[ 15.296667][ T293] 8021q: 802.1Q VLAN Support v1.8 [ 18.059738][ T329] br0: port 1(veth1) entered blocking state [ 18.060250][ T329] br0: port 1(veth1) entered disabled state [ 18.060701][ T329] veth1: entered allmulticast mode [ 18.063156][ T329] veth1: entered promiscuous mode [ 18.164434][ T38] br0: port 1(veth1) entered blocking state [ 18.164901][ T38] br0: port 1(veth1) entered forwarding state [ 18.357085][ T332] br0: port 2(veth2) entered blocking state [ 18.357810][ T332] br0: port 2(veth2) entered disabled state [ 18.358186][ T332] veth2: entered allmulticast mode [ 18.361616][ T332] veth2: entered promiscuous mode [ 18.442934][ T41] br0: port 2(veth2) entered blocking state [ 18.443237][ T41] br0: port 2(veth2) entered forwarding state [ 26.373363][ T425] [ 26.373674][ T425] ============================= [ 26.373858][ T425] WARNING: suspicious RCU usage [ 26.374042][ T425] 6.14.0-rc6-virtme #1 Not tainted [ 26.374221][ T425] ----------------------------- [ 26.374567][ T425] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 26.374863][ T425] [ 26.374863][ T425] other info that might help us debug this: [ 26.374863][ T425] [ 26.375232][ T425] [ 26.375232][ T425] rcu_scheduler_active = 2, debug_locks = 1 [ 26.375505][ T425] 1 lock held by mausezahn/425: [ 26.375679][ T425] #0: ffffffff9af5b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 26.376004][ T425] [ 26.376004][ T425] stack backtrace: [ 26.376279][ T425] CPU: 3 UID: 0 PID: 425 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1 [ 26.376284][ T425] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 26.376286][ T425] Call Trace: [ 26.376288][ T425] [ 26.376290][ T425] dump_stack_lvl+0xb0/0xd0 [ 26.376299][ T425] lockdep_rcu_suspicious+0x1ea/0x280 [ 26.376312][ T425] dev_hard_start_xmit+0x2fc/0x3f0 [ 26.376323][ T425] __dev_queue_xmit+0xfaf/0x18d0 [ 26.376334][ T425] ? __pfx_vlan_parse_protocol+0x10/0x10 [8021q] [ 26.376354][ T425] ? __pfx___dev_queue_xmit+0x10/0x10 [ 26.376360][ T425] ? packet_parse_headers+0x231/0x9c0 [ 26.376369][ T425] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 26.376376][ T425] ? __pfx_packet_parse_headers+0x10/0x10 [ 26.376381][ T425] ? skb_copy_datagram_from_iter+0xe6/0x6f0 [ 26.376387][ T425] ? dev_get_by_index+0xb2/0x190 [ 26.376400][ T425] packet_snd+0xd0c/0x19d0 [ 26.376411][ T425] ? __lock_release+0x103/0x460 [ 26.376415][ T425] ? __might_fault+0x11b/0x170 [ 26.376424][ T425] ? __pfx_packet_snd+0x10/0x10 [ 26.376427][ T425] ? trace_lock_acquire+0x14c/0x1f0 [ 26.376429][ T425] ? __might_fault+0x11b/0x170 [ 26.376436][ T425] ? lock_acquire+0x32/0xc0 [ 26.376442][ T425] ? __might_fault+0x11b/0x170 [ 26.376453][ T425] __sys_sendto+0x3c3/0x450 [ 26.376460][ T425] ? __pfx___sys_sendto+0x10/0x10 [ 26.376474][ T425] ? sock_ioctl+0x3b6/0x590 [ 26.376485][ T425] ? __pfx___up_read+0x10/0x10 [ 26.376495][ T425] ? do_user_addr_fault+0x374/0xe30 [ 26.376507][ T425] ? do_user_addr_fault+0x374/0xe30 [ 26.376514][ T425] __x64_sys_sendto+0xe0/0x1c0 [ 26.376518][ T425] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 26.376523][ T425] do_syscall_64+0xc1/0x1d0 [ 26.376532][ T425] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 26.376538][ T425] RIP: 0033:0x7f3a34772a4a [ 26.376542][ T425] 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 [ 26.376545][ T425] RSP: 