[ 10.400634][ T250] ip (250) used greatest stack depth: 23776 bytes left [ 12.550609][ T307] 8021q: 802.1Q VLAN Support v1.8 [ 15.555712][ T378] GACT probability NOT on [ 16.780739][ T413] br10: port 1(veth1.10) entered blocking state [ 16.782047][ T413] br10: port 1(veth1.10) entered disabled state [ 16.782986][ T413] veth1.10: entered allmulticast mode [ 16.783183][ T413] veth1: entered allmulticast mode [ 16.786325][ T413] veth1.10: entered promiscuous mode [ 16.786571][ T413] veth1: entered promiscuous mode [ 17.291040][ T430] br11: port 1(veth1.11) entered blocking state [ 17.291319][ T430] br11: port 1(veth1.11) entered disabled state [ 17.291581][ T430] veth1.11: entered allmulticast mode [ 17.293868][ T430] veth1.11: entered promiscuous mode [ 18.031067][ T460] br10: port 2(veth2.10) entered blocking state [ 18.031373][ T460] br10: port 2(veth2.10) entered disabled state [ 18.031632][ T460] veth2.10: entered allmulticast mode [ 18.031823][ T460] veth2: entered allmulticast mode [ 18.033673][ T460] veth2.10: entered promiscuous mode [ 18.033863][ T460] veth2: entered promiscuous mode [ 18.457506][ T477] br11: port 2(veth2.11) entered blocking state [ 18.457781][ T477] br11: port 2(veth2.11) entered disabled state [ 18.458049][ T477] veth2.11: entered allmulticast mode [ 18.460172][ T477] veth2.11: entered promiscuous mode [ 18.827649][ T489] br10: port 2(veth2.10) entered blocking state [ 18.828161][ T489] br10: port 2(veth2.10) entered forwarding state [ 18.828812][ T489] br10: port 1(veth1.10) entered blocking state [ 18.829084][ T489] br10: port 1(veth1.10) entered forwarding state [ 18.941718][ T494] br11: port 2(veth2.11) entered blocking state [ 18.942032][ T494] br11: port 2(veth2.11) entered forwarding state [ 18.942471][ T494] br11: port 1(veth1.11) entered blocking state [ 18.942715][ T494] br11: port 1(veth1.11) entered forwarding state [ 27.869100][ T548] [ 27.869419][ T548] ============================= [ 27.869611][ T548] WARNING: suspicious RCU usage [ 27.869818][ T548] 6.14.0-rc6-virtme #1 Not tainted [ 27.870044][ T548] ----------------------------- [ 27.870227][ T548] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 27.870523][ T548] [ 27.870523][ T548] other info that might help us debug this: [ 27.870523][ T548] [ 27.870863][ T548] [ 27.870863][ T548] rcu_scheduler_active = 2, debug_locks = 1 [ 27.871135][ T548] 1 lock held by mausezahn/548: [ 27.871319][ T548] #0: ffffffffae95b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 27.871643][ T548] [ 27.871643][ T548] stack backtrace: [ 27.871874][ T548] CPU: 2 UID: 0 PID: 548 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1 [ 27.871879][ T548] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 27.871881][ T548] Call Trace: [ 27.871882][ T548] [ 27.871885][ T548] dump_stack_lvl+0xb0/0xd0 [ 27.871891][ T548] lockdep_rcu_suspicious+0x1ea/0x280 [ 27.871902][ T548] dev_hard_start_xmit+0x2fc/0x3f0 [ 27.871912][ T548] __dev_queue_xmit+0xfaf/0x18d0 [ 27.871918][ T548] ? __pfx__copy_from_iter+0x10/0x10 [ 27.871927][ T548] ? __pfx_vlan_parse_protocol+0x10/0x10 [8021q] [ 27.871939][ T548] ? __pfx___dev_queue_xmit+0x10/0x10 [ 27.871946][ T548] ? packet_parse_headers+0x231/0x9c0 [ 27.871954][ T548] ? copy_page_from_iter+0xbd/0x120 [ 27.871959][ T548] ? __pfx_packet_parse_headers+0x10/0x10 [ 27.871964][ T548] ? skb_copy_datagram_from_iter+0x29f/0x6f0 [ 27.871978][ T548] packet_snd+0xd0c/0x19d0 [ 27.871989][ T548] ? __lock_release+0x103/0x460 [ 27.871993][ T548] ? __might_fault+0x11b/0x170 [ 27.872000][ T548] ? __pfx_packet_snd+0x10/0x10 [ 27.872002][ T548] ? trace_lock_acquire+0x14c/0x1f0 [ 27.872005][ T548] ? __might_fault+0x11b/0x170 [ 27.872012][ T548] ? lock_acquire+0x32/0xc0 [ 27.872018][ T548] ? __might_fault+0x11b/0x170 [ 27.872029][ T548] __sys_sendto+0x3c3/0x450 [ 27.872035][ T548] ? __pfx___sys_sendto+0x10/0x10 [ 27.872049][ T548] ? sock_ioctl+0x3b6/0x590 [ 27.872054][ T548] ? __pfx___lock_release+0x10/0x10 [ 27.872061][ T548] ? __pfx___up_read+0x10/0x10 [ 27.872071][ T548] ? do_user_addr_fault+0x972/0xe30 [ 27.872079][ T548] ? do_user_addr_fault+0x97c/0xe30 [ 27.872086][ T548] __x64_sys_sendto+0xe0/0x1c0 [ 27.872090][ T548] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 27.872095][ T548] do_syscall_64+0xc1/0x1d0 [ 27.872103][ T548] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 27.872107][ T548] RIP: 0033:0x7f5b91a8aa4a [ 27.872111][ T548] 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 [ 27.872114][ T548] RSP: 002b:00007ffe9d33f498 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 27.872118][ T548] RAX: ffffffffffffffda RBX: 0000000030a899d0 RCX: 00007f5b91a8aa4a [ 27.872120][ T548] RDX: 0000000000001f6a RSI: 0000000030a8c8e2 RDI: 0000000000000005 [ 27.872121][ T548] RBP: 0000000030a8c8e2 R08: 00007ffe9d33f4a0 R09: 0000000000000014 [ 27.872123][ T548] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 27.872125][ T548] R13: 0000000000001f6a R14: 00007ffe9d33f4a0 R15: 0000000000000000 [ 27.872140][ T548] [ 99.208697][ T837] br11: port 2(veth2.11) entered disabled state [ 99.209697][ T837] br11: port 1(veth1.11) entered disabled state [ 99.295552][ T839] br10: port 2(veth2.10) entered disabled state [ 99.296375][ T839] br10: port 1(veth1.10) entered disabled state [ 99.489498][ T843] veth2.11: left allmulticast mode [ 99.489806][ T843] veth2.11: left promiscuous mode [ 99.491117][ T843] br11: port 2(veth2.11) entered disabled state [ 99.498538][ T843] ip (843) used greatest stack depth: 23640 bytes left [ 99.806389][ T851] veth2.10: left allmulticast mode [ 99.806664][ T851] veth2: left allmulticast mode [ 99.806880][ T851] veth2.10: left promiscuous mode [ 99.807093][ T851] veth2: left promiscuous mode [ 99.807596][ T851] br10: port 2(veth2.10) entered disabled state [ 100.299994][ T862] veth1.11: left allmulticast mode [ 100.300259][ T862] veth1.11: left promiscuous mode [ 100.300757][ T862] br11: port 1(veth1.11) entered disabled state [ 100.584261][ T868] veth1.10: left allmulticast mode [ 100.584490][ T868] veth1: left allmulticast mode [ 100.584680][ T868] veth1.10: left promiscuous mode [ 100.584860][ T868] veth1: left promiscuous mode [ 100.585709][ T868] br10: port 1(veth1.10) entered disabled state