[ 1300.919426][T17517] ip6_gre: GRE over IPv6 tunneling driver
[ 1311.260277][T17601] 
[ 1311.260652][T17601] =============================
[ 1311.260897][T17601] WARNING: suspicious RCU usage
[ 1311.261351][T17601] 6.14.0-rc6-virtme #1 Not tainted
[ 1311.261518][T17601] -----------------------------
[ 1311.261679][T17601] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage!
[ 1311.261969][T17601] 
[ 1311.261969][T17601] other info that might help us debug this:
[ 1311.261969][T17601] 
[ 1311.262289][T17601] 
[ 1311.262289][T17601] rcu_scheduler_active = 2, debug_locks = 1
[ 1311.262536][T17601] 1 lock held by mausezahn/17601:
[ 1311.262702][T17601]  #0: ffffffff9395b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0
[ 1311.263016][T17601] 
[ 1311.263016][T17601] stack backtrace:
[ 1311.263277][T17601] CPU: 2 UID: 0 PID: 17601 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1
[ 1311.263282][T17601] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1311.263284][T17601] Call Trace:
[ 1311.263286][T17601]  <TASK>
[ 1311.263289][T17601]  dump_stack_lvl+0xb0/0xd0
[ 1311.263297][T17601]  lockdep_rcu_suspicious+0x1ea/0x280
[ 1311.263308][T17601]  dev_hard_start_xmit+0x2fc/0x3f0
[ 1311.263318][T17601]  __dev_queue_xmit+0xfaf/0x18d0
[ 1311.263332][T17601]  ? __pfx___dev_queue_xmit+0x10/0x10
[ 1311.263336][T17601]  ? packet_parse_headers+0x231/0x9c0
[ 1311.263345][T17601]  ? __pfx_sock_alloc_send_pskb+0x10/0x10
[ 1311.263351][T17601]  ? __pfx_packet_parse_headers+0x10/0x10
[ 1311.263355][T17601]  ? skb_copy_datagram_from_iter+0xe6/0x6f0
[ 1311.263360][T17601]  ? dev_get_by_index+0xb2/0x190
[ 1311.263372][T17601]  packet_snd+0xd0c/0x19d0
[ 1311.263383][T17601]  ? __lock_release+0x103/0x460
[ 1311.263387][T17601]  ? __might_fault+0x11b/0x170
[ 1311.263393][T17601]  ? __pfx_packet_snd+0x10/0x10
[ 1311.263396][T17601]  ? trace_lock_acquire+0x14c/0x1f0
[ 1311.263398][T17601]  ? __might_fault+0x11b/0x170
[ 1311.263405][T17601]  ? lock_acquire+0x32/0xc0
[ 1311.263411][T17601]  ? __might_fault+0x11b/0x170
[ 1311.263422][T17601]  __sys_sendto+0x3c3/0x450
[ 1311.263428][T17601]  ? __pfx___sys_sendto+0x10/0x10
[ 1311.263442][T17601]  ? sock_ioctl+0x3b6/0x590
[ 1311.263451][T17601]  ? __pfx___up_read+0x10/0x10
[ 1311.263459][T17601]  ? do_user_addr_fault+0x374/0xe30
[ 1311.263470][T17601]  ? do_user_addr_fault+0x374/0xe30
[ 1311.263477][T17601]  __x64_sys_sendto+0xe0/0x1c0
[ 1311.263480][T17601]  ? lockdep_hardirqs_on_prepare+0x275/0x410
[ 1311.263486][T17601]  do_syscall_64+0xc1/0x1d0
[ 1311.263493][T17601]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 1311.263498][T17601] RIP: 0033:0x7f1783be0a4a
[ 1311.263503][T17601] 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
[ 1311.263506][T17601] RSP: 002b:00007ffdb23d0318 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
[ 1311.263510][T17601] RAX: ffffffffffffffda RBX: 00000000039f29d0 RCX: 00007f1783be0a4a
[ 1311.263512][T17601] RDX: 0000000000000062 RSI: 00000000039f25c2 RDI: 0000000000000005
[ 1311.263514][T17601] RBP: 00000000039f25c2 R08: 00007ffdb23d0320 R09: 0000000000000014
[ 1311.263515][T17601] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 1311.263517][T17601] R13: 0000000000000062 R14: 00007ffdb23d0320 R15: 0000000000000000
[ 1311.263533][T17601]  </TASK>