[   10.431665][  T256] ip (256) used greatest stack depth: 23744 bytes left
[   12.029944][  T278] 
[   12.030174][  T278] =============================
[   12.030338][  T278] WARNING: suspicious RCU usage
[   12.030504][  T278] 6.14.0-rc6-virtme #1 Not tainted
[   12.030800][  T278] -----------------------------
[   12.030950][  T278] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage!
[   12.031221][  T278] 
[   12.031221][  T278] other info that might help us debug this:
[   12.031221][  T278] 
[   12.031515][  T278] 
[   12.031515][  T278] rcu_scheduler_active = 2, debug_locks = 1
[   12.031745][  T278] 1 lock held by gro/278:
[   12.031861][  T278]  #0: ffffffffa6b6f640 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f5/0x18d0
[   12.032140][  T278] 
[   12.032140][  T278] stack backtrace:
[   12.032358][  T278] CPU: 3 UID: 0 PID: 278 Comm: gro Not tainted 6.14.0-rc6-virtme #1
[   12.032362][  T278] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   12.032364][  T278] Call Trace:
[   12.032366][  T278]  <TASK>
[   12.032368][  T278]  dump_stack_lvl+0xb0/0xd0
[   12.032376][  T278]  lockdep_rcu_suspicious+0x1ea/0x280
[   12.032387][  T278]  dev_hard_start_xmit+0x2fc/0x3f0
[   12.032398][  T278]  __dev_queue_xmit+0xfaa/0x18d0
[   12.032402][  T278]  ? _copy_from_iter+0x1d2/0x12e0
[   12.032420][  T278]  ? __pfx___dev_queue_xmit+0x10/0x10
[   12.032425][  T278]  ? packet_parse_headers+0x243/0x9d0
[   12.032436][  T278]  ? __pfx_sock_alloc_send_pskb+0x10/0x10
[   12.032443][  T278]  ? __pfx_packet_parse_headers+0x10/0x10
[   12.032448][  T278]  ? skb_copy_datagram_from_iter+0xe6/0x6e0
[   12.032455][  T278]  ? dev_get_by_index+0xb2/0x190
[   12.032465][  T278]  packet_snd+0xd0d/0x19c0
[   12.032478][  T278]  ? __lock_release+0x103/0x460
[   12.032480][  T278]  ? __might_fault+0x11b/0x170
[   12.032487][  T278]  ? __pfx_packet_snd+0x10/0x10
[   12.032489][  T278]  ? trace_lock_acquire+0x14c/0x1f0
[   12.032497][  T278]  ? lock_acquire+0x32/0xc0
[   12.032503][  T278]  ? __might_fault+0x11b/0x170
[   12.032514][  T278]  __sys_sendto+0x3c3/0x450
[   12.032521][  T278]  ? __pfx___sys_sendto+0x10/0x10
[   12.032534][  T278]  ? __lock_release+0x103/0x460
[   12.032536][  T278]  ? do_user_addr_fault+0x972/0xe30
[   12.032542][  T278]  ? __pfx___lock_release+0x10/0x10
[   12.032549][  T278]  ? __pfx___up_read+0x10/0x10
[   12.032556][  T278]  ? do_user_addr_fault+0x972/0xe30
[   12.032563][  T278]  ? do_user_addr_fault+0x97c/0xe30
[   12.032571][  T278]  __x64_sys_sendto+0xe0/0x1c0
[   12.032575][  T278]  ? lockdep_hardirqs_on_prepare+0x275/0x410
[   12.032580][  T278]  do_syscall_64+0xc1/0x1d0
[   12.032587][  T278]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   12.032590][  T278] RIP: 0033:0x7f1480cd5a4a
[   12.032595][  T278] 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
[   12.032598][  T278] RSP: 002b:00007ffda1c1e328 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
[   12.032601][  T278] RAX: ffffffffffffffda RBX: 000000000000009a RCX: 00007f1480cd5a4a
[   12.032603][  T278] RDX: 000000000000009a RSI: 00000000004392e0 RDI: 0000000000000005
[   12.032605][  T278] RBP: 0000000000000064 R08: 00007ffda1c1e390 R09: 0000000000000014
[   12.032607][  T278] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000005
[   12.032608][  T278] R13: 00007ffda1c1e390 R14: 0000000000000036 R15: 00007ffda1c1e9fd
[   12.032625][  T278]  </TASK>