002b:00007ffe7445a9e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 26.376548][ T425] RAX: ffffffffffffffda RBX: 00000000119ea9d0 RCX: 00007f3a34772a4a [ 26.376551][ T425] RDX: 0000000000000042 RSI: 00000000119eaca2 RDI: 0000000000000005 [ 26.376553][ T425] RBP: 00000000119eaca2 R08: 00007ffe7445a9f0 R09: 0000000000000014 [ 26.376555][ T425] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 26.376557][ T425] R13: 0000000000000042 R14: 00007ffe7445a9f0 R15: 0000000000000000 [ 26.376572][ T425] [ 92.146062][ T2116] br0: port 2(veth2) entered disabled state [ 92.225454][ T2118] veth2: left allmulticast mode [ 92.225697][ T2118] veth2: left promiscuous mode [ 92.226081][ T2118] br0: port 2(veth2) entered disabled state [ 92.321531][ T2119] br0: port 1(veth1) entered disabled state [ 92.396302][ T2120] veth1: left allmulticast mode [ 92.396538][ T2120] veth1: left promiscuous mode [ 92.396858][ T2120] br0: port 1(veth1) entered disabled state [ 93.248323][ T2138] br0: port 1(veth1) entered blocking state [ 93.248614][ T2138] br0: port 1(veth1) entered disabled state [ 93.248882][ T2138] veth1: entered allmulticast mode [ 93.251357][ T2138] veth1: entered promiscuous mode [ 93.332323][ T38] br0: port 1(veth1) entered blocking state [ 93.332738][ T38] br0: port 1(veth1) entered forwarding state [ 93.666997][ T2143] br0: port 2(veth2) entered blocking state [ 93.667439][ T2143] br0: port 2(veth2) entered disabled state [ 93.667861][ T2143] veth2: entered allmulticast mode [ 93.670064][ T2143] veth2: entered promiscuous mode [ 93.758943][ T57] br0: port 2(veth2) entered blocking state [ 93.759303][ T57] br0: port 2(veth2) entered forwarding state [ 165.677854][ T3935] br0: port 2(veth2) entered disabled state [ 165.749579][ T3936] veth2: left allmulticast mode [ 165.749819][ T3936] veth2: left promiscuous mode [ 165.750243][ T3936] br0: port 2(veth2) entered disabled state [ 165.860421][ T3937] br0: port 1(veth1) entered disabled state [ 165.947497][ T3938] veth1: left allmulticast mode [ 165.947858][ T3938] veth1: left promiscuous mode [ 165.948779][ T3938] br0: port 1(veth1) entered disabled state [ 166.789565][ T3956] br0: port 1(veth1) entered blocking state [ 166.789849][ T3956] br0: port 1(veth1) entered disabled state [ 166.790551][ T3956] veth1: entered allmulticast mode [ 166.792427][ T3956] veth1: entered promiscuous mode [ 166.888103][ T2117] br0: port 1(veth1) entered blocking state [ 166.888667][ T2117] br0: port 1(veth1) entered forwarding state [ 167.203038][ T3961] br0: port 2(veth2) entered blocking state [ 167.203323][ T3961] br0: port 2(veth2) entered disabled state [ 167.203597][ T3961] veth2: entered allmulticast mode [ 167.205556][ T3961] veth2: entered promiscuous mode [ 167.282008][ T70] br0: port 2(veth2) entered blocking state [ 167.282316][ T70] br0: port 2(veth2) entered forwarding state [ 318.236511][ T7810] br0: port 2(veth2) entered disabled state [ 318.315062][ T7811] veth2: left allmulticast mode [ 318.315502][ T7811] veth2: left promiscuous mode [ 318.316028][ T7811] br0: port 2(veth2) entered disabled state [ 318.442039][ T7812] br0: port 1(veth1) entered disabled state [ 318.509223][ T7813] veth1: left allmulticast mode [ 318.509454][ T7813] veth1: left promiscuous mode [ 318.509768][ T7813] br0: port 1(veth1) entered disabled state [ 318.610893][ T7814] ip (7814) used greatest stack depth: 23856 bytes left