[ 146.882473][ T922] br0: port 1(veth1) entered blocking state [ 146.882745][ T922] br0: port 1(veth1) entered disabled state [ 146.883026][ T922] veth1: entered allmulticast mode [ 146.884954][ T922] veth1: entered promiscuous mode [ 146.981423][ T923] br0: port 2(veth2) entered blocking state [ 146.981727][ T923] br0: port 2(veth2) entered disabled state [ 146.982019][ T923] veth2: entered allmulticast mode [ 146.984075][ T923] veth2: entered promiscuous mode [ 147.146706][ T253] br0: port 1(veth1) entered blocking state [ 147.147053][ T253] br0: port 1(veth1) entered forwarding state [ 147.221600][ T253] br0: port 2(veth2) entered blocking state [ 147.221891][ T253] br0: port 2(veth2) entered forwarding state [ 155.554158][ T971] veth0: entered promiscuous mode [ 155.889383][ T974] [ 155.889741][ T974] ============================= [ 155.890037][ T974] WARNING: suspicious RCU usage [ 155.890291][ T974] 6.14.0-rc6-virtme #1 Not tainted [ 155.890546][ T974] ----------------------------- [ 155.890800][ T974] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 155.891242][ T974] [ 155.891242][ T974] other info that might help us debug this: [ 155.891242][ T974] [ 155.891745][ T974] [ 155.891745][ T974] rcu_scheduler_active = 2, debug_locks = 1 [ 155.892126][ T974] 1 lock held by mausezahn/974: [ 155.892391][ T974] #0: ffffffff8f35b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 155.892789][ T974] [ 155.892789][ T974] stack backtrace: [ 155.893122][ T974] CPU: 2 UID: 0 PID: 974 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1 [ 155.893128][ T974] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 155.893131][ T974] Call Trace: [ 155.893134][ T974] [ 155.893138][ T974] dump_stack_lvl+0xb0/0xd0 [ 155.893156][ T974] lockdep_rcu_suspicious+0x1ea/0x280 [ 155.893174][ T974] dev_hard_start_xmit+0x2fc/0x3f0 [ 155.893195][ T974] __dev_queue_xmit+0xfaf/0x18d0 [ 155.893220][ T974] ? __pfx___dev_queue_xmit+0x10/0x10 [ 155.893232][ T974] ? packet_parse_headers+0x231/0x9c0 [ 155.893248][ T974] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 155.893257][ T974] ? __pfx_packet_parse_headers+0x10/0x10 [ 155.893266][ T974] ? skb_copy_datagram_from_iter+0xe6/0x6f0 [ 155.893275][ T974] ? dev_get_by_index+0xb2/0x190 [ 155.893295][ T974] packet_snd+0xd0c/0x19d0 [ 155.893313][ T974] ? __lock_release+0x103/0x460 [ 155.893319][ T974] ? __might_fault+0x11b/0x170 [ 155.893330][ T974] ? __pfx_packet_snd+0x10/0x10 [ 155.893334][ T974] ? trace_lock_acquire+0x14c/0x1f0 [ 155.893339][ T974] ? __might_fault+0x11b/0x170 [ 155.893351][ T974] ? lock_acquire+0x32/0xc0 [ 155.893360][ T974] ? __might_fault+0x11b/0x170 [ 155.893381][ T974] __sys_sendto+0x3c3/0x450 [ 155.893392][ T974] ? __pfx___sys_sendto+0x10/0x10 [ 155.893421][ T974] ? sock_ioctl+0x3b6/0x590 [ 155.893437][ T974] ? __pfx___up_read+0x10/0x10 [ 155.893449][ T974] ? do_user_addr_fault+0x374/0xe30 [ 155.893466][ T974] ? do_user_addr_fault+0x374/0xe30 [ 155.893480][ T974] __x64_sys_sendto+0xe0/0x1c0 [ 155.893486][ T974] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 155.893494][ T974] do_syscall_64+0xc1/0x1d0 [ 155.893506][ T974] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 155.893514][ T974] RIP: 0033:0x7fdf92fa6a4a [ 155.893520][ T974] 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 [ 155.893524][ T974] RSP: 002b:00007ffc94064048 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 155.893529][ T974] RAX: ffffffffffffffda RBX: 000000001329b9d0 RCX: 00007fdf92fa6a4a [ 155.893532][ T974] RDX: 0000000000000062 RSI: 000000001329b5c2 RDI: 0000000000000005 [ 155.893535][ T974] RBP: 000000001329b5c2 R08: 00007ffc94064050 R09: 0000000000000014 [ 155.893538][ T974] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 155.893540][ T974] R13: 0000000000000062 R14: 00007ffc94064050 R15: 0000000000000000 [ 155.893572][ T974] [ 181.601666][ T1001] veth0: left promiscuous mode [ 181.885958][ T1013] veth3: entered promiscuous mode [ 183.692671][ T1022] veth3: left promiscuous mode [ 183.828675][ T1024] veth3: entered promiscuous mode [ 185.674511][ T1033] veth3: left promiscuous mode [ 185.841678][ T1036] veth3: entered promiscuous mode [ 187.670139][ T1045] veth3: left promiscuous mode [ 187.813901][ T1047] veth3: entered promiscuous mode [ 189.620420][ T1056] veth3: left promiscuous mode [ 213.455819][ T1112] veth3: entered promiscuous mode [ 216.581662][ T1132] veth3: left promiscuous mode [ 216.830708][ T1140] br0: port 2(veth2) entered disabled state [ 216.903728][ T1141] br0: port 1(veth1) entered disabled state [ 216.982776][ T1142] veth2: left allmulticast mode [ 216.983077][ T1142] veth2: left promiscuous mode [ 216.983405][ T1142] br0: port 2(veth2) entered disabled state [ 216.984785][ T1142] veth1: left allmulticast mode [ 216.984996][ T1142] veth1: left promiscuous mode [ 216.985294][ T1142] br0: port 1(veth1) entered disabled state