[ 10.858056][ T250] ip (250) used greatest stack depth: 24224 bytes left [ 15.008621][ T317] br0: port 1(veth1) entered blocking state [ 15.009107][ T317] br0: port 1(veth1) entered disabled state [ 15.009476][ T317] veth1: entered allmulticast mode [ 15.011469][ T317] veth1: entered promiscuous mode [ 15.095689][ T318] br0: port 2(veth2) entered blocking state [ 15.096252][ T318] br0: port 2(veth2) entered disabled state [ 15.096534][ T318] veth2: entered allmulticast mode [ 15.098826][ T318] veth2: entered promiscuous mode [ 15.188568][ T319] br0: port 3(veth4) entered blocking state [ 15.188883][ T319] br0: port 3(veth4) entered disabled state [ 15.189215][ T319] veth4: entered allmulticast mode [ 15.191223][ T319] veth4: entered promiscuous mode [ 15.784237][ T38] br0: port 1(veth1) entered blocking state [ 15.784602][ T38] br0: port 1(veth1) entered forwarding state [ 15.870684][ T41] br0: port 2(veth2) entered blocking state [ 15.871108][ T41] br0: port 2(veth2) entered forwarding state [ 15.948904][ T40] br0: port 3(veth4) entered blocking state [ 15.949290][ T40] br0: port 3(veth4) entered forwarding state [ 31.150591][ T387] veth3: entered promiscuous mode [ 31.638796][ T393] GACT probability NOT on [ 31.669278][ T390] tc (390) used greatest stack depth: 22952 bytes left [ 31.792555][ T394] [ 31.792850][ T394] ============================= [ 31.793036][ T394] WARNING: suspicious RCU usage [ 31.793198][ T394] 6.14.0-rc6-virtme #1 Not tainted [ 31.793355][ T394] ----------------------------- [ 31.793536][ T394] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 31.793800][ T394] [ 31.793800][ T394] other info that might help us debug this: [ 31.793800][ T394] [ 31.794117][ T394] [ 31.794117][ T394] rcu_scheduler_active = 2, debug_locks = 1 [ 31.794346][ T394] 1 lock held by mausezahn/394: [ 31.794504][ T394] #0: ffffffff9e95b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 31.794838][ T394] [ 31.794838][ T394] stack backtrace: [ 31.795042][ T394] CPU: 0 UID: 0 PID: 394 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1 [ 31.795048][ T394] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 31.795050][ T394] Call Trace: [ 31.795052][ T394] [ 31.795055][ T394] dump_stack_lvl+0xb0/0xd0 [ 31.795065][ T394] lockdep_rcu_suspicious+0x1ea/0x280 [ 31.795077][ T394] dev_hard_start_xmit+0x2fc/0x3f0 [ 31.795087][ T394] __dev_queue_xmit+0xfaf/0x18d0 [ 31.795102][ T394] ? __pfx___dev_queue_xmit+0x10/0x10 [ 31.795106][ T394] ? packet_parse_headers+0x231/0x9c0 [ 31.795116][ T394] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 31.795123][ T394] ? __pfx_packet_parse_headers+0x10/0x10 [ 31.795127][ T394] ? skb_copy_datagram_from_iter+0xe6/0x6f0 [ 31.795133][ T394] ? dev_get_by_index+0xb2/0x190 [ 31.795145][ T394] packet_snd+0xd0c/0x19d0 [ 31.795157][ T394] ? __lock_release+0x103/0x460 [ 31.795161][ T394] ? __might_fault+0x11b/0x170 [ 31.795170][ T394] ? __pfx_packet_snd+0x10/0x10 [ 31.795172][ T394] ? trace_lock_acquire+0x14c/0x1f0 [ 31.795175][ T394] ? __might_fault+0x11b/0x170 [ 31.795182][ T394] ? lock_acquire+0x32/0xc0 [ 31.795189][ T394] ? __might_fault+0x11b/0x170 [ 31.795200][ T394] __sys_sendto+0x3c3/0x450 [ 31.795207][ T394] ? __pfx___sys_sendto+0x10/0x10 [ 31.795221][ T394] ? sock_ioctl+0x3b6/0x590 [ 31.795232][ T394] ? __pfx___up_read+0x10/0x10 [ 31.795242][ T394] ? do_user_addr_fault+0x374/0xe30 [ 31.795253][ T394] ? do_user_addr_fault+0x374/0xe30 [ 31.795260][ T394] __x64_sys_sendto+0xe0/0x1c0 [ 31.795264][ T394] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 31.795269][ T394] do_syscall_64+0xc1/0x1d0 [ 31.795279][ T394] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 31.795285][ T394] RIP: 0033:0x7feb8ab41a4a [ 31.795290][ 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 [ 31.795293][ T394] RSP: 002b:00007ffd3664c8d8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 31.795297][ T394] RAX: ffffffffffffffda RBX: 00000000330d59d0 RCX: 00007feb8ab41a4a [ 31.795299][ T394] RDX: 0000000000000062 RSI: 00000000330d55c2 RDI: 0000000000000005 [ 31.795300][ T394] RBP: 00000000330d55c2 R08: 00007ffd3664c8e0 R09: 0000000000000014 [ 31.795302][ T394] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 31.795304][ T394] R13: 0000000000000062 R14: 00007ffd3664c8e0 R15: 0000000000000000 [ 31.795320][ T394] [ 33.345336][ T400] veth3: left promiscuous mode [ 33.412718][ T401] veth3: entered promiscuous mode [ 35.279932][ T410] veth3: left promiscuous mode [ 35.421859][ T418] br0: port 3(veth4) entered disabled state [ 35.529854][ T419] br0: port 2(veth2) entered disabled state [ 35.626658][ T420] br0: port 1(veth1) entered disabled state [ 35.691918][ T421] veth4: left allmulticast mode [ 35.692217][ T421] veth4: left promiscuous mode [ 35.692545][ T421] br0: port 3(veth4) entered disabled state [ 35.695676][ T421] veth2: left allmulticast mode [ 35.695923][ T421] veth2: left promiscuous mode [ 35.696284][ T421] br0: port 2(veth2) entered disabled state [ 35.698515][ T421] veth1: left allmulticast mode [ 35.698718][ T421] veth1: left promiscuous mode [ 35.699037][ T421] br0: port 1(veth1) entered disabled state