[ 26.839081][ T442] 8021q: 802.1Q VLAN Support v1.8 [ 29.173991][ T476] br0: port 1(veth1) entered blocking state [ 29.174286][ T476] br0: port 1(veth1) entered disabled state [ 29.175012][ T476] veth1: entered allmulticast mode [ 29.176903][ T476] veth1: entered promiscuous mode [ 29.269859][ T46] br0: port 1(veth1) entered blocking state [ 29.270208][ T46] br0: port 1(veth1) entered forwarding state [ 29.423922][ T479] br0: port 2(veth2) entered blocking state [ 29.424308][ T479] br0: port 2(veth2) entered disabled state [ 29.424612][ T479] veth2: entered allmulticast mode [ 29.426951][ T479] veth2: entered promiscuous mode [ 29.515044][ T40] br0: port 2(veth2) entered blocking state [ 29.515393][ T40] br0: port 2(veth2) entered forwarding state [ 37.164014][ T571] [ 37.164412][ T571] ============================= [ 37.164714][ T571] WARNING: suspicious RCU usage [ 37.164979][ T571] 6.14.0-rc6-virtme #1 Not tainted [ 37.165494][ T571] ----------------------------- [ 37.165761][ T571] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 37.166217][ T571] [ 37.166217][ T571] other info that might help us debug this: [ 37.166217][ T571] [ 37.166719][ T571] [ 37.166719][ T571] rcu_scheduler_active = 2, debug_locks = 1 [ 37.167086][ T571] 1 lock held by mausezahn/571: [ 37.167345][ T571] #0: ffffffffa8d5b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 37.167834][ T571] [ 37.167834][ T571] stack backtrace: [ 37.168141][ T571] CPU: 2 UID: 0 PID: 571 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1 [ 37.168148][ T571] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 37.168151][ T571] Call Trace: [ 37.168153][ T571] [ 37.168157][ T571] dump_stack_lvl+0xb0/0xd0 [ 37.168167][ T571] lockdep_rcu_suspicious+0x1ea/0x280 [ 37.168183][ T571] dev_hard_start_xmit+0x2fc/0x3f0 [ 37.168203][ T571] __dev_queue_xmit+0xfaf/0x18d0 [ 37.168219][ T571] ? __pfx_vlan_parse_protocol+0x10/0x10 [8021q] [ 37.168241][ T571] ? __pfx___dev_queue_xmit+0x10/0x10 [ 37.168248][ T571] ? packet_parse_headers+0x231/0x9c0 [ 37.168263][ T571] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 37.168273][ T571] ? __pfx_packet_parse_headers+0x10/0x10 [ 37.168281][ T571] ? skb_copy_datagram_from_iter+0xe6/0x6f0 [ 37.168290][ T571] ? dev_get_by_index+0xb2/0x190 [ 37.168310][ T571] packet_snd+0xd0c/0x19d0 [ 37.168331][ T571] ? __lock_release+0x103/0x460 [ 37.168336][ T571] ? __might_fault+0x11b/0x170 [ 37.168346][ T571] ? __pfx_packet_snd+0x10/0x10 [ 37.168350][ T571] ? trace_lock_acquire+0x14c/0x1f0 [ 37.168353][ T571] ? __might_fault+0x11b/0x170 [ 37.168366][ T571] ? lock_acquire+0x32/0xc0 [ 37.168377][ T571] ? __might_fault+0x11b/0x170 [ 37.168397][ T571] __sys_sendto+0x3c3/0x450 [ 37.168407][ T571] ? __pfx___sys_sendto+0x10/0x10 [ 37.168433][ T571] ? sock_ioctl+0x3b6/0x590 [ 37.168448][ T571] ? __pfx___up_read+0x10/0x10 [ 37.168460][ T571] ? do_user_addr_fault+0x374/0xe30 [ 37.168475][ T571] ? do_user_addr_fault+0x374/0xe30 [ 37.168487][ T571] __x64_sys_sendto+0xe0/0x1c0 [ 37.168494][ T571] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 37.168503][ T571] do_syscall_64+0xc1/0x1d0 [ 37.168514][ T571] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 37.168521][ T571] RIP: 0033:0x7fad05385a4a [ 37.168527][ T571] 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 [ 37.168532][ T571] RSP: 