[ 10.599926][ T250] ip (250) used greatest stack depth: 23248 bytes left [ 12.750580][ T308] 8021q: 802.1Q VLAN Support v1.8 [ 15.821448][ T378] GACT probability NOT on [ 17.098666][ T414] br10: port 1(veth1.10) entered blocking state [ 17.099181][ T414] br10: port 1(veth1.10) entered disabled state [ 17.099724][ T414] veth1.10: entered allmulticast mode [ 17.099917][ T414] veth1: entered allmulticast mode [ 17.104416][ T414] veth1.10: entered promiscuous mode [ 17.104673][ T414] veth1: entered promiscuous mode [ 17.565475][ T431] br11: port 1(veth1.11) entered blocking state [ 17.565784][ T431] br11: port 1(veth1.11) entered disabled state [ 17.566074][ T431] veth1.11: entered allmulticast mode [ 17.569151][ T431] veth1.11: entered promiscuous mode [ 18.360645][ T462] br10: port 2(veth2.10) entered blocking state [ 18.360933][ T462] br10: port 2(veth2.10) entered disabled state [ 18.361215][ T462] veth2.10: entered allmulticast mode [ 18.361395][ T462] veth2: entered allmulticast mode [ 18.363708][ T462] veth2.10: entered promiscuous mode [ 18.363899][ T462] veth2: entered promiscuous mode [ 18.826004][ T479] br11: port 2(veth2.11) entered blocking state [ 18.826317][ T479] br11: port 2(veth2.11) entered disabled state [ 18.826595][ T479] veth2.11: entered allmulticast mode [ 18.835119][ T479] veth2.11: entered promiscuous mode [ 19.229954][ T491] br10: port 2(veth2.10) entered blocking state [ 19.230472][ T491] br10: port 2(veth2.10) entered forwarding state [ 19.231228][ T491] br10: port 1(veth1.10) entered blocking state [ 19.231506][ T491] br10: port 1(veth1.10) entered forwarding state [ 19.351756][ T496] br11: port 2(veth2.11) entered blocking state [ 19.352086][ T496] br11: port 2(veth2.11) entered forwarding state [ 19.352577][ T496] br11: port 1(veth1.11) entered blocking state [ 19.352850][ T496] br11: port 1(veth1.11) entered forwarding state [ 28.367244][ T551] [ 28.367531][ T551] ============================= [ 28.367706][ T551] WARNING: suspicious RCU usage [ 28.367918][ T551] 6.14.0-rc6-virtme #1 Not tainted [ 28.368277][ T551] ----------------------------- [ 28.368445][ T551] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 28.368736][ T551] [ 28.368736][ T551] other info that might help us debug this: [ 28.368736][ T551] [ 28.369054][ T551] [ 28.369054][ T551] rcu_scheduler_active = 2, debug_locks = 1 [ 28.369312][ T551] 1 lock held by mausezahn/551: [ 28.369489][ T551] #0: ffffffff98d5b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 28.369795][ T551] [ 28.369795][ T551] stack backtrace: [ 28.370003][ T551] CPU: 0 UID: 0 PID: 551 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1 [ 28.370007][ T551] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 28.370010][ T551] Call Trace: [ 28.370012][ T551] [ 28.370014][ T551] dump_stack_lvl+0xb0/0xd0 [ 28.370023][ T551] lockdep_rcu_suspicious+0x1ea/0x280 [ 28.370035][ T551] dev_hard_start_xmit+0x2fc/0x3f0 [ 28.370045][ T551] __dev_queue_xmit+0xfaf/0x18d0 [ 28.370050][ T551] ? __pfx__copy_from_iter+0x10/0x10 [ 28.370061][ T551] ? __pfx_vlan_parse_protocol+0x10/0x10 [8021q] [ 28.370073][ T551] ? __pfx___dev_queue_xmit+0x10/0x10 [ 28.370077][ T551] ? packet_parse_headers+0x231/0x9c0 [ 28.370086][ T551] ? copy_page_from_iter+0xbd/0x120 [ 28.370091][ T551] ? __pfx_packet_parse_headers+0x10/0x10 [ 28.370098][ T551] ? skb_copy_datagram_from_iter+0x29f/0x6f0 [ 28.370114][ T551] packet_snd+0xd0c/0x19d0 [ 28.370125][ T551] ? __lock_release+0x103/0x460 [ 28.370130][ T551] ? __might_fault+0x11b/0x170 [ 28.370137][ T551] ? __pfx_packet_snd+0x10/0x10 [ 28.370139][ T551] ? trace_lock_acquire+0x14c/0x1f0 [ 28.370142][ T551] ? __might_fault+0x11b/0x170 [ 28.370149][ T551] ? lock_acquire+0x32/0xc0 [ 28.370155][ T551] ? __might_fault+0x11b/0x170 [ 28.370166][ T551] __sys_sendto+0x3c3/0x450 [ 28.370172][ T551] ? __pfx___sys_sendto+0x10/0x10 [ 28.370187][ T551] ? sock_ioctl+0x3b6/0x590 [ 28.370191][ T551] ? __pfx___lock_release+0x10/0x10 [ 28.370199][ T551] ? __pfx___up_read+0x10/0x10 [ 28.370209][ T551] ? do_user_addr_fault+0x972/0xe30 [ 28.370219][ T551] ? do_user_addr_fault+0x97c/0xe30 [ 28.370226][ T551] __x64_sys_sendto+0xe0/0x1c0 [ 28.370229][ T551] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 28.370234][ T551] do_syscall_64+0xc1/0x1d0 [ 28.370243][ T551] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 28.370249][ T551] RIP: 0033:0x7f3e09d40a4a [ 28.370254][ T551] 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 [ 28.370257][ T551] RSP: 002b:00007ffc02e661c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 28.370260][ T551] RAX: ffffffffffffffda RBX: 000000000b1a29d0 RCX: 00007f3e09d40a4a [ 28.370262][ T551] RDX: 0000000000001f6a RSI: 000000000b1a58e2 RDI: 0000000000000005 [ 28.370264][ T551] RBP: 000000000b1a58e2 R08: 00007ffc02e661d0 R09: 0000000000000014 [ 28.370266][ T551] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 28.370267][ T551] R13: 0000000000001f6a R14: 00007ffc02e661d0 R15: 0000000000000000 [ 28.370283][ T551] [ 99.815859][ T840] br11: port 2(veth2.11) entered disabled state [ 99.816989][ T840] br11: port 1(veth1.11) entered disabled state [ 99.915544][ T842] br10: port 2(veth2.10) entered disabled state [ 99.916223][ T842] br10: port 1(veth1.10) entered disabled state [ 100.105725][ T846] veth2.11: left allmulticast mode [ 100.106044][ T846] veth2.11: left promiscuous mode [ 100.106614][ T846] br11: port 2(veth2.11) entered disabled state [ 100.396772][ T854] veth2.10: left allmulticast mode [ 100.397006][ T854] veth2: left allmulticast mode [ 100.397240][ T854] veth2.10: left promiscuous mode [ 100.397424][ T854] veth2: left promiscuous mode [ 100.397922][ T854] br10: port 2(veth2.10) entered disabled state [ 100.918300][ T864] veth1.11: left allmulticast mode [ 100.918578][ T864] veth1.11: left promiscuous mode [ 100.919087][ T864] br11: port 1(veth1.11) entered disabled state [ 101.239031][ T870] veth1.10: left allmulticast mode [ 101.239293][ T870] veth1: left allmulticast mode [ 101.239490][ T870] veth1.10: left promiscuous mode [ 101.239668][ T870] veth1: left promiscuous mode [ 101.241278][ T870] br10: port 1(veth1.10) entered disabled state