[ 11.519510][ T251] ip (251) used greatest stack depth: 23424 bytes left [ 13.745006][ T308] 8021q: 802.1Q VLAN Support v1.8 [ 16.932050][ T378] GACT probability NOT on [ 18.331192][ T413] br10: port 1(veth1.10) entered blocking state [ 18.331665][ T413] br10: port 1(veth1.10) entered disabled state [ 18.332076][ T413] veth1.10: entered allmulticast mode [ 18.332303][ T413] veth1: entered allmulticast mode [ 18.334407][ T413] veth1.10: entered promiscuous mode [ 18.334725][ T413] veth1: entered promiscuous mode [ 18.830018][ T430] br11: port 1(veth1.11) entered blocking state [ 18.831189][ T430] br11: port 1(veth1.11) entered disabled state [ 18.831500][ T430] veth1.11: entered allmulticast mode [ 18.833498][ T430] veth1.11: entered promiscuous mode [ 19.709956][ T460] br10: port 2(veth2.10) entered blocking state [ 19.710260][ T460] br10: port 2(veth2.10) entered disabled state [ 19.710543][ T460] veth2.10: entered allmulticast mode [ 19.710721][ T460] veth2: entered allmulticast mode [ 19.713322][ T460] veth2.10: entered promiscuous mode [ 19.713577][ T460] veth2: entered promiscuous mode [ 20.275934][ T477] br11: port 2(veth2.11) entered blocking state [ 20.276528][ T477] br11: port 2(veth2.11) entered disabled state [ 20.277101][ T477] veth2.11: entered allmulticast mode [ 20.280624][ T477] veth2.11: entered promiscuous mode [ 20.734157][ T489] br10: port 2(veth2.10) entered blocking state [ 20.735208][ T489] br10: port 2(veth2.10) entered forwarding state [ 20.736477][ T489] br10: port 1(veth1.10) entered blocking state [ 20.736959][ T489] br10: port 1(veth1.10) entered forwarding state [ 20.877990][ T494] br11: port 2(veth2.11) entered blocking state [ 20.878311][ T494] br11: port 2(veth2.11) entered forwarding state [ 20.878765][ T494] br11: port 1(veth1.11) entered blocking state [ 20.879011][ T494] br11: port 1(veth1.11) entered forwarding state [ 29.573683][ T545] [ 29.574002][ T545] ============================= [ 29.574199][ T545] WARNING: suspicious RCU usage [ 29.574430][ T545] 6.14.0-rc6-virtme #1 Not tainted [ 29.574604][ T545] ----------------------------- [ 29.574814][ T545] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 29.575163][ T545] [ 29.575163][ T545] other info that might help us debug this: [ 29.575163][ T545] [ 29.575568][ T545] [ 29.575568][ T545] rcu_scheduler_active = 2, debug_locks = 1 [ 29.575868][ T545] 1 lock held by mausezahn/545: [ 29.576099][ T545] #0: ffffffff86d5b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 29.576512][ T545] [ 29.576512][ T545] stack backtrace: [ 29.576719][ T545] CPU: 1 UID: 0 PID: 545 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1 [ 29.576724][ T545] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 29.576726][ T545] Call Trace: [ 29.576727][ T545] [ 29.576730][ T545] dump_stack_lvl+0xb0/0xd0 [ 29.576737][ T545] lockdep_rcu_suspicious+0x1ea/0x280 [ 29.576747][ T545] dev_hard_start_xmit+0x2fc/0x3f0 [ 29.576758][ T545] __dev_queue_xmit+0xfaf/0x18d0 [ 29.576763][ T545] ? __pfx__copy_from_iter+0x10/0x10 [ 29.576772][ T545] ? __pfx_vlan_parse_protocol+0x10/0x10 [8021q] [ 29.576785][ T545] ? __pfx___dev_queue_xmit+0x10/0x10 [ 29.576789][ T545] ? packet_parse_headers+0x231/0x9c0 [ 29.576797][ T545] ? copy_page_from_iter+0xbd/0x120 [ 29.576802][ T545] ? __pfx_packet_parse_headers+0x10/0x10 [ 29.576806][ T545] ? skb_copy_datagram_from_iter+0x29f/0x6f0 [ 29.576821][ T545] packet_snd+0xd0c/0x19d0 [ 29.576833][ T545] ? __lock_release+0x103/0x460 [ 29.576837][ T545] ? __might_fault+0x11b/0x170 [ 29.576844][ T545] ? __pfx_packet_snd+0x10/0x10 [ 29.576846][ T545] ? trace_lock_acquire+0x14c/0x1f0 [ 29.576848][ T545] ? __might_fault+0x11b/0x170 [ 29.576855][ T545] ? lock_acquire+0x32/0xc0 [ 29.576861][ T545] ? __might_fault+0x11b/0x170 [ 29.576873][ T545] __sys_sendto+0x3c3/0x450 [ 29.576879][ T545] ? __pfx___sys_sendto+0x10/0x10 [ 29.576893][ T545] ? sock_ioctl+0x3b6/0x590 [ 29.576898][ T545] ? __pfx___lock_release+0x10/0x10 [ 29.576905][ T545] ? __pfx___up_read+0x10/0x10 [ 29.576914][ T545] ? do_user_addr_fault+0x972/0xe30 [ 29.576923][ T545] ? do_user_addr_fault+0x97c/0xe30 [ 29.576930][ T545] __x64_sys_sendto+0xe0/0x1c0 [ 29.576934][ T545] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 29.576939][ T545] do_syscall_64+0xc1/0x1d0 [ 29.576946][ T545] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 29.576951][ T545] RIP: 0033:0x7f38b2298a4a [ 29.576955][ T545] 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 [ 29.576958][ T545] RSP: 002b:00007ffdca7bdb88 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 29.576963][ T545] RAX: ffffffffffffffda RBX: 000000002bf059d0 RCX: 00007f38b2298a4a [ 29.576966][ T545] RDX: 0000000000001f6a RSI: 000000002bf088e2 RDI: 0000000000000005 [ 29.576968][ T545] RBP: 000000002bf088e2 R08: 00007ffdca7bdb90 R09: 0000000000000014 [ 29.576971][ T545] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 29.576974][ T545] R13: 0000000000001f6a R14: 00007ffdca7bdb90 R15: 0000000000000000 [ 29.576998][ T545] [ 47.409354][ T619] br11: port 2(veth2.11) entered disabled state [ 47.410764][ T619] br11: port 1(veth1.11) entered disabled state [ 47.497710][ T621] br10: port 2(veth2.10) entered disabled state [ 47.498773][ T621] br10: port 1(veth1.10) entered disabled state [ 47.714009][ T625] veth2.11: left allmulticast mode [ 47.714887][ T625] veth2.11: left promiscuous mode [ 47.715479][ T625] br11: port 2(veth2.11) entered disabled state [ 48.067832][ T633] veth2.10: left allmulticast mode [ 48.068183][ T633] veth2: left allmulticast mode [ 48.068482][ T633] veth2.10: left promiscuous mode [ 48.068742][ T633] veth2: left promiscuous mode [ 48.069522][ T633] br10: port 2(veth2.10) entered disabled state [ 48.582777][ T644] veth1.11: left allmulticast mode [ 48.583427][ T644] veth1.11: left promiscuous mode [ 48.583960][ T644] br11: port 1(veth1.11) entered disabled state [ 48.914000][ T650] veth1.10: left allmulticast mode [ 48.914291][ T650] veth1: left allmulticast mode [ 48.914515][ T650] veth1.10: left promiscuous mode [ 48.914695][ T650] veth1: left promiscuous mode [ 48.915226][ T650] br10: port 1(veth1.10) entered disabled state