[   10.211119][  T256] ip (256) used greatest stack depth: 24224 bytes left
[   11.783569][  T279] 
[   11.783898][  T279] =============================
[   11.784085][  T279] WARNING: suspicious RCU usage
[   11.784262][  T279] 6.14.0-rc6-virtme #1 Not tainted
[   11.784440][  T279] -----------------------------
[   11.784613][  T279] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage!
[   11.785222][  T279] 
[   11.785222][  T279] other info that might help us debug this:
[   11.785222][  T279] 
[   11.785557][  T279] 
[   11.785557][  T279] rcu_scheduler_active = 2, debug_locks = 1
[   11.785854][  T279] 1 lock held by gro/279:
[   11.785999][  T279]  #0: ffffffffa8b6f640 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f5/0x18d0
[   11.786336][  T279] 
[   11.786336][  T279] stack backtrace:
[   11.786555][  T279] CPU: 2 UID: 0 PID: 279 Comm: gro Not tainted 6.14.0-rc6-virtme #1
[   11.786560][  T279] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   11.786562][  T279] Call Trace:
[   11.786564][  T279]  <TASK>
[   11.786567][  T279]  dump_stack_lvl+0xb0/0xd0
[   11.786577][  T279]  lockdep_rcu_suspicious+0x1ea/0x280
[   11.786589][  T279]  dev_hard_start_xmit+0x2fc/0x3f0
[   11.786601][  T279]  __dev_queue_xmit+0xfaa/0x18d0
[   11.786605][  T279]  ? _copy_from_iter+0x1d2/0x12e0
[   11.786625][  T279]  ? __pfx___dev_queue_xmit+0x10/0x10
[   11.786630][  T279]  ? packet_parse_headers+0x243/0x9d0
[   11.786642][  T279]  ? __pfx_sock_alloc_send_pskb+0x10/0x10
[   11.786649][  T279]  ? __pfx_packet_parse_headers+0x10/0x10
[   11.786654][  T279]  ? skb_copy_datagram_from_iter+0xe6/0x6e0
[   11.786662][  T279]  ? dev_get_by_index+0xb2/0x190
[   11.786673][  T279]  packet_snd+0xd0d/0x19c0
[   11.786685][  T279]  ? __lock_release+0x103/0x460
[   11.786689][  T279]  ? __might_fault+0x11b/0x170
[   11.786696][  T279]  ? __pfx_packet_snd+0x10/0x10
[   11.786699][  T279]  ? trace_lock_acquire+0x14c/0x1f0
[   11.786707][  T279]  ? lock_acquire+0x32/0xc0
[   11.786714][  T279]  ? __might_fault+0x11b/0x170
[   11.786726][  T279]  __sys_sendto+0x3c3/0x450
[   11.786734][  T279]  ? __pfx___sys_sendto+0x10/0x10
[   11.786747][  T279]  ? __lock_release+0x103/0x460
[   11.786749][  T279]  ? do_user_addr_fault+0x972/0xe30
[   11.786756][  T279]  ? __pfx___lock_release+0x10/0x10
[   11.786763][  T279]  ? __pfx___up_read+0x10/0x10
[   11.786771][  T279]  ? do_user_addr_fault+0x972/0xe30
[   11.786779][  T279]  ? do_user_addr_fault+0x97c/0xe30
[   11.786786][  T279]  __x64_sys_sendto+0xe0/0x1c0
[   11.786791][  T279]  ? lockdep_hardirqs_on_prepare+0x275/0x410
[   11.786796][  T279]  do_syscall_64+0xc1/0x1d0
[   11.786805][  T279]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   11.786810][  T279] RIP: 0033:0x7f132de30a4a
[   11.786815][  T279] 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
[   11.786818][  T279] RSP: 002b:00007ffd37153a48 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
[   11.786822][  T279] RAX: ffffffffffffffda RBX: 000000000000009a RCX: 00007f132de30a4a
[   11.786824][  T279] RDX: 000000000000009a RSI: 00000000004392e0 RDI: 0000000000000005
[   11.786826][  T279] RBP: 0000000000000064 R08: 00007ffd37153ab0 R09: 0000000000000014
[   11.786828][  T279] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000005
[   11.786830][  T279] R13: 00007ffd37153ab0 R14: 0000000000000036 R15: 00007ffd371549fd
[   11.786847][  T279]  </TASK>