[ 2.221417] ip (246) used greatest stack depth: 12120 bytes left [ 3.201856] 8021q: 802.1Q VLAN Support v1.8 [ 3.261629] gre: GRE over IPv4 demultiplexer driver [ 3.265814] ip6_gre: GRE over IPv6 tunneling driver [ 9.005641] GACT probability NOT on [ 9.007056] tc (429) used greatest stack depth: 11840 bytes left [ 11.984005] ------------[ cut here ]------------ [ 11.984181] refcount_t: underflow; use-after-free. [ 11.984264] WARNING: CPU: 2 PID: 646 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 11.984365] Modules linked in: act_gact cls_flower sch_ingress ip6_gre ip6_tunnel tunnel6 gre 8021q dummy vrf veth [ 11.984511] CPU: 2 UID: 0 PID: 646 Comm: ip Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 11.984610] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 11.984679] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 11.984762] Code: b7 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 51 b7 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 [ 11.984961] RSP: 0018:ffffa14140ca7730 EFLAGS: 00010282 [ 11.985034] RAX: 0000000000000000 RBX: ffffa14140ca7740 RCX: 00000000ffffdfff [ 11.985117] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 11.985199] RBP: ffff8fc1878a0000 R08: ffffffffb7956a28 R09: 00000000ffffdfff [ 11.985284] R10: ffffffffb7876a40 R11: ffffffffb7926a40 R12: 0000000000000001 [ 11.985380] R13: 00000000fffb9a56 R14: 0000000000000001 R15: ffff8fc1878a0000 [ 11.985471] FS: 00007f7e999c9800(0000) GS:ffff8fc206cd9000(0000) knlGS:0000000000000000 [ 11.985587] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 11.985662] CR2: 000055ae5024d280 CR3: 0000000002ee7003 CR4: 0000000000772ef0 [ 11.985747] PKRU: 55555554 [ 11.985797] Call Trace: [ 11.985844] [ 11.985898] netdev_run_todo+0x21a/0x550 [ 11.985972] rtnl_dellink+0x15b/0x350 [ 11.986045] ? virtio_fs_enqueue_req+0x352/0x570 [ 11.986140] ? netdev_run_todo+0x63/0x550 [ 11.986197] ? rtnl_bridge_getlink+0x1a0/0x1a0 [ 11.986264] rtnetlink_rcv_msg+0x358/0x400 [ 11.986351] ? get_page_from_freelist+0x15b4/0x1770 [ 11.986425] ? rtnl_calcit.isra.0+0x110/0x110 [ 11.986511] netlink_rcv_skb+0x57/0x100 [ 11.986570] netlink_unicast+0x252/0x380 [ 11.986655] ? __alloc_skb+0xdb/0x190 [ 11.986711] netlink_sendmsg+0x1be/0x3e0 [ 11.986775] ____sys_sendmsg+0x132/0x260 [ 11.986838] ? copy_msghdr_from_user+0x6c/0xa0 [ 11.986902] ___sys_sendmsg+0x87/0xd0 [ 11.986979] ? do_wp_page+0x369/0xe90 [ 11.987040] ? nfulnl_rcv_nl_event+0x36/0xa0 [ 11.987125] ? fsnotify_grab_connector+0x48/0x80 [ 11.987191] ? fsnotify_destroy_marks+0x29/0x150 [ 11.987266] __sys_sendmsg+0x71/0xd0 [ 11.987339] do_syscall_64+0xa4/0xfd0 [ 11.987397] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 11.987463] RIP: 0033:0x7f7e99b971d7 [ 11.987518] 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 [ 11.987658] RSP: 002b:00007fffe51d7708 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 11.987738] RAX: ffffffffffffffda RBX: 00007fffe51d7e30 RCX: 00007f7e99b971d7 [ 11.987815] RDX: 0000000000000000 RSI: 00007fffe51d7770 RDI: 0000000000000005 [ 11.987892] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 11.987975] R10: 00007f7e99a93f60 R11: 0000000000000246 R12: 0000000000000002 [ 11.988054] R13: 00000000690de85b R14: 0000000000499600 R15: 0000000000000000 [ 11.988133] [ 11.988179] ---[ end trace 0000000000000000 ]--- [ 11.988845] ip (646) used greatest stack depth: 11744 bytes left