[ 12.548776][ T296] 8021q: 802.1Q VLAN Support v1.8 [ 16.168208][ T345] gre: GRE over IPv4 demultiplexor driver [ 16.180095][ T345] ip_gre: GRE over IPv4 tunneling driver [ 17.181444][ T362] lag: Mode changed to "loadbalance" [ 17.420056][ T365] lag: Port device veth2 added [ 17.642124][ T369] lag: Port device veth4 added [ 17.795442][ T371] 8021q: adding VLAN 0 to HW filter on device lag [ 17.866778][ T372] br1: port 1(lag) entered blocking state [ 17.867079][ T372] br1: port 1(lag) entered disabled state [ 17.867443][ T372] lag: entered allmulticast mode [ 17.867679][ T372] veth2: entered allmulticast mode [ 17.868004][ T372] veth4: entered allmulticast mode [ 17.871349][ T372] veth2: entered promiscuous mode [ 17.871707][ T372] veth4: entered promiscuous mode [ 17.944699][ T373] br1: port 1(lag) entered blocking state [ 17.945058][ T373] br1: port 1(lag) entered forwarding state [ 18.639836][ T382] GACT probability NOT on [ 25.021411][ T409] Mirror/redirect action on [ 25.047562][ T408] tc (408) used greatest stack depth: 23224 bytes left [ 35.562416][ T419] [ 35.562650][ T419] ============================= [ 35.562820][ T419] WARNING: suspicious RCU usage [ 35.562986][ T419] 6.14.0-rc6-virtme #1 Not tainted [ 35.563273][ T419] ----------------------------- [ 35.563444][ T419] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 35.563720][ T419] [ 35.563720][ T419] other info that might help us debug this: [ 35.563720][ T419] [ 35.564040][ T419] [ 35.564040][ T419] rcu_scheduler_active = 2, debug_locks = 1 [ 35.564286][ T419] 1 lock held by arping/419: [ 35.564452][ T419] #0: ffffffff8575b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 35.564745][ T419] [ 35.564745][ T419] stack backtrace: [ 35.564950][ T419] CPU: 2 UID: 0 PID: 419 Comm: arping Not tainted 6.14.0-rc6-virtme #1 [ 35.564954][ T419] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 35.564956][ T419] Call Trace: [ 35.564957][ T419] [ 35.564960][ T419] dump_stack_lvl+0xb0/0xd0 [ 35.564967][ T419] lockdep_rcu_suspicious+0x1ea/0x280 [ 35.564978][ T419] dev_hard_start_xmit+0x2fc/0x3f0 [ 35.564988][ T419] __dev_queue_xmit+0xfaf/0x18d0 [ 35.565002][ T419] ? __pfx___dev_queue_xmit+0x10/0x10 [ 35.565006][ T419] ? packet_parse_headers+0x231/0x9c0 [ 35.565015][ T419] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 35.565021][ T419] ? __pfx_packet_parse_headers+0x10/0x10 [ 35.565025][ T419] ? skb_copy_datagram_from_iter+0xe6/0x6f0 [ 35.565030][ T419] ? dev_get_by_index+0xb2/0x190 [ 35.565042][ T419] packet_snd+0xd0c/0x19d0 [ 35.565053][ T419] ? __lock_release+0x103/0x460 [ 35.565057][ T419] ? __might_fault+0x11b/0x170 [ 35.565064][ T419] ? __pfx_packet_snd+0x10/0x10 [ 35.565066][ T419] ? trace_lock_acquire+0x14c/0x1f0 [ 35.565068][ T419] ? __pfx___lock_release+0x10/0x10 [ 35.565075][ T419] ? lock_acquire+0x32/0xc0 [ 35.565082][ T419] ? __might_fault+0x11b/0x170 [ 35.565093][ T419] __sys_sendto+0x3c3/0x450 [ 35.565099][ T419] ? __pfx___sys_sendto+0x10/0x10 [ 35.565110][ T419] ? __lock_release+0x103/0x460 [ 35.565114][ T419] ? __pfx___lock_release+0x10/0x10 [ 35.565123][ T419] ? __pfx___up_read+0x10/0x10 [ 35.565130][ T419] ? do_user_addr_fault+0x374/0xe30 [ 35.565141][ T419] ? do_user_addr_fault+0x374/0xe30 [ 35.565148][ T419] __x64_sys_sendto+0xe0/0x1c0 [ 35.565152][ T419] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 35.565157][ T419] do_syscall_64+0xc1/0x1d0 [ 35.565164][ T419] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 35.565169][ T419] RIP: 0033:0x7f29e7766a4a [ 35.565173][ T419] 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 [ 35.565175][ T419] RSP: 002b:00007ffc9aa781c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 35.565179][ T419] RAX: ffffffffffffffda RBX: 0000000000000100 RCX: 00007f29e7766a4a [ 35.565181][ T419] RDX: 000000000000001c RSI: 00007ffc9aa781e0 RDI: 0000000000000005 [ 35.565182][ T419] RBP: 00007ffc9aa78330 R08: 00007ffc9aa79790 R09: 0000000000000014 [ 35.565184][ T419] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc9aa79a68 [ 35.565186][ T419] R13: 00000000004047b4 R14: 0000000000407de0 R15: 00007f29e786c000 [ 35.565202][ T419] [ 39.693939][ T48] br1: port 1(lag) entered disabled state [ 45.701118][ T48] br1: port 1(lag) entered blocking state [ 45.701392][ T48] br1: port 1(lag) entered forwarding state [ 60.909488][ T48] br1: port 1(lag) entered disabled state [ 66.947933][ T40] br1: port 1(lag) entered blocking state [ 66.948203][ T40] br1: port 1(lag) entered forwarding state [ 67.683662][ T514] lag: left allmulticast mode [ 67.684095][ T514] veth2: left allmulticast mode [ 67.685314][ T514] veth4: left allmulticast mode [ 67.685733][ T514] veth2: left promiscuous mode [ 67.685953][ T514] veth4: left promiscuous mode [ 67.686219][ T514] br1: port 1(lag) entered disabled state [ 67.780451][ T362] lag: Port device veth4 removed [ 67.784524][ T362] lag: Port device veth2 removed