[ 136.289908][ T1273] br1: port 1(veth1) entered blocking state [ 136.290804][ T1273] br1: port 1(veth1) entered disabled state [ 136.291109][ T1273] veth1: entered allmulticast mode [ 136.293048][ T1273] veth1: entered promiscuous mode [ 136.456428][ T1276] br1: port 2(veth2) entered blocking state [ 136.456738][ T1276] br1: port 2(veth2) entered disabled state [ 136.457028][ T1276] veth2: entered allmulticast mode [ 136.458937][ T1276] veth2: entered promiscuous mode [ 136.626027][ T1278] br1: port 2(veth2) entered blocking state [ 136.626569][ T1278] br1: port 2(veth2) entered forwarding state [ 136.627432][ T1278] br1: port 1(veth1) entered blocking state [ 136.627847][ T1278] br1: port 1(veth1) entered forwarding state [ 142.850115][ T1303] GACT probability NOT on [ 143.113986][ T1306] [ 143.114333][ T1306] ============================= [ 143.114511][ T1306] WARNING: suspicious RCU usage [ 143.114671][ T1306] 6.14.0-rc6-virtme #1 Not tainted [ 143.114836][ T1306] ----------------------------- [ 143.114998][ T1306] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 143.115295][ T1306] [ 143.115295][ T1306] other info that might help us debug this: [ 143.115295][ T1306] [ 143.115607][ T1306] [ 143.115607][ T1306] rcu_scheduler_active = 2, debug_locks = 1 [ 143.115830][ T1306] 1 lock held by mausezahn/1306: [ 143.115990][ T1306] #0: ffffffff8df5b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 143.116285][ T1306] [ 143.116285][ T1306] stack backtrace: [ 143.116480][ T1306] CPU: 0 UID: 0 PID: 1306 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1 [ 143.116485][ T1306] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 143.116487][ T1306] Call Trace: [ 143.116489][ T1306] [ 143.116492][ T1306] dump_stack_lvl+0xb0/0xd0 [ 143.116501][ T1306] lockdep_rcu_suspicious+0x1ea/0x280 [ 143.116513][ T1306] dev_hard_start_xmit+0x2fc/0x3f0 [ 143.116523][ T1306] __dev_queue_xmit+0xfaf/0x18d0 [ 143.116537][ T1306] ? __pfx___dev_queue_xmit+0x10/0x10 [ 143.116542][ T1306] ? packet_parse_headers+0x231/0x9c0 [ 143.116551][ T1306] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 143.116558][ T1306] ? __pfx_packet_parse_headers+0x10/0x10 [ 143.116562][ T1306] ? skb_copy_datagram_from_iter+0xe6/0x6f0 [ 143.116568][ T1306] ? dev_get_by_index+0xb2/0x190 [ 143.116581][ T1306] packet_snd+0xd0c/0x19d0 [ 143.116593][ T1306] ? __lock_release+0x103/0x460 [ 143.116596][ T1306] ? __might_fault+0x11b/0x170 [ 143.116604][ T1306] ? __pfx_packet_snd+0x10/0x10 [ 143.116607][ T1306] ? trace_lock_acquire+0x14c/0x1f0 [ 143.116609][ T1306] ? __might_fault+0x11b/0x170 [ 143.116616][ T1306] ? lock_acquire+0x32/0xc0 [ 143.116622][ T1306] ? __might_fault+0x11b/0x170 [ 143.116633][ T1306] __sys_sendto+0x3c3/0x450 [ 143.116640][ T1306] ? __pfx___sys_sendto+0x10/0x10 [ 143.116655][ T1306] ? sock_ioctl+0x3b6/0x590 [ 143.116666][ T1306] ? __pfx___up_read+0x10/0x10 [ 143.116675][ T1306] ? do_user_addr_fault+0x374/0xe30 [ 143.116686][ T1306] ? do_user_addr_fault+0x374/0xe30 [ 143.116693][ T1306] __x64_sys_sendto+0xe0/0x1c0 [ 143.116698][ T1306] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 143.116703][ T1306] do_syscall_64+0xc1/0x1d0 [ 143.116712][ T1306] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 143.116717][ T1306] RIP: 0033:0x7faa48368a4a [ 143.116722][ T1306] 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 [ 143.116725][ T1306] RSP: 002b:00007fffbd686028 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 143.116729][ T1306] RAX: ffffffffffffffda RBX: 00000000264289d0 RCX: 00007faa48368a4a [ 143.116731][ T1306] RDX: 000000000000008e RSI: 0000000026428cf2 RDI: 0000000000000005 [ 143.116732][ T1306] RBP: 0000000026428cf2 R08: 00007fffbd686030 R09: 0000000000000014 [ 143.116734][ T1306] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 143.116736][ T1306] R13: 000000000000008e R14: 00007fffbd686030 R15: 0000000000000000 [ 143.116752][ T1306] [ 157.689434][ T1593] br1: port 2(veth2) entered disabled state [ 157.690606][ T1593] br1: port 1(veth1) entered disabled state [ 157.701237][ T1593] ip (1593) used greatest stack depth: 23712 bytes left [ 157.870929][ T1595] veth2: left allmulticast mode [ 157.871219][ T1595] veth2: left promiscuous mode [ 157.871529][ T1595] br1: port 2(veth2) entered disabled state [ 158.041095][ T1597] veth1: left allmulticast mode [ 158.041457][ T1597] veth1: left promiscuous mode [ 158.041935][ T1597] br1: port 1(veth1) entered disabled state