12.187367][  T277]  dev_hard_start_xmit+0x2fc/0x3f0
[   12.187379][  T277]  __dev_queue_xmit+0xfaa/0x18d0
[   12.187383][  T277]  ? _copy_from_iter+0x1d2/0x12e0
[   12.187406][  T277]  ? __pfx___dev_queue_xmit+0x10/0x10
[   12.187411][  T277]  ? packet_parse_headers+0x243/0x9d0
[   12.187429][  T277]  ? __pfx_sock_alloc_send_pskb+0x10/0x10
[   12.187435][  T277]  ? __pfx_packet_parse_headers+0x10/0x10
[   12.187440][  T277]  ? skb_copy_datagram_from_iter+0xe6/0x6e0
[   12.187447][  T277]  ? dev_get_by_index+0xb2/0x190
[   12.187457][  T277]  packet_snd+0xd0d/0x19c0
[   12.187469][  T277]  ? __lock_release+0x103/0x460
[   12.187472][  T277]  ? __might_fault+0x11b/0x170
[   12.187481][  T277]  ? __pfx_packet_snd+0x10/0x10
[   12.187484][  T277]  ? trace_lock_acquire+0x14c/0x1f0
[   12.187487][  T277]  ? __pfx___lock_release+0x10/0x10
[   12.187493][  T277]  ? lock_acquire+0x32/0xc0
[   12.187499][  T277]  ? __might_fault+0x11b/0x170
[   12.187510][  T277]  __sys_sendto+0x3c3/0x450
[   12.187517][  T277]  ? __pfx___sys_sendto+0x10/0x10
[   12.187529][  T277]  ? __lock_release+0x103/0x460
[   12.187534][  T277]  ? __pfx___lock_release+0x10/0x10
[   12.187542][  T277]  ? __pfx___up_read+0x10/0x10
[   12.187548][  T277]  ? do_user_addr_fault+0x374/0xe30
[   12.187564][  T277]  ? do_user_addr_fault+0x374/0xe30
[   12.187571][  T277]  __x64_sys_sendto+0xe0/0x1c0
[   12.187576][  T277]  ? lockdep_hardirqs_on_prepare+0x275/0x410
[   12.187580][  T277]  do_syscall_64+0xc1/0x1d0
[   12.187591][  T277]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   12.187600][  T277] RIP: 0033:0x7f6a66069a4a
[   12.187604][  T277] 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
[   12.187608][  T277] RSP: 002b:00007ffcc0cd9088 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
[   12.187617][  T277] RAX: ffffffffffffffda RBX: 0000000000000100 RCX: 00007f6a66069a4a
[   12.187620][  T277] RDX: 000000000000001c RSI: 00007ffcc0cd90a0 RDI: 0000000000000005
[   12.187621][  T277] RBP: 00007ffcc0cd91f0 R08: 00007ffcc0cda650 R09: 0000000000000014
[   12.187623][  T277] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f6a65f17710
[   12.187625][  T277] R13: 00000000004047b4 R14: 0000000000407de0 R15: 00007f6a6616f000
[   12.187642][  T277]  </TASK>
[   15.011759][  T304] ip (304) used greatest stack depth: 23728 bytes left
[   26.981501][  T413] GACT probability NOT on