[ 1978.656831][T26677] 
[ 1978.657204][T26677] =============================
[ 1978.657378][T26677] WARNING: suspicious RCU usage
[ 1978.657567][T26677] 6.14.0-rc6-virtme #1 Not tainted
[ 1978.657735][T26677] -----------------------------
[ 1978.657936][T26677] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage!
[ 1978.658210][T26677] 
[ 1978.658210][T26677] other info that might help us debug this:
[ 1978.658210][T26677] 
[ 1978.658532][T26677] 
[ 1978.658532][T26677] rcu_scheduler_active = 2, debug_locks = 1
[ 1978.658772][T26677] 1 lock held by arping/26677:
[ 1978.658940][T26677]  #0: ffffffffa776f640 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f5/0x18d0
[ 1978.659301][T26677] 
[ 1978.659301][T26677] stack backtrace:
[ 1978.659514][T26677] CPU: 2 UID: 0 PID: 26677 Comm: arping Not tainted 6.14.0-rc6-virtme #1
[ 1978.659518][T26677] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1978.659521][T26677] Call Trace:
[ 1978.659523][T26677]  <TASK>
[ 1978.659526][T26677]  dump_stack_lvl+0xb0/0xd0
[ 1978.659535][T26677]  lockdep_rcu_suspicious+0x1ea/0x280
[ 1978.659548][T26677]  dev_hard_start_xmit+0x2fc/0x3f0
[ 1978.659560][T26677]  __dev_queue_xmit+0xfaa/0x18d0
[ 1978.659564][T26677]  ? _copy_from_iter+0x1d2/0x12e0
[ 1978.659583][T26677]  ? __pfx___dev_queue_xmit+0x10/0x10
[ 1978.659588][T26677]  ? packet_parse_headers+0x243/0x9d0
[ 1978.659600][T26677]  ? __pfx_sock_alloc_send_pskb+0x10/0x10
[ 1978.659608][T26677]  ? __pfx_packet_parse_headers+0x10/0x10
[ 1978.659613][T26677]  ? skb_copy_datagram_from_iter+0xe6/0x6e0
[ 1978.659621][T26677]  ? dev_get_by_index+0xb2/0x190
[ 1978.659632][T26677]  packet_snd+0xd0d/0x19c0
[ 1978.659644][T26677]  ? __lock_release+0x103/0x460
[ 1978.659647][T26677]  ? __might_fault+0x11b/0x170
[ 1978.659656][T26677]  ? __pfx_packet_snd+0x10/0x10
[ 1978.659658][T26677]  ? trace_lock_acquire+0x14c/0x1f0
[ 1978.659666][T26677]  ? lock_acquire+0x32/0xc0
[ 1978.659672][T26677]  ? __might_fault+0x11b/0x170
[ 1978.659684][T26677]  __sys_sendto+0x3c3/0x450
[ 1978.659692][T26677]  ? __pfx___sys_sendto+0x10/0x10
[ 1978.659697][T26677]  ? lockdep_hardirqs_on_prepare+0x12b/0x410
[ 1978.659711][T26677]  ? __pfx_rcu_do_batch+0x10/0x10
[ 1978.659724][T26677]  ? lockdep_hardirqs_on_prepare+0x12b/0x410
[ 1978.659735][T26677]  ? __local_bh_enable+0x80/0x90
[ 1978.659747][T26677]  __x64_sys_sendto+0xe0/0x1c0
[ 1978.659751][T26677]  ? lockdep_hardirqs_on_prepare+0x275/0x410
[ 1978.659755][T26677]  do_syscall_64+0xc1/0x1d0
[ 1978.659765][T26677]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 1978.659771][T26677] RIP: 0033:0x7f717e536a4a
[ 1978.659776][T26677] 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
[ 1978.659779][T26677] RSP: 002b:00007ffcd9d6d768 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
[ 1978.659783][T26677] RAX: ffffffffffffffda RBX: 0000000000000100 RCX: 00007f717e536a4a
[ 1978.659785][T26677] RDX: 000000000000001c RSI: 00007ffcd9d6d780 RDI: 0000000000000005
[ 1978.659787][T26677] RBP: 00007ffcd9d6d8d0 R08: 00007ffcd9d6ed30 R09: 0000000000000014
[ 1978.659789][T26677] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f717e3e4710
[ 1978.659790][T26677] R13: 00000000004047b4 R14: 0000000000407de0 R15: 00007f717e63c000
[ 1978.659807][T26677]  </TASK>
[ 1993.514832][T26810] GACT probability NOT on