[ 11.626555][ T251] ip (251) used greatest stack depth: 23496 bytes left [ 14.091719][ T307] 8021q: 802.1Q VLAN Support v1.8 [ 17.338477][ T377] GACT probability NOT on [ 18.653337][ T413] br10: port 1(veth1.10) entered blocking state [ 18.653805][ T413] br10: port 1(veth1.10) entered disabled state [ 18.654191][ T413] veth1.10: entered allmulticast mode [ 18.654392][ T413] veth1: entered allmulticast mode [ 18.656726][ T413] veth1.10: entered promiscuous mode [ 18.656940][ T413] veth1: entered promiscuous mode [ 19.155840][ T430] br11: port 1(veth1.11) entered blocking state [ 19.156192][ T430] br11: port 1(veth1.11) entered disabled state [ 19.156516][ T430] veth1.11: entered allmulticast mode [ 19.158790][ T430] veth1.11: entered promiscuous mode [ 20.000350][ T460] br10: port 2(veth2.10) entered blocking state [ 20.000692][ T460] br10: port 2(veth2.10) entered disabled state [ 20.000986][ T460] veth2.10: entered allmulticast mode [ 20.001177][ T460] veth2: entered allmulticast mode [ 20.003152][ T460] veth2.10: entered promiscuous mode [ 20.004232][ T460] veth2: entered promiscuous mode [ 20.536531][ T477] br11: port 2(veth2.11) entered blocking state [ 20.536895][ T477] br11: port 2(veth2.11) entered disabled state [ 20.537212][ T477] veth2.11: entered allmulticast mode [ 20.539164][ T477] veth2.11: entered promiscuous mode [ 20.947579][ T489] br10: port 2(veth2.10) entered blocking state [ 20.948068][ T489] br10: port 2(veth2.10) entered forwarding state [ 20.948845][ T489] br10: port 1(veth1.10) entered blocking state [ 20.949121][ T489] br10: port 1(veth1.10) entered forwarding state [ 21.069544][ T494] br11: port 2(veth2.11) entered blocking state [ 21.069927][ T494] br11: port 2(veth2.11) entered forwarding state [ 21.070570][ T494] br11: port 1(veth1.11) entered blocking state [ 21.070936][ T494] br11: port 1(veth1.11) entered forwarding state [ 30.077428][ T549] [ 30.077725][ T549] ============================= [ 30.078173][ T549] WARNING: suspicious RCU usage [ 30.078435][ T549] 6.14.0-rc6-virtme #1 Not tainted [ 30.078634][ T549] ----------------------------- [ 30.078827][ T549] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 30.079119][ T549] [ 30.079119][ T549] other info that might help us debug this: [ 30.079119][ T549] [ 30.079457][ T549] [ 30.079457][ T549] rcu_scheduler_active = 2, debug_locks = 1 [ 30.079679][ T549] 1 lock held by mausezahn/549: [ 30.079832][ T549] #0: ffffffffa7d5b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 30.080142][ T549] [ 30.080142][ T549] stack backtrace: [ 30.080359][ T549] CPU: 3 UID: 0 PID: 549 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1 [ 30.080363][ T549] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 30.080365][ T549] Call Trace: [ 30.080367][ T549] [ 30.080370][ T549] dump_stack_lvl+0xb0/0xd0 [ 30.080379][ T549] lockdep_rcu_suspicious+0x1ea/0x280 [ 30.080392][ T549] dev_hard_start_xmit+0x2fc/0x3f0 [ 30.080407][ T549] __dev_queue_xmit+0xfaf/0x18d0 [ 30.080416][ T549] ? __pfx__copy_from_iter+0x10/0x10 [ 30.080431][ T549] ? __pfx_vlan_parse_protocol+0x10/0x10 [8021q] [ 30.080444][ T549] ? __pfx___dev_queue_xmit+0x10/0x10 [ 30.080448][ T549] ? packet_parse_headers+0x231/0x9c0 [ 30.080457][ T549] ? copy_page_from_iter+0xbd/0x120 [ 30.080462][ T549] ? __pfx_packet_parse_headers+0x10/0x10 [ 30.080467][ T549] ? skb_copy_datagram_from_iter+0x29f/0x6f0 [ 30.080482][ T549] packet_snd+0xd0c/0x19d0 [ 30.080494][ T549] ? __lock_release+0x103/0x460 [ 30.080498][ T549] ? __might_fault+0x11b/0x170 [ 30.080505][ T549] ? __pfx_packet_snd+0x10/0x10 [ 30.080507][ T549] ? trace_lock_acquire+0x14c/0x1f0 [ 30.080510][ T549] ? __might_fault+0x11b/0x170 [ 30.080517][ T549] ? lock_acquire+0x32/0xc0 [ 30.080526][ T549] ? __might_fault+0x11b/0x170 [ 30.080545][ T549] __sys_sendto+0x3c3/0x450 [ 30.080552][ T549] ? __pfx___sys_sendto+0x10/0x10 [ 30.080566][ T549] ? sock_ioctl+0x3b6/0x590 [ 30.080572][ T549] ? __pfx___lock_release+0x10/0x10 [ 30.080580][ T549] ? __pfx___up_read+0x10/0x10 [ 30.080591][ T549] ? do_user_addr_fault+0x972/0xe30 [ 30.080602][ T549] ? do_user_addr_fault+0x97c/0xe30 [ 30.080609][ T549] __x64_sys_sendto+0xe0/0x1c0 [ 30.080612][ T549] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 30.080621][ T549] do_syscall_64+0xc1/0x1d0 [ 30.080635][ T549] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 30.080641][ T549] RIP: 0033:0x7f74ff7a9a4a [ 30.080646][ T549] 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 [ 30.080649][ T549] RSP: 002b:00007fff2308edf8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 30.080652][ T549] RAX: ffffffffffffffda RBX: 00000000317df9d0 RCX: 00007f74ff7a9a4a [ 30.080655][ T549] RDX: 0000000000001f6a RSI: 00000000317e28e2 RDI: 0000000000000005 [ 30.080656][ T549] RBP: 00000000317e28e2 R08: 00007fff2308ee00 R09: 0000000000000014 [ 30.080658][ T549] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 30.080660][ T549] R13: 0000000000001f6a R14: 00007fff2308ee00 R15: 0000000000000000 [ 30.080676][ T549] [ 102.137559][ T838] br11: port 2(veth2.11) entered disabled state [ 102.138924][ T838] br11: port 1(veth1.11) entered disabled state [ 102.238585][ T840] br10: port 2(veth2.10) entered disabled state [ 102.239630][ T840] br10: port 1(veth1.10) entered disabled state [ 102.467933][ T844] veth2.11: left allmulticast mode [ 102.468391][ T844] veth2.11: left promiscuous mode [ 102.469249][ T844] br11: port 2(veth2.11) entered disabled state [ 102.821877][ T852] veth2.10: left allmulticast mode [ 102.822118][ T852] veth2: left allmulticast mode [ 102.822700][ T852] veth2.10: left promiscuous mode [ 102.822878][ T852] veth2: left promiscuous mode [ 102.823395][ T852] br10: port 2(veth2.10) entered disabled state [ 103.405226][ T863] veth1.11: left allmulticast mode [ 103.405493][ T863] veth1.11: left promiscuous mode [ 103.406014][ T863] br11: port 1(veth1.11) entered disabled state [ 103.749814][ T869] veth1.10: left allmulticast mode [ 103.750093][ T869] veth1: left allmulticast mode [ 103.750331][ T869] veth1.10: left promiscuous mode [ 103.750531][ T869] veth1: left promiscuous mode [ 103.751139][ T869] br10: port 1(veth1.10) entered disabled state