[ 193.833480][ T851] br10: port 1(veth1.10) entered blocking state [ 193.833921][ T851] br10: port 1(veth1.10) entered disabled state [ 193.834220][ T851] veth1.10: entered allmulticast mode [ 193.834422][ T851] veth1: entered allmulticast mode [ 193.836689][ T851] veth1.10: entered promiscuous mode [ 193.836903][ T851] veth1: entered promiscuous mode [ 194.318812][ T868] br11: port 1(veth1.11) entered blocking state [ 194.319677][ T868] br11: port 1(veth1.11) entered disabled state [ 194.319971][ T868] veth1.11: entered allmulticast mode [ 194.321957][ T868] veth1.11: entered promiscuous mode [ 195.246682][ T898] br10: port 2(veth2.10) entered blocking state [ 195.246976][ T898] br10: port 2(veth2.10) entered disabled state [ 195.247253][ T898] veth2.10: entered allmulticast mode [ 195.247428][ T898] veth2: entered allmulticast mode [ 195.249308][ T898] veth2.10: entered promiscuous mode [ 195.249497][ T898] veth2: entered promiscuous mode [ 195.770391][ T915] br11: port 2(veth2.11) entered blocking state [ 195.770732][ T915] br11: port 2(veth2.11) entered disabled state [ 195.772133][ T915] veth2.11: entered allmulticast mode [ 195.775410][ T915] veth2.11: entered promiscuous mode [ 196.231407][ T927] br10: port 2(veth2.10) entered blocking state [ 196.231817][ T927] br10: port 2(veth2.10) entered forwarding state [ 196.232537][ T927] br10: port 1(veth1.10) entered blocking state [ 196.232860][ T927] br10: port 1(veth1.10) entered forwarding state [ 196.389072][ T932] br11: port 2(veth2.11) entered blocking state [ 196.389886][ T932] br11: port 2(veth2.11) entered forwarding state [ 196.390644][ T932] br11: port 1(veth1.11) entered blocking state [ 196.391055][ T932] br11: port 1(veth1.11) entered forwarding state [ 205.360841][ T986] [ 205.361203][ T986] ============================= [ 205.361381][ T986] WARNING: suspicious RCU usage [ 205.361638][ T986] 6.14.0-rc6-virtme #1 Not tainted [ 205.361824][ T986] ----------------------------- [ 205.361974][ T986] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 205.362246][ T986] [ 205.362246][ T986] other info that might help us debug this: [ 205.362246][ T986] [ 205.362574][ T986] [ 205.362574][ T986] rcu_scheduler_active = 2, debug_locks = 1 [ 205.362792][ T986] 1 lock held by mausezahn/986: [ 205.362944][ T986] #0: ffffffff9e35b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 205.363235][ T986] [ 205.363235][ T986] stack backtrace: [ 205.363442][ T986] CPU: 1 UID: 0 PID: 986 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1 [ 205.363447][ T986] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 205.363449][ T986] Call Trace: [ 205.363450][ T986] [ 205.363453][ T986] dump_stack_lvl+0xb0/0xd0 [ 205.363461][ T986] lockdep_rcu_suspicious+0x1ea/0x280 [ 205.363471][ T986] dev_hard_start_xmit+0x2fc/0x3f0 [ 205.363481][ T986] __dev_queue_xmit+0xfaf/0x18d0 [ 205.363487][ T986] ? __pfx__copy_from_iter+0x10/0x10 [ 205.363495][ T986] ? __pfx_vlan_parse_protocol+0x10/0x10 [8021q] [ 205.363508][ T986] ? __pfx___dev_queue_xmit+0x10/0x10 [ 205.363512][ T986] ? packet_parse_headers+0x231/0x9c0 [ 205.363520][ T986] ? copy_page_from_iter+0xbd/0x120 [ 205.363525][ T986] ? __pfx_packet_parse_headers+0x10/0x10 [ 205.363529][ T986] ? skb_copy_datagram_from_iter+0x29f/0x6f0 [ 205.363543][ T986] packet_snd+0xd0c/0x19d0 [ 205.363555][ T986] ? __lock_release+0x103/0x460 [ 205.363559][ T986] ? __might_fault+0x11b/0x170 [ 205.363565][ T986] ? __pfx_packet_snd+0x10/0x10 [ 205.363567][ T986] ? trace_lock_acquire+0x14c/0x1f0 [ 205.363570][ T986] ? __might_fault+0x11b/0x170 [ 205.363577][ T986] ? lock_acquire+0x32/0xc0 [ 205.363583][ T986] ? __might_fault+0x11b/0x170 [ 205.363594][ T986] __sys_sendto+0x3c3/0x450 [ 205.363600][ T986] ? __pfx___sys_sendto+0x10/0x10 [ 205.363614][ T986] ? sock_ioctl+0x3b6/0x590 [ 205.363619][ T986] ? __pfx___lock_release+0x10/0x10 [ 205.363627][ T986] ? __pfx___up_read+0x10/0x10 [ 205.363635][ T986] ? do_user_addr_fault+0x972/0xe30 [ 205.363643][ T986] ? do_user_addr_fault+0x97c/0xe30 [ 205.363650][ T986] __x64_sys_sendto+0xe0/0x1c0 [ 205.363654][ T986] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 205.363659][ T986] do_syscall_64+0xc1/0x1d0 [ 205.363666][ T986] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 205.363670][ T986] RIP: 0033:0x7f30bb69ea4a [ 205.363674][ T986] 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 [ 205.363677][ T986] RSP: 002b:00007ffc1a336f88 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 205.363681][ T986] RAX: ffffffffffffffda RBX: 000000000cb2d9d0 RCX: 00007f30bb69ea4a [ 205.363683][ T986] RDX: 0000000000001f6a RSI: 000000000cb308e2 RDI: 0000000000000005 [ 205.363685][ T986] RBP: 000000000cb308e2 R08: 00007ffc1a336f90 R09: 0000000000000014 [ 205.363686][ T986] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 205.363688][ T986] R13: 0000000000001f6a R14: 00007ffc1a336f90 R15: 0000000000000000 [ 205.363704][ T986] [ 277.485593][ T1275] br11: port 2(veth2.11) entered disabled state [ 277.487471][ T1275] br11: port 1(veth1.11) entered disabled state [ 277.591624][ T1277] br10: port 2(veth2.10) entered disabled state [ 277.592132][ T1277] br10: port 1(veth1.10) entered disabled state [ 277.836381][ T1281] veth2.11: left allmulticast mode [ 277.836726][ T1281] veth2.11: left promiscuous mode [ 277.837581][ T1281] br11: port 2(veth2.11) entered disabled state [ 278.163729][ T1289] veth2.10: left allmulticast mode [ 278.163954][ T1289] veth2: left allmulticast mode [ 278.165086][ T1289] veth2.10: left promiscuous mode [ 278.165281][ T1289] veth2: left promiscuous mode [ 278.165775][ T1289] br10: port 2(veth2.10) entered disabled state [ 278.745607][ T1299] veth1.11: left allmulticast mode [ 278.745939][ T1299] veth1.11: left promiscuous mode [ 278.746490][ T1299] br11: port 1(veth1.11) entered disabled state [ 279.144086][ T1305] veth1.10: left allmulticast mode [ 279.144361][ T1305] veth1: left allmulticast mode [ 279.144570][ T1305] veth1.10: left promiscuous mode [ 279.144776][ T1305] veth1: left promiscuous mode [ 279.145309][ T1305] br10: port 1(veth1.10) entered disabled state