002b:00007ffc848e3b58 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 37.168537][ T571] RAX: ffffffffffffffda RBX: 00000000272289d0 RCX: 00007fad05385a4a [ 37.168540][ T571] RDX: 0000000000000042 RSI: 0000000027228ca2 RDI: 0000000000000005 [ 37.168543][ T571] RBP: 0000000027228ca2 R08: 00007ffc848e3b60 R09: 0000000000000014 [ 37.168546][ T571] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 37.168549][ T571] R13: 0000000000000042 R14: 00007ffc848e3b60 R15: 0000000000000000 [ 37.168579][ T571] [ 99.801144][ T2262] br0: port 2(veth2) entered disabled state [ 99.901752][ T2263] veth2: left allmulticast mode [ 99.902058][ T2263] veth2: left promiscuous mode [ 99.902379][ T2263] br0: port 2(veth2) entered disabled state [ 99.991288][ T2264] br0: port 1(veth1) entered disabled state [ 100.073937][ T2265] veth1: left allmulticast mode [ 100.074207][ T2265] veth1: left promiscuous mode [ 100.074562][ T2265] br0: port 1(veth1) entered disabled state [ 100.817172][ T2283] br0: port 1(veth1) entered blocking state [ 100.818092][ T2283] br0: port 1(veth1) entered disabled state [ 100.818398][ T2283] veth1: entered allmulticast mode [ 100.820316][ T2283] veth1: entered promiscuous mode [ 100.922520][ T151] br0: port 1(veth1) entered blocking state [ 100.922811][ T151] br0: port 1(veth1) entered forwarding state [ 101.243075][ T2288] br0: port 2(veth2) entered blocking state [ 101.243367][ T2288] br0: port 2(veth2) entered disabled state [ 101.243650][ T2288] veth2: entered allmulticast mode [ 101.245755][ T2288] veth2: entered promiscuous mode [ 101.322231][ T40] br0: port 2(veth2) entered blocking state [ 101.322571][ T40] br0: port 2(veth2) entered forwarding state [ 171.019111][ T4080] br0: port 2(veth2) entered disabled state [ 171.104642][ T4081] veth2: left allmulticast mode [ 171.104903][ T4081] veth2: left promiscuous mode [ 171.105230][ T4081] br0: port 2(veth2) entered disabled state [ 171.171882][ T4082] br0: port 1(veth1) entered disabled state [ 171.248716][ T4083] veth1: left allmulticast mode [ 171.248990][ T4083] veth1: left promiscuous mode [ 171.249319][ T4083] br0: port 1(veth1) entered disabled state [ 171.986643][ T4101] br0: port 1(veth1) entered blocking state [ 171.986998][ T4101] br0: port 1(veth1) entered disabled state [ 171.987264][ T4101] veth1: entered allmulticast mode [ 171.989135][ T4101] veth1: entered promiscuous mode [ 172.065740][ T40] br0: port 1(veth1) entered blocking state [ 172.066024][ T40] br0: port 1(veth1) entered forwarding state [ 172.338533][ T4106] br0: port 2(veth2) entered blocking state [ 172.338889][ T4106] br0: port 2(veth2) entered disabled state [ 172.339147][ T4106] veth2: entered allmulticast mode [ 172.341412][ T4106] veth2: entered promiscuous mode [ 172.425190][ T40] br0: port 2(veth2) entered blocking state [ 172.425488][ T40] br0: port 2(veth2) entered forwarding state [ 316.114069][ T7955] br0: port 2(veth2) entered disabled state [ 316.191787][ T7956] veth2: left allmulticast mode [ 316.192046][ T7956] veth2: left promiscuous mode [ 316.192379][ T7956] br0: port 2(veth2) entered disabled state [ 316.272789][ T7957] br0: port 1(veth1) entered disabled state [ 316.349664][ T7958] veth1: left allmulticast mode [ 316.349934][ T7958] veth1: left promiscuous mode [ 316.350264][ T7958] br0: port 1(veth1) entered disabled state