[ 62.939547][ T681] 8021q: 802.1Q VLAN Support v1.8 [ 63.397523][ T686] gre: GRE over IPv4 demultiplexor driver [ 63.462294][ T686] ip6_gre: GRE over IPv6 tunneling driver [ 65.907926][ T715] ip (715) used greatest stack depth: 24000 bytes left [ 73.334423][ T761] GACT probability NOT on [ 73.731838][ T764] [ 73.732246][ T764] ============================= [ 73.732509][ T764] WARNING: suspicious RCU usage [ 73.732768][ T764] 6.14.0-rc6-virtme #1 Not tainted [ 73.733037][ T764] ----------------------------- [ 73.733615][ T764] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 73.734133][ T764] [ 73.734133][ T764] other info that might help us debug this: [ 73.734133][ T764] [ 73.734639][ T764] [ 73.734639][ T764] rcu_scheduler_active = 2, debug_locks = 1 [ 73.735007][ T764] 1 lock held by mausezahn/764: [ 73.735291][ T764] #0: ffffffff9eb5b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 73.735769][ T764] [ 73.735769][ T764] stack backtrace: [ 73.736085][ T764] CPU: 0 UID: 0 PID: 764 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1 [ 73.736092][ T764] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 73.736095][ T764] Call Trace: [ 73.736098][ T764] [ 73.736103][ T764] dump_stack_lvl+0xb0/0xd0 [ 73.736115][ T764] lockdep_rcu_suspicious+0x1ea/0x280 [ 73.736135][ T764] dev_hard_start_xmit+0x2fc/0x3f0 [ 73.736155][ T764] __dev_queue_xmit+0xfaf/0x18d0 [ 73.736182][ T764] ? __pfx___dev_queue_xmit+0x10/0x10 [ 73.736190][ T764] ? packet_parse_headers+0x231/0x9c0 [ 73.736206][ T764] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 73.736217][ T764] ? __pfx_packet_parse_headers+0x10/0x10 [ 73.736226][ T764] ? skb_copy_datagram_from_iter+0xe6/0x6f0 [ 73.736237][ T764] ? dev_get_by_index+0xb2/0x190 [ 73.736259][ T764] packet_snd+0xd0c/0x19d0 [ 73.736280][ T764] ? __lock_release+0x103/0x460 [ 73.736285][ T764] ? __might_fault+0x11b/0x170 [ 73.736298][ T764] ? __pfx_packet_snd+0x10/0x10 [ 73.736302][ T764] ? trace_lock_acquire+0x14c/0x1f0 [ 73.736306][ T764] ? __might_fault+0x11b/0x170 [ 73.736319][ T764] ? lock_acquire+0x32/0xc0 [ 73.736331][ T764] ? __might_fault+0x11b/0x170 [ 73.736350][ T764] __sys_sendto+0x3c3/0x450 [ 73.736361][ T764] ? __pfx___sys_sendto+0x10/0x10 [ 73.736387][ T764] ? sock_ioctl+0x3b6/0x590 [ 73.736405][ T764] ? __pfx___up_read+0x10/0x10 [ 73.736420][ T764] ? do_user_addr_fault+0x374/0xe30 [ 73.736440][ T764] ? do_user_addr_fault+0x374/0xe30 [ 73.736452][ T764] __x64_sys_sendto+0xe0/0x1c0 [ 73.736459][ T764] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 73.736468][ T764] do_syscall_64+0xc1/0x1d0 [ 73.736483][ T764] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 73.736491][ T764] RIP: 0033:0x7fdff36c5a4a [ 73.736499][ T764] 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 [ 73.736504][ T764] RSP: 002b:00007ffddd918d08 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 73.736510][ T764] RAX: ffffffffffffffda RBX: 00000000312519d0 RCX: 00007fdff36c5a4a [ 73.736513][ T764] RDX: 0000000000000062 RSI: 00000000312515c2 RDI: 0000000000000005 [ 73.736516][ T764] RBP: 00000000312515c2 R08: 00007ffddd918d10 R09: 0000000000000014 [ 73.736519][ T764] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 73.736522][ T764] R13: 0000000000000062 R14: 00007ffddd918d10 R15: 0000000000000000 [ 73.736551][ T764] [ 75.655388][ T787] tc (787) used greatest stack depth: 23552 bytes left