[ 11.577468][ T254] ip (254) used greatest stack depth: 24184 bytes left [ 14.041915][ T301] lag1: Mode changed to "loadbalance" [ 14.559579][ T310] lag1: Port device veth0 added [ 14.629067][ T311] lag1: Port device veth6 added [ 15.631365][ T323] 8021q: 802.1Q VLAN Support v1.8 [ 15.631716][ T323] 8021q: adding VLAN 0 to HW filter on device lag1 [ 16.979301][ T342] lag4: Mode changed to "loadbalance" [ 17.095611][ T344] 8021q: adding VLAN 0 to HW filter on device lag4 [ 17.513895][ T350] lag4: Port device veth3 added [ 17.602752][ T351] lag4: Port device veth5 added [ 18.077633][ T357] 8021q: adding VLAN 0 to HW filter on device lag4 [ 19.749391][ T380] lag2: Mode changed to "loadbalance" [ 19.850655][ T382] 8021q: adding VLAN 0 to HW filter on device lag2 [ 20.256414][ T388] lag2: Port device veth1 added [ 20.265272][ T301] [ 20.265573][ T301] ============================= [ 20.265817][ T301] WARNING: suspicious RCU usage [ 20.266122][ T301] 6.14.0-rc6-virtme #1 Not tainted [ 20.266297][ T301] ----------------------------- [ 20.266567][ T301] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 20.266842][ T301] [ 20.266842][ T301] other info that might help us debug this: [ 20.266842][ T301] [ 20.267242][ T301] [ 20.267242][ T301] rcu_scheduler_active = 2, debug_locks = 1 [ 20.267548][ T301] 1 lock held by teamd/301: [ 20.267755][ T301] #0: ffffffff8f95b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 20.268135][ T301] [ 20.268135][ T301] stack backtrace: [ 20.268351][ T301] CPU: 2 UID: 0 PID: 301 Comm: teamd Not tainted 6.14.0-rc6-virtme #1 [ 20.268355][ T301] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 20.268358][ T301] Call Trace: [ 20.268360][ T301] [ 20.268362][ T301] dump_stack_lvl+0xb0/0xd0 [ 20.268369][ T301] lockdep_rcu_suspicious+0x1ea/0x280 [ 20.268379][ T301] dev_hard_start_xmit+0x2fc/0x3f0 [ 20.268390][ T301] __dev_queue_xmit+0xfaf/0x18d0 [ 20.268404][ T301] ? __pfx___dev_queue_xmit+0x10/0x10 [ 20.268408][ T301] ? packet_parse_headers+0x231/0x9c0 [ 20.268417][ T301] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 20.268423][ T301] ? __pfx_packet_parse_headers+0x10/0x10 [ 20.268427][ T301] ? skb_copy_datagram_from_iter+0xe6/0x6f0 [ 20.268436][ T301] ? packet_cached_dev_get+0xd5/0x210 [ 20.268452][ T301] packet_snd+0xd0c/0x19d0 [ 20.268470][ T301] ? __pfx_packet_snd+0x10/0x10 [ 20.268476][ T301] ? build_sched_domains+0x14d0/0x1690 [ 20.268484][ T301] ? __lock_release+0x103/0x460 [ 20.268488][ T301] ? __might_fault+0x11b/0x170 [ 20.268495][ T301] ? __pfx___lock_release+0x10/0x10 [ 20.268504][ T301] __sys_sendto+0x3c3/0x450 [ 20.268510][ T301] ? __pfx___sys_sendto+0x10/0x10 [ 20.268512][ T301] ? __might_fault+0x11b/0x170 [ 20.268526][ T301] ? __sys_getsockname+0x150/0x1f0 [ 20.268531][ T301] ? __pfx___sys_getsockname+0x10/0x10 [ 20.268536][ T301] ? __pfx___up_read+0x10/0x10 [ 20.268544][ T301] ? do_user_addr_fault+0x972/0xe30 [ 20.268552][ T301] ? do_user_addr_fault+0x97c/0xe30 [ 20.268559][ T301] __x64_sys_sendto+0xe0/0x1c0 [ 20.268563][ T301] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 20.268568][ T301] do_syscall_64+0xc1/0x1d0 [ 20.268575][ T301] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 20.268579][ T301] RIP: 0033:0x7f42cb5918f0 [ 20.268584][ T301] Code: ff ff 64 89 02 eb bd 0f 1f 00 f3 0f 1e fa 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 