[ 10.213721][ T250] ip (250) used greatest stack depth: 23848 bytes left [ 14.117722][ T317] br0: port 1(veth1) entered blocking state [ 14.118163][ T317] br0: port 1(veth1) entered disabled state [ 14.118639][ T317] veth1: entered allmulticast mode [ 14.127526][ T317] veth1: entered promiscuous mode [ 14.135853][ T317] ip (317) used greatest stack depth: 23768 bytes left [ 14.192542][ T319] br0: port 2(veth2) entered blocking state [ 14.192815][ T319] br0: port 2(veth2) entered disabled state [ 14.193076][ T319] veth2: entered allmulticast mode [ 14.195537][ T319] veth2: entered promiscuous mode [ 14.263163][ T320] br0: port 3(veth4) entered blocking state [ 14.263508][ T320] br0: port 3(veth4) entered disabled state [ 14.263767][ T320] veth4: entered allmulticast mode [ 14.265623][ T320] veth4: entered promiscuous mode [ 14.843288][ T41] br0: port 1(veth1) entered blocking state [ 14.843666][ T41] br0: port 1(veth1) entered forwarding state [ 14.927068][ T151] br0: port 2(veth2) entered blocking state [ 14.927395][ T151] br0: port 2(veth2) entered forwarding state [ 15.000495][ T38] br0: port 3(veth4) entered blocking state [ 15.000776][ T38] br0: port 3(veth4) entered forwarding state [ 30.141308][ T387] veth3: entered promiscuous mode [ 30.619619][ T393] GACT probability NOT on [ 30.786678][ T394] [ 30.787005][ T394] ============================= [ 30.787274][ T394] WARNING: suspicious RCU usage [ 30.787514][ T394] 6.14.0-rc6-virtme #1 Not tainted [ 30.787810][ T394] ----------------------------- [ 30.788131][ T394] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 30.788410][ T394] [ 30.788410][ T394] other info that might help us debug this: [ 30.788410][ T394] [ 30.788705][ T394] [ 30.788705][ T394] rcu_scheduler_active = 2, debug_locks = 1 [ 30.788932][ T394] 1 lock held by mausezahn/394: [ 30.789103][ T394] #0: ffffffffb3d5b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 30.789391][ T394] [ 30.789391][ T394] stack backtrace: [ 30.789583][ T394] CPU: 3 UID: 0 PID: 394 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1 [ 30.789587][ T394] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 30.789589][ T394] Call Trace: [ 30.789591][ T394] [ 30.789593][ T394] dump_stack_lvl+0xb0/0xd0 [ 30.789600][ T394] lockdep_rcu_suspicious+0x1ea/0x280 [ 30.789611][ T394] dev_hard_start_xmit+0x2fc/0x3f0 [ 30.789621][ T394] __dev_queue_xmit+0xfaf/0x18d0 [ 30.789635][ T394] ? __pfx___dev_queue_xmit+0x10/0x10 [ 30.789640][ T394] ? packet_parse_headers+0x231/0x9c0 [ 30.789648][ T394] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 30.789654][ T394] ? __pfx_packet_parse_headers+0x10/0x10 [ 30.789659][ T394] ? skb_copy_datagram_from_iter+0xe6/0x6f0 [ 30.789664][ T394] ? dev_get_by_index+0xb2/0x190 [ 30.789675][ T394] packet_snd+0xd0c/0x19d0 [ 30.789687][ T394] ? __lock_release+0x103/0x460 [ 30.789690][ T394] ? __might_fault+0x11b/0x170 [ 30.789697][ T394] ? __pfx_packet_snd+0x10/0x10 [ 30.789699][ T394] ? trace_lock_acquire+0x14c/0x1f0 [ 30.789701][ T394] ? __might_fault+0x11b/0x170 [ 30.789708][ T394] ? lock_acquire+0x32/0xc0 [ 30.789715][ T394] ? __might_fault+0x11b/0x170 [ 30.789726][ T394] __sys_sendto+0x3c3/0x450 [ 30.789731][ T394] ? __pfx___sys_sendto+0x10/0x10 [ 30.789746][ T394] ? sock_ioctl+0x3b6/0x590 [ 30.789756][ T394] ? __pfx___up_read+0x10/0x10 [ 30.789764][ T394] ? do_user_addr_fault+0x374/0xe30 [ 30.789774][ T394] ? do_user_addr_fault+0x374/0xe30 [ 30.789781][ T394] __x64_sys_sendto+0xe0/0x1c0 [ 30.789784][ T394] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 30.789790][ T394] do_syscall_64+0xc1/0x1d0 [ 30.789798][ T394] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 30.789802][ T394] RIP: 0033:0x7f2c82c57a4a [ 30.789807][ T394] 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 [ 30.789810][ T394] RSP: 002b:00007ffd8e815928 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 30.789813][ T394] RAX: ffffffffffffffda RBX: 0000000032ada9d0 RCX: 00007f2c82c57a4a [ 30.789815][ T394] RDX: 0000000000000062 RSI: 0000000032ada5c2 RDI: 0000000000000005 [ 30.789817][ T394] RBP: 0000000032ada5c2 R08: 00007ffd8e815930 R09: 0000000000000014 [ 30.789819][ T394] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 30.789820][ T394] R13: 0000000000000062 R14: 00007ffd8e815930 R15: 0000000000000000 [ 30.789836][ T394] [ 32.346955][ T400] veth3: left promiscuous mode [ 32.427264][ T401] veth3: entered promiscuous mode [ 34.271698][ T410] veth3: left promiscuous mode [ 34.431293][ T418] br0: port 3(veth4) entered disabled state [ 34.509122][ T419] br0: port 2(veth2) entered disabled state [ 34.598109][ T420] br0: port 1(veth1) entered disabled state [ 34.694810][ T421] veth4: left allmulticast mode [ 34.695430][ T421] veth4: left promiscuous mode [ 34.695784][ T421] br0: port 3(veth4) entered disabled state [ 34.697457][ T421] veth2: left allmulticast mode [ 34.697684][ T421] veth2: left promiscuous mode [ 34.698020][ T421] br0: port 2(veth2) entered disabled state [ 34.699825][ T421] veth1: left allmulticast mode [ 34.700046][ T421] veth1: left promiscuous mode [ 34.700396][ T421] br0: port 1(veth1) entered disabled state