[ 10.700318][ T251] ip (251) used greatest stack depth: 23872 bytes left [ 12.983801][ T307] 8021q: 802.1Q VLAN Support v1.8 [ 16.092689][ T377] GACT probability NOT on [ 17.416570][ T413] br10: port 1(veth1.10) entered blocking state [ 17.417077][ T413] br10: port 1(veth1.10) entered disabled state [ 17.417937][ T413] veth1.10: entered allmulticast mode [ 17.418157][ T413] veth1: entered allmulticast mode [ 17.420382][ T413] veth1.10: entered promiscuous mode [ 17.420612][ T413] veth1: entered promiscuous mode [ 17.909895][ T430] br11: port 1(veth1.11) entered blocking state [ 17.910313][ T430] br11: port 1(veth1.11) entered disabled state [ 17.910670][ T430] veth1.11: entered allmulticast mode [ 17.913039][ T430] veth1.11: entered promiscuous mode [ 18.732675][ T460] br10: port 2(veth2.10) entered blocking state [ 18.733068][ T460] br10: port 2(veth2.10) entered disabled state [ 18.734275][ T460] veth2.10: entered allmulticast mode [ 18.734477][ T460] veth2: entered allmulticast mode [ 18.737118][ T460] veth2.10: entered promiscuous mode [ 18.737336][ T460] veth2: entered promiscuous mode [ 19.187486][ T477] br11: port 2(veth2.11) entered blocking state [ 19.187799][ T477] br11: port 2(veth2.11) entered disabled state [ 19.188103][ T477] veth2.11: entered allmulticast mode [ 19.190567][ T477] veth2.11: entered promiscuous mode [ 19.613180][ T489] br10: port 2(veth2.10) entered blocking state [ 19.613701][ T489] br10: port 2(veth2.10) entered forwarding state [ 19.614580][ T489] br10: port 1(veth1.10) entered blocking state [ 19.614868][ T489] br10: port 1(veth1.10) entered forwarding state [ 19.732014][ T494] br11: port 2(veth2.11) entered blocking state [ 19.732341][ T494] br11: port 2(veth2.11) entered forwarding state [ 19.732797][ T494] br11: port 1(veth1.11) entered blocking state [ 19.733045][ T494] br11: port 1(veth1.11) entered forwarding state [ 28.427409][ T546] [ 28.427733][ T546] ============================= [ 28.427925][ T546] WARNING: suspicious RCU usage [ 28.428240][ T546] 6.14.0-rc6-virtme #1 Not tainted [ 28.428397][ T546] ----------------------------- [ 28.428555][ T546] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 28.428815][ T546] [ 28.428815][ T546] other info that might help us debug this: [ 28.428815][ T546] [ 28.429108][ T546] [ 28.429108][ T546] rcu_scheduler_active = 2, debug_locks = 1 [ 28.429338][ T546] 1 lock held by mausezahn/546: [ 28.429493][ T546] #0: ffffffffa6f5b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 28.429776][ T546] [ 28.429776][ T546] stack backtrace: [ 28.429965][ T546] CPU: 0 UID: 0 PID: 546 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1 [ 28.429969][ T546] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 28.429971][ T546] Call Trace: [ 28.429973][ T546] [ 28.429975][ T546] dump_stack_lvl+0xb0/0xd0 [ 28.429983][ T546] lockdep_rcu_suspicious+0x1ea/0x280 [ 28.429994][ T546] dev_hard_start_xmit+0x2fc/0x3f0 [ 28.430004][ T546] __dev_queue_xmit+0xfaf/0x18d0 [ 28.430009][ T546] ? __pfx__copy_from_iter+0x10/0x10 [ 28.430018][ T546] ? __pfx_vlan_parse_protocol+0x10/0x10 [8021q] [ 28.430030][ T546] ? __pfx___dev_queue_xmit+0x10/0x10 [ 28.430034][ T546] ? packet_parse_headers+0x231/0x9c0 [ 28.430042][ T546] ? copy_page_from_iter+0xbd/0x120 [ 28.430047][ T546] ? __pfx_packet_parse_headers+0x10/0x10 [ 28.430052][ T546] ? skb_copy_datagram_from_iter+0x29f/0x6f0 [ 28.430065][ T546] packet_snd+0xd0c/0x19d0 [ 28.430077][ T546] ? __lock_release+0x103/0x460 [ 28.430080][ T546] ? __might_fault+0x11b/0x170 [ 28.430087][ T546] ? __pfx_packet_snd+0x10/0x10 [ 28.430089][ T546] ? trace_lock_acquire+0x14c/0x1f0 [ 28.430092][ T546] ? __might_fault+0x11b/0x170 [ 28.430099][ T546] ? lock_acquire+0x32/0xc0 [ 28.430105][ T546] ? __might_fault+0x11b/0x170 [ 28.430116][ T546] __sys_sendto+0x3c3/0x450 [ 28.430122][ T546] ? __pfx___sys_sendto+0x10/0x10 [ 28.430136][ T546] ? sock_ioctl+0x3b6/0x590 [ 28.430139][ T546] ? __pfx___lock_release+0x10/0x10 [ 28.430147][ T546] ? __pfx___up_read+0x10/0x10 [ 28.430156][ T546] ? do_user_addr_fault+0x972/0xe30 [ 28.430165][ T546] ? do_user_addr_fault+0x97c/0xe30 [ 28.430171][ T546] __x64_sys_sendto+0xe0/0x1c0 [ 28.430175][ T546] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 28.430180][ T546] do_syscall_64+0xc1/0x1d0 [ 28.430187][ T546] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 28.430192][ T546] RIP: 0033:0x7f575e569a4a [ 28.430196][ T546] 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 [ 28.430198][ T546] RSP: 002b:00007ffea6d9ace8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 28.430202][ T546] RAX: ffffffffffffffda RBX: 000000002a95b9d0 RCX: 00007f575e569a4a [ 28.430204][ T546] RDX: 0000000000001f6a RSI: 000000002a95e8e2 RDI: 0000000000000005 [ 28.430206][ T546] RBP: 000000002a95e8e2 R08: 00007ffea6d9acf0 R09: 0000000000000014 [ 28.430208][ T546] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 28.430209][ T546] R13: 0000000000001f6a R14: 00007ffea6d9acf0 R15: 0000000000000000 [ 28.430228][ T546] [ 46.265140][ T620] br11: port 2(veth2.11) entered disabled state [ 46.266269][ T620] br11: port 1(veth1.11) entered disabled state [ 46.276907][ T620] ip (620) used greatest stack depth: 23776 bytes left [ 46.358126][ T622] br10: port 2(veth2.10) entered disabled state [ 46.358794][ T622] br10: port 1(veth1.10) entered disabled state [ 46.547027][ T626] veth2.11: left allmulticast mode [ 46.547357][ T626] veth2.11: left promiscuous mode [ 46.547895][ T626] br11: port 2(veth2.11) entered disabled state [ 46.879836][ T634] veth2.10: left allmulticast mode [ 46.880075][ T634] veth2: left allmulticast mode [ 46.880303][ T634] veth2.10: left promiscuous mode [ 46.880482][ T634] veth2: left promiscuous mode [ 46.880978][ T634] br10: port 2(veth2.10) entered disabled state [ 47.380681][ T644] veth1.11: left allmulticast mode [ 47.381014][ T644] veth1.11: left promiscuous mode [ 47.381535][ T644] br11: port 1(veth1.11) entered disabled state [ 47.697518][ T650] veth1.10: left allmulticast mode [ 47.697802][ T650] veth1: left allmulticast mode [ 47.698026][ T650] veth1.10: left promiscuous mode [ 47.698604][ T650] veth1: left promiscuous mode [ 47.699117][ T650] br10: port 1(veth1.10) entered disabled state