1d 45 31 c9 45 31 c0 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 68 c3 0f 1f 80 00 00 00 00 41 54 48 83 ec 20 [ 20.268587][ T301] RSP: 002b:00007fff797177b8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 20.268590][ T301] RAX: ffffffffffffffda RBX: 00000000377a2740 RCX: 00007f42cb5918f0 [ 20.268593][ T301] RDX: 000000000000007c RSI: 00007fff79717830 RDI: 0000000000000006 [ 20.268594][ T301] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 20.268596][ T301] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000000007c [ 20.268597][ T301] R13: 00007fff79717830 R14: 0000000000000006 R15: 00000000377a2c90 [ 20.268614][ T301] [ 20.375695][ T389] lag2: Port device veth7 added [ 21.454073][ T403] br1: port 1(lag2.100) entered blocking state [ 21.454370][ T403] br1: port 1(lag2.100) entered disabled state [ 21.454746][ T403] lag2.100: entered allmulticast mode [ 21.454928][ T403] lag2: entered allmulticast mode [ 21.455125][ T403] veth1: entered allmulticast mode [ 21.455430][ T403] veth7: entered allmulticast mode [ 21.458585][ T403] lag2.100: entered promiscuous mode [ 21.458828][ T403] lag2: entered promiscuous mode [ 21.459016][ T403] veth1: entered promiscuous mode [ 21.459515][ T403] veth7: entered promiscuous mode [ 21.873026][ T410] br2: port 1(lag2.200) entered blocking state [ 21.873484][ T410] br2: port 1(lag2.200) entered disabled state [ 21.873911][ T410] lag2.200: entered allmulticast mode [ 21.878575][ T410] lag2.200: entered promiscuous mode [ 22.129056][ T413] br1: port 1(lag2.100) entered blocking state [ 22.129574][ T413] br1: port 1(lag2.100) entered forwarding state [ 22.149082][ T413] ip (413) used greatest stack depth: 23928 bytes left [ 22.218237][ T414] br2: port 1(lag2.200) entered blocking state [ 22.218549][ T414] br2: port 1(lag2.200) entered forwarding state [ 22.752975][ T422] lag3: Mode changed to "loadbalance" [ 22.875434][ T424] 8021q: adding VLAN 0 to HW filter on device lag3 [ 23.279610][ T430] lag3: Port device veth2 added [ 23.378681][ T431] lag3: Port device veth4 added [ 36.015847][ T512] veth7: left promiscuous mode [ 36.016477][ T512] veth7: left allmulticast mode [ 36.018576][ T512] lag2: Port device veth7 removed [ 51.876990][ T573] veth7: entered promiscuous mode [ 51.877536][ T573] veth7: entered allmulticast mode [ 51.878948][ T573] lag2: Port device veth7 added [ 51.892463][ T573] ip (573) used greatest stack depth: 23784 bytes left [ 52.263664][ T584] veth1: left promiscuous mode [ 52.264208][ T584] veth1: left allmulticast mode [ 52.266405][ T584] lag2: Port device veth1 removed [ 68.100343][ T252] br1: port 1(lag2.100) entered disabled state [ 68.103779][ T252] br2: port 1(lag2.200) entered disabled state [ 68.187616][ T645] veth7: left promiscuous mode [ 68.188134][ T645] veth7: left allmulticast mode [ 68.191267][ T645] lag2: Port device veth7 removed [ 68.547712][ T656] veth1: entered promiscuous mode [ 68.548188][ T656] veth1: entered allmulticast mode [ 68.549092][ T656] lag2: Port device veth1 added [ 68.566372][ T40] br1: port 1(lag2.100) entered blocking state [ 68.566713][ T40] br1: port 1(lag2.100) entered forwarding state [ 68.567846][ T40] br2: port 1(lag2.200) entered blocking state [ 68.568257][ T40] br2: port 1(lag2.200) entered forwarding state [ 68.928626][ T668] veth7: entered