[ 2.168087] ip (247) used greatest stack depth: 12360 bytes left [ 2.357128] ip (273) used greatest stack depth: 12168 bytes left [ 2.793199] gre: GRE over IPv4 demultiplexer driver [ 2.797735] ip6_gre: GRE over IPv6 tunneling driver [ 2.812492] ip6_tunnel: g1 xmit: Local address not yet configured! [ 2.826522] ip6_tunnel: g1 xmit: Local address not yet configured! [ 3.005139] 8021q: 802.1Q VLAN Support v1.8 [ 3.408124] GACT probability NOT on [ 3.409498] tc (370) used greatest stack depth: 11840 bytes left [ 3.579492] ip6_tunnel: g2 xmit: Local address not yet configured! [ 3.595089] ip6_tunnel: g2 xmit: Local address not yet configured! [ 17.344212] ------------[ cut here ]------------ [ 17.344337] refcount_t: underflow; use-after-free. [ 17.344419] WARNING: CPU: 0 PID: 563 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 17.344517] Modules linked in: act_gact cls_flower sch_ingress 8021q ip6_gre ip6_tunnel tunnel6 gre vrf veth [ 17.344639] CPU: 0 UID: 0 PID: 563 Comm: ip Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 17.344737] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 17.344801] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 17.344852] Code: bd 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 bd 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 [ 17.345035] RSP: 0018:ffffa46e40bd7730 EFLAGS: 00010282 [ 17.345088] RAX: 0000000000000000 RBX: ffffa46e40bd7740 RCX: 00000000ffffdfff [ 17.345172] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 17.345251] RBP: ffffa46e40bd7248 R08: ffffffffbd956a28 R09: 00000000ffffdfff [ 17.345329] R10: ffffffffbd876a40 R11: ffffffffbd926a40 R12: dead000000000122 [ 17.345404] R13: 00000000fffbaf60 R14: 0000000000000001 R15: ffff9683c5f5c000 [ 17.345482] FS: 00007f8224aac800(0000) GS:ffff968440bd9000(0000) knlGS:0000000000000000 [ 17.345564] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 17.345645] CR2: 000055abe9f70b00 CR3: 0000000003095003 CR4: 0000000000772ef0 [ 17.345723] PKRU: 55555554 [ 17.345756] Call Trace: [ 17.345781] [ 17.345813] netdev_run_todo+0x21a/0x550 [ 17.345869] rtnl_dellink+0x15b/0x350 [ 17.345922] ? virtio_fs_enqueue_req+0x352/0x570 [ 17.345983] ? netdev_run_todo+0x63/0x550 [ 17.346028] ? rtnl_bridge_getlink+0x1a0/0x1a0 [ 17.346087] rtnetlink_rcv_msg+0x358/0x400 [ 17.346133] ? get_page_from_freelist+0x15b4/0x1770 [ 17.346197] ? rtnl_calcit.isra.0+0x110/0x110 [ 17.346257] netlink_rcv_skb+0x57/0x100 [ 17.346305] netlink_unicast+0x252/0x380 [ 17.346349] ? __alloc_skb+0xdb/0x190 [ 17.346397] netlink_sendmsg+0x1be/0x3e0 [ 17.346443] ____sys_sendmsg+0x132/0x260 [ 17.346488] ? copy_msghdr_