[ 17.117317][ T362] ip (362) used greatest stack depth: 24112 bytes left [ 17.258454][ T369] br: port 1(veth1) entered blocking state [ 17.258886][ T369] br: port 1(veth1) entered disabled state [ 17.259261][ T369] veth1: entered allmulticast mode [ 17.261430][ T369] veth1: entered promiscuous mode [ 17.270729][ T68] br: port 1(veth1) entered blocking state [ 17.271112][ T68] br: port 1(veth1) entered forwarding state [ 17.410830][ T375] br: port 2(veth3) entered blocking state [ 17.411773][ T375] br: port 2(veth3) entered disabled state [ 17.412038][ T375] veth3: entered allmulticast mode [ 17.413936][ T375] veth3: entered promiscuous mode [ 17.415366][ T68] br: port 2(veth3) entered blocking state [ 17.415696][ T68] br: port 2(veth3) entered forwarding state [ 17.547015][ T380] br: port 3(veth4) entered blocking state [ 17.547867][ T380] br: port 3(veth4) entered disabled state [ 17.548343][ T380] veth4: entered allmulticast mode [ 17.551616][ T380] veth4: entered promiscuous mode [ 17.553579][ T68] br: port 3(veth4) entered blocking state [ 17.553998][ T68] br: port 3(veth4) entered forwarding state [ 28.878645][ T468] [ 28.878986][ T468] ============================= [ 28.879263][ T468] WARNING: suspicious RCU usage [ 28.879518][ T468] 6.14.0-rc6-virtme #1 Not tainted [ 28.879799][ T468] ----------------------------- [ 28.880038][ T468] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 28.880468][ T468] [ 28.880468][ T468] other info that might help us debug this: [ 28.880468][ T468] [ 28.880946][ T468] [ 28.880946][ T468] rcu_scheduler_active = 2, debug_locks = 1 [ 28.881330][ T468] 1 lock held by mausezahn/468: [ 28.881574][ T468] #0: ffffffff99d5b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 28.882013][ T468] [ 28.882013][ T468] stack backtrace: [ 28.882324][ T468] CPU: 3 UID: 0 PID: 468 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1 [ 28.882332][ T468] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 28.882335][ T468] Call Trace: [ 28.882337][ T468] [ 28.882341][ T468] dump_stack_lvl+0xb0/0xd0 [ 28.882352][ T468] lockdep_rcu_suspicious+0x1ea/0x280 [ 28.882367][ T468] dev_hard_start_xmit+0x2fc/0x3f0 [ 28.882388][ T468] sch_direct_xmit+0x1e0/0xa60 [ 28.882406][ T468] ? __pfx_sch_direct_xmit+0x10/0x10 [ 28.882436][ T468] __qdisc_run+0x1b9/0x3b0 [ 28.882444][ T468] ? __lock_acquire+0xb9a/0x1680 [ 28.882452][ T468] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 28.882461][ T468] ? __pfx___qdisc_run+0x10/0x10 [ 28.882473][ T468] ? tbf_enqueue+0x21e/0x7b0 [sch_tbf] [ 28.882483][ T468] ? lock_acquire+0x32/0xc0 [ 28.882488][ T468] ? __dev_xmit_skb+0x301/0x10b0 [ 28.882507][ T468] __dev_xmit_skb+0x4a5/0x10b0 [ 28.882515][ T468] ? lock_sync+0xd0/0x180 [ 28.882526][ T468] ? __pfx___dev_xmit_skb+0x10/0x10 [ 28.882537][ T468] ? lock_acquire+0x32/0xc0 [ 28.882541][ T468] ? __dev_queue_xmit+0x1f0/0x18d0 [ 28.882555][ T468] __dev_queue_xmit+0x784/0x18d0 [ 28.882576][ T468] ? __pfx___dev_queue_xmit+0x10/0x10 [ 28.882582][ T468] ? packet_parse_headers+0x231/0x9c0 [ 28.882596][ T468] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 28.882604][ T468] ? __pfx_packet_parse_headers+0x10/0x10 [ 28.882611][ T468] ? skb_copy_datagram_from_iter+0xe6/0x6f0 [ 28.882619][ T468] ? dev_get_by_index+0xb2/0x190 [ 28.882640][ T468] packet_snd+0xd0c/0x19d0 [ 28.882662][ T468] ? __lock_release+0x103/0x460 [ 28.882667][ T468] ? __might_fault+0x11b/0x170 [ 28.882679][ T468] ? __pfx_packet_snd+0x10/0x10 [ 28.882682][ T468] ? trace_lock_acquire+0x14c/0x1f0 [ 28.882686][ T468] ? __might_fault+0x11b/0x170 [ 28.882696][ T468] ? lock_acquire+0x32/0xc0 [ 28.882706][ T468] ? __might_fault+0x11b/0x170 [ 28.882725][ T468] __sys_sendto+0x3c3/0x450 [ 28.882735][ T468] ? __pfx___sys_sendto+0x10/0x10 [ 28.882764][ T468] ? sock_ioctl+0x3b6/0x590 [ 28.882782][ T468] ? __pfx___up_read+0x10/0x10 [ 28.882796][ T468] ? do_user_addr_fault+0x374/0xe30 [ 28.882814][ T468] ? do_user_addr_fault+0x374/0xe30 [ 28.882825][ T468] __x64_sys_sendto+0xe0/0x1c0 [ 28.882830][ T468] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 28.882837][ T468] do_syscall_64+0xc1/0x1d0 [ 28.882848][ T468] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 28.882854][ T468] RIP: 0033:0x7f492820ca4a [ 28.882860][ T468] 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 [ 28.882864][ T468] RSP: 002b:00007ffe3b0eefa8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 28.882869][ T468] RAX: ffffffffffffffda RBX: 0000000000eff9d0 RCX: 00007f492820ca4a [ 28.882873][ T468] RDX: 00000000000005ae RSI: 0000000000f00252 RDI: 0000000000000005 [ 28.882875][ T468] RBP: 0000000000f00252 R08: 00007ffe3b0eefb0 R09: 0000000000000014 [ 28.882878][ T468] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 28.882881][ T468] R13: 00000000000005ae R14: 00007ffe3b0eefb0 R15: 0000000000000000 [ 28.882904][ T468] [ 111.536085][ T806] Mirror/redirect action on [ 147.533291][ T971] ip (971) used greatest stack depth: 23552 bytes left [ 148.129571][ T983] br: port 3(veth4) entered disabled state [ 148.131083][ T983] veth4: left allmulticast mode [ 148.131665][ T983] veth4: left promiscuous mode [ 148.132039][ T983] br: port 3(veth4) entered disabled state [ 148.233768][ T985] br: port 2(veth3) entered disabled state [ 148.234691][ T985] veth3: left allmulticast mode [ 148.234927][ T985] veth3: left promiscuous mode [ 148.235659][ T985] br: port 2(veth3) entered disabled state [ 148.339374][ T987] br: port 1(veth1) entered disabled state [ 148.340281][ T987] veth1: left allmulticast mode [ 148.340511][ T987] veth1: left promiscuous mode [ 148.340835][ T987] br: port 1(veth1) entered disabled state