[ 2.073648] ip (248) used greatest stack depth: 12296 bytes left [ 2.386260] 8021q: 802.1Q VLAN Support v1.8 [ 2.607037] lag2: Mode changed to "loadbalance" [ 2.635671] lag2: Port device veth3 added [ 2.672062] lag2: Port device veth5 added [ 2.695600] 8021q: adding VLAN 0 to HW filter on device lag2 [ 2.708221] 8021q: adding VLAN 0 to HW filter on device lag2 [ 2.768053] gre: GRE over IPv4 demultiplexer driver [ 2.770595] ip_gre: GRE over IPv4 tunneling driver [ 2.980709] lag1: Mode changed to "loadbalance" [ 3.003599] lag1: Port device veth2 added [ 3.040309] lag1: Port device veth4 added [ 3.061766] 8021q: adding VLAN 0 to HW filter on device lag1 [ 8.251956] Mirror/redirect action on [ 8.253479] tc (382) used greatest stack depth: 11840 bytes left [ 8.284258] GACT probability NOT on [ 8.297494] lag2: Port device veth5 removed [ 11.896361] lag2: Port device veth3 removed [ 15.603956] ------------[ cut here ]------------ [ 15.604069] refcount_t: underflow; use-after-free. [ 15.604123] WARNING: CPU: 0 PID: 308 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 15.604193] Modules linked in: act_gact act_mirred cls_flower sch_ingress ip_gre gre 8021q vrf veth [ 15.604274] CPU: 0 UID: 0 PID: 308 Comm: teamd Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 15.604338] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 15.604389] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 15.604432] Code: 84 e8 18 df ba ff 90 0f 0b 90 90 c3 80 3d f9 da eb 00 00 75 89 c6 05 f0 da eb 00 01 90 48 c7 c7 28 e0 d1 84 e8 f5 de ba ff 90 <0f> 0b 90 90 c3 80 3d d4 da eb 00 00 0f 85 62 ff ff ff c6 05 c7 da [ 15.604566] RSP: 0018:ffff96b6002f3730 EFLAGS: 00010282 [ 15.604605] RAX: 0000000000000000 RBX: ffff96b6002f3740 RCX: 00000000ffffdfff [ 15.604664] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 15.604735] RBP: ffff96b6002f3248 R08: ffffffff85156a28 R09: 00000000ffffdfff [ 15.604794] R10: ffffffff85076a40 R11: ffffffff85126a40 R12: dead000000000122 [ 15.604841] R13: 00000000fffba892 R14: 0000000000000001 R15: ffff8ad5062a9000 [ 15.604914] FS: 00007f162bc04b80(0000) GS:ffff8ad5b93d9000(0000) knlGS:0000000000000000 [ 15.604984] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 15.605030] CR2: 000055cbdf51fd18 CR3: 00000000062fd003 CR4: 0000000000772ef0 [ 15.605080] PKRU: 55555554 [ 15.605101] Call Trace: [ 15.605124] [ 15.605146] netdev_run_todo+0x21a/0x550 [ 15.605186] rtnl_dellink+0x15b/0x350 [ 15.605222] ? kmem_cache_alloc_node_noprof+0x362/0x4f0 [ 15.605269] ? finish_task_switch.isra.0+0x8d/0x270 [ 15.605311] ? kmalloc_reserve+0x8a/0xf0 [ 15.605345] ? kmalloc_reserve+0x8a/0xf0 [ 15.605376] ? rtnl_bridge_getlink+0x1a0/0x1a0 [ 15.605414] rtnetlink_rcv_msg+0x358/0x400 [ 15.605459] ? netlink_unicast+0x32d/0x380 [ 15.605502] ? rtnl_calcit.isra.0+0x110/0x110 [ 15.605544] netlink_rcv_skb+0x57/0x100 [ 15.605571] netlink_unicast+0x252/0x380 [ 15.605601] ? __alloc_skb+0xdb/0x190 [ 15.605635] netlink_sendmsg+0x1be/0x3e0 [ 15.605667] ____sys_sendmsg+0x132/0x260 [ 15.605710] ? copy_msghdr_from_user+0x6c/0xa0 [ 15.605752] ___sys_sendmsg+0x87/0xd0 [ 15.605784] ? __handle_mm_fault+0xa3e/0xe50 [ 15.605826] ? anon_pipe_write+0x314/0x650 [ 15.605864] __sys_sendmsg+0x71/0xd0 [ 15.605905] do_syscall_64+0xa4/0xfd0 [ 15.605945] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 15.605997] RIP: 0033:0x7f162bd451d7 [ 15.606031] Code: 0e 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10 [ 15.606148] RSP: 002b:00007ffc3caba1f8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 15.606202] RAX: ffffffffffffffda RBX: 000000003cff8320 RCX: 00007f162bd451d7 [ 15.606257] RDX: 0000000000000000 RSI: 00007ffc3caba230 RDI: 0000000000000005 [ 15.606303] RBP: 000000003cff8230 R08: 0000000000000003 R09: 0000000000000000 [ 15.606351] R10: 0000000000000200 R11: 0000000000000246 R12: 000000003d020300 [ 15.606412] R13: 00007ffc3caba230 R14: 0000000000000000 R15: 00007ffc3caba390 [ 15.606482] [ 15.606502] ---[ end trace 0000000000000000 ]--- [ 15.607234] teamd (308) used greatest stack depth: 11744 bytes left [ 15.739699] lag2: Mode changed to "loadbalance" [ 15.768452] lag2: Port device veth3 added [ 15.809045] lag2: Port device veth5 added [ 15.835427] 8021q: adding VLAN 0 to HW filter on device lag2 [ 15.848422] 8021q: adding VLAN 0 to HW filter on device lag2 [ 21.068444] lag2: Port device veth3 removed [ 24.665139] lag2: Port device veth5 removed [ 28.494216] lag2: Mode changed to "loadbalance" [ 28.522292] lag2: Port device veth3 added [ 28.563126] lag2: Port device veth5 added [ 28.587587] 8021q: adding VLAN 0 to HW filter on device lag2 [ 28.599820] 8021q: adding VLAN 0 to HW filter on device lag2 [ 33.803955] lag1: Port device veth4 removed [ 33.804346] lag1: Port device veth2 removed [ 34.128746] lag2: Port device veth5 removed [ 34.129089] lag2: Port device veth3 removed