promiscuous mode [ 68.929305][ T668] veth7: entered allmulticast mode [ 68.940765][ T668] lag2: Port device veth7 added [ 84.759971][ T728] lag2.200: left allmulticast mode [ 84.760334][ T728] lag2.200: left promiscuous mode [ 84.761068][ T728] br2: port 1(lag2.200) entered disabled state [ 84.887519][ T729] lag2.100: left allmulticast mode [ 84.888074][ T729] lag2: left allmulticast mode [ 84.888327][ T729] veth1: left allmulticast mode [ 84.888548][ T729] veth7: left allmulticast mode [ 84.888775][ T729] lag2.100: left promiscuous mode [ 84.888980][ T729] lag2: left promiscuous mode [ 84.890154][ T729] veth1: left promiscuous mode [ 84.890701][ T729] veth7: left promiscuous mode [ 84.891593][ T729] br1: port 1(lag2.100) entered disabled state [ 87.047992][ T731] br1: port 1(lag2.100) entered blocking state [ 87.048309][ T731] br1: port 1(lag2.100) entered disabled state [ 87.048599][ T731] lag2.100: entered allmulticast mode [ 87.048805][ T731] lag2: entered allmulticast mode [ 87.049032][ T731] veth1: entered allmulticast mode [ 87.049639][ T731] veth7: entered allmulticast mode [ 87.052140][ T731] lag2.100: entered promiscuous mode [ 87.052367][ T731] lag2: entered promiscuous mode [ 87.052632][ T731] veth1: entered promiscuous mode [ 87.053140][ T731] veth7: entered promiscuous mode [ 87.065229][ T731] br1: port 1(lag2.100) entered blocking state [ 87.065576][ T731] br1: port 1(lag2.100) entered forwarding state [ 87.156092][ T732] br2: port 1(lag2.200) entered blocking state [ 87.156410][ T732] br2: port 1(lag2.200) entered disabled state [ 87.156694][ T732] lag2.200: entered allmulticast mode [ 87.158633][ T732] lag2.200: entered promiscuous mode [ 87.160362][ T732] br2: port 1(lag2.200) entered blocking state [ 87.160643][ T732] br2: port 1(lag2.200) entered forwarding state [ 102.907462][ T792] lag3: Port device veth2 removed [ 118.704570][ T853] lag3: Port device veth2 added [ 119.057253][ T864] lag3: Port device veth4 removed [ 134.934476][ T925] lag3: Port device veth2 removed [ 135.313041][ T936] lag3: Port device veth4 added [ 135.710394][ T947] lag3: Port device veth2 added [ 152.377365][ T1017] lag3: Port device veth4 removed [ 152.462854][ T1018] lag3: Port device veth2 removed [ 153.353788][ T1030] br2: port 1(lag2.200) entered disabled state [ 153.434409][ T1031] br1: port 1(lag2.100) entered disabled state [ 153.671389][ T1034] lag2.200: left allmulticast mode [ 153.671629][ T1034] lag2.200: left promiscuous mode [ 153.672227][ T1034] br2: port 1(lag2.200) entered disabled state [ 153.914263][ T1036] lag2.100: left allmulticast mode [ 153.914642][ T1036] lag2: left allmulticast mode [ 153.914967][ T1036] veth1: left allmulticast mode [ 153.915930][ T1036] veth7: left allmulticast mode [ 153.916334][ T1036] lag2.100: left promiscuous mode [ 153.916651][ T1036] lag2: left promiscuous mode [ 153.916943][ T1036] veth1: left promiscuous mode [ 153.917689][ T1036] veth7: left promiscuous mode [ 153.918514][ T1036] br1: port 1(lag2.100) entered disabled state [ 154.355160][ T1040] lag2: Port device veth7 removed [ 154.441515][ T1041] lag2: Port device veth1 removed [ 156.365606][ T1058] lag4: Port device veth5 removed [ 156.460921][ T1059] lag4: Port device veth3 removed [ 158.342127][ T1074] lag1: Port device veth6 removed [ 158.459383][ T1075] lag1: Port device veth0 removed