[ 12.753624][ T295] 8021q: 802.1Q VLAN Support v1.8 [ 16.384627][ T342] gre: GRE over IPv4 demultiplexor driver [ 16.395521][ T342] ip_gre: GRE over IPv4 tunneling driver [ 17.349375][ T359] lag: Mode changed to "loadbalance" [ 17.538198][ T362] lag: Port device veth2 added [ 17.803200][ T366] lag: Port device veth4 added [ 17.965426][ T368] 8021q: adding VLAN 0 to HW filter on device lag [ 18.035310][ T369] br1: port 1(lag) entered blocking state [ 18.035781][ T369] br1: port 1(lag) entered disabled state [ 18.036127][ T369] lag: entered allmulticast mode [ 18.036351][ T369] veth2: entered allmulticast mode [ 18.036655][ T369] veth4: entered allmulticast mode [ 18.038935][ T369] veth2: entered promiscuous mode [ 18.039412][ T369] veth4: entered promiscuous mode [ 18.122410][ T370] br1: port 1(lag) entered blocking state [ 18.122855][ T370] br1: port 1(lag) entered forwarding state [ 18.746639][ T379] GACT probability NOT on [ 25.231711][ T408] Mirror/redirect action on [ 35.779578][ T418] [ 35.779793][ T418] ============================= [ 35.779965][ T418] WARNING: suspicious RCU usage [ 35.780214][ T418] 6.14.0-rc6-virtme #1 Not tainted [ 35.780371][ T418] ----------------------------- [ 35.780543][ T418] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 35.780807][ T418] [ 35.780807][ T418] other info that might help us debug this: [ 35.780807][ T418] [ 35.781111][ T418] [ 35.781111][ T418] rcu_scheduler_active = 2, debug_locks = 1 [ 35.781336][ T418] 1 lock held by arping/418: [ 35.781490][ T418] #0: ffffffffabd5b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 35.781796][ T418] [ 35.781796][ T418] stack backtrace: [ 35.781981][ T418] CPU: 1 UID: 0 PID: 418 Comm: arping Not tainted 6.14.0-rc6-virtme #1 [ 35.781985][ T418] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 35.781987][ T418] Call Trace: [ 35.781989][ T418] [ 35.781991][ T418] dump_stack_lvl+0xb0/0xd0 [ 35.781998][ T418] lockdep_rcu_suspicious+0x1ea/0x280 [ 35.782009][ T418] dev_hard_start_xmit+0x2fc/0x3f0 [ 35.782019][ T418] __dev_queue_xmit+0xfaf/0x18d0 [ 35.782033][ T418] ? __pfx___dev_queue_xmit+0x10/0x10 [ 35.782037][ T418] ? packet_parse_headers+0x231/0x9c0 [ 35.782046][ T418] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 35.782054][ T418] ? __pfx_packet_parse_headers+0x10/0x10 [ 35.782058][ T418] ? skb_copy_datagram_from_iter+0xe6/0x6f0 [ 35.782064][ T418] ? dev_get_by_index+0xb2/0x190 [ 35.782075][ T418] packet_snd+0xd0c/0x19d0 [ 35.782087][ T418] ? __lock_release+0x103/0x460 [ 35.782090][ T418] ? __might_fault+0x11b/0x170 [ 35.782097][ T418] ? __pfx_packet_snd+0x10/0x10 [ 35.782099][ T418] ? trace_lock_acquire+0x14c/0x1f0 [ 35.782102][ T418] ? __pfx___lock_release+0x10/0x10 [ 35.782109][ T418] ? lock_acquire+0x32/0xc0 [ 35.782115][ T418] ? __might_fault+0x11b/0x170 [ 35.782126][ T418] __sys_sendto+0x3c3/0x450 [ 35.782132][ T418] ? __pfx___sys_sendto+0x10/0x10 [ 35.782143][ T418] ? __lock_release+0x103/0x460 [ 35.782148][ T418] ? __pfx___lock_release+0x10/0x10 [ 35.782157][ T418] ? __pfx___up_read+0x10/0x10 [ 35.782165][ T418] ? do_user_addr_fault+0x374/0xe30 [ 35.782175][ T418] ? do_user_addr_fault+0x374/0xe30 [ 35.782182][ T418] __x64_sys_sendto+0xe0/0x1c0 [ 35.782186][ T418] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 35.782191][ T418] do_syscall_64+0xc1/0x1d0 [ 35.782198][ T418] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 35.782203][ T418] RIP: 0033:0x7f28c50dca4a [ 35.782207][ T418] 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 [ 35.782210][ T418] RSP: 002b:00007ffdfc4e42a8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 35.782213][ T418] RAX: ffffffffffffffda RBX: 0000000000000100 RCX: 00007f28c50dca4a [ 35.782215][ T418] RDX: 000000000000001c RSI: 00007ffdfc4e42c0 RDI: 0000000000000005 [ 35.782217][ T418] RBP: 00007ffdfc4e4410 R08: 00007ffdfc4e5870 R09: 0000000000000014 [ 35.782219][ T418] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffdfc4e5b48 [ 35.782220][ T418] R13: 00000000004047b4 R14: 0000000000407de0 R15: 00007f28c51e2000 [ 35.782236][ T418] [ 39.916985][ T38] br1: port 1(lag) entered disabled state [ 46.012101][ T69] br1: port 1(lag) entered blocking state [ 46.012597][ T69] br1: port 1(lag) entered forwarding state [ 61.221824][ T46] br1: port 1(lag) entered disabled state [ 67.414948][ T38] br1: port 1(lag) entered blocking state [ 67.415305][ T38] br1: port 1(lag) entered forwarding state [ 68.178793][ T512] lag: left allmulticast mode [ 68.179066][ T512] veth2: left allmulticast mode [ 68.179270][ T512] veth4: left allmulticast mode [ 68.179527][ T512] veth2: left promiscuous mode [ 68.179748][ T512] veth4: left promiscuous mode [ 68.179950][ T512] br1: port 1(lag) entered disabled state [ 68.189427][ T512] ip (512) used greatest stack depth: 23832 bytes left [ 68.273333][ T359] lag: Port device veth4 removed [ 68.276973][ T359] lag: Port device veth2 removed