[ 12.094882][ T275] ip (275) used greatest stack depth: 23120 bytes left [ 13.843198][ T298] 8021q: 802.1Q VLAN Support v1.8 [ 17.861334][ T345] gre: GRE over IPv4 demultiplexor driver [ 17.875778][ T345] ip_gre: GRE over IPv4 tunneling driver [ 18.968521][ T362] lag: Mode changed to "loadbalance" [ 19.163584][ T365] lag: Port device veth2 added [ 19.475935][ T368] lag: Port device veth4 added [ 19.653063][ T370] 8021q: adding VLAN 0 to HW filter on device lag [ 19.769877][ T371] br1: port 1(lag) entered blocking state [ 19.770272][ T371] br1: port 1(lag) entered disabled state [ 19.770878][ T371] lag: entered allmulticast mode [ 19.771219][ T371] veth2: entered allmulticast mode [ 19.771740][ T371] veth4: entered allmulticast mode [ 19.776466][ T371] veth2: entered promiscuous mode [ 19.776997][ T371] veth4: entered promiscuous mode [ 19.852050][ T372] br1: port 1(lag) entered blocking state [ 19.852580][ T372] br1: port 1(lag) entered forwarding state [ 20.576328][ T382] GACT probability NOT on [ 27.190564][ T409] Mirror/redirect action on [ 37.735023][ T420] [ 37.735300][ T420] ============================= [ 37.735494][ T420] WARNING: suspicious RCU usage [ 37.735683][ T420] 6.14.0-rc6-virtme #1 Not tainted [ 37.735880][ T420] ----------------------------- [ 37.736079][ T420] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 37.736433][ T420] [ 37.736433][ T420] other info that might help us debug this: [ 37.736433][ T420] [ 37.736969][ T420] [ 37.736969][ T420] rcu_scheduler_active = 2, debug_locks = 1 [ 37.737262][ T420] 1 lock held by arping/420: [ 37.737450][ T420] #0: ffffffffae15b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 37.737828][ T420] [ 37.737828][ T420] stack backtrace: [ 37.738057][ T420] CPU: 3 UID: 0 PID: 420 Comm: arping Not tainted 6.14.0-rc6-virtme #1 [ 37.738062][ T420] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 37.738064][ T420] Call Trace: [ 37.738066][ T420] [ 37.738068][ T420] dump_stack_lvl+0xb0/0xd0 [ 37.738077][ T420] lockdep_rcu_suspicious+0x1ea/0x280 [ 37.738088][ T420] dev_hard_start_xmit+0x2fc/0x3f0 [ 37.738101][ T420] __dev_queue_xmit+0xfaf/0x18d0 [ 37.738116][ T420] ? __pfx___dev_queue_xmit+0x10/0x10 [ 37.738123][ T420] ? packet_parse_headers+0x231/0x9c0 [ 37.738136][ T420] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 37.738146][ T420] ? __pfx_packet_parse_headers+0x10/0x10 [ 37.738153][ T420] ? skb_copy_datagram_from_iter+0xe6/0x6f0 [ 37.738158][ T420] ? dev_get_by_index+0xb2/0x190 [ 37.738170][ T420] packet_snd+0xd0c/0x19d0 [ 37.738181][ T420] ? __lock_release+0x103/0x460 [ 37.738185][ T420] ? __might_fault+0x11b/0x170 [ 37.738191][ T420] ? __pfx_packet_snd+0x10/0x10 [ 37.738194][ T420] ? trace_lock_acquire+0x14c/0x1f0 [ 37.738196][ T420] ? __pfx___lock_release+0x10/0x10 [ 37.738203][ T420] ? lock_acquire+0x32/0xc0 [ 37.738212][ T420] ? __might_fault+0x11b/0x170 [ 37.738226][ T420] __sys_sendto+0x3c3/0x450 [ 37.738232][ T420] ? __pfx___sys_sendto+0x10/0x10 [ 37.738243][ T420] ? __lock_release+0x103/0x460 [ 37.738248][ T420] ? __pfx___lock_release+0x10/0x10 [ 37.738257][ T420] ? __pfx___up_read+0x10/0x10 [ 37.738268][ T420] ? do_user_addr_fault+0x374/0xe30 [ 37.738284][ T420] ? do_user_addr_fault+0x374/0xe30 [ 37.738292][ T420] __x64_sys_sendto+0xe0/0x1c0 [ 37.738295][ T420] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 37.738301][ T420] do_syscall_64+0xc1/0x1d0 [ 37.738308][ T420] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 37.738313][ T420] RIP: 0033:0x7f28d8a0aa4a [ 37.738318][ T420] 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 [ 37.738321][ T420] RSP: 002b:00007fffb30d8c88 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 37.738326][ T420] RAX: ffffffffffffffda RBX: 0000000000000100 RCX: 00007f28d8a0aa4a [ 37.738329][ T420] RDX: 000000000000001c RSI: 00007fffb30d8ca0 RDI: 0000000000000005 [ 37.738332][ T420] RBP: 00007fffb30d8df0 R08: 00007fffb30da250 R09: 0000000000000014 [ 37.738335][ T420] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fffb30da528 [ 37.738336][ T420] R13: 00000000004047b4 R14: 0000000000407de0 R15: 00007f28d8b10000 [ 37.738353][ T420] [ 41.942396][ T71] br1: port 1(lag) entered disabled state [ 48.026648][ T416] br1: port 1(lag) entered blocking state [ 48.026934][ T416] br1: port 1(lag) entered forwarding state [ 63.500735][ T71] br1: port 1(lag) entered disabled state [ 69.635320][ T45] br1: port 1(lag) entered blocking state [ 69.635765][ T45] br1: port 1(lag) entered forwarding state [ 70.522228][ T514] lag: left allmulticast mode [ 70.522544][ T514] veth2: left allmulticast mode [ 70.522751][ T514] veth4: left allmulticast mode [ 70.523037][ T514] veth2: left promiscuous mode [ 70.523308][ T514] veth4: left promiscuous mode [ 70.523531][ T514] br1: port 1(lag) entered disabled state [ 70.636992][ T362] lag: Port device veth4 removed [ 70.641278][ T362] lag: Port device veth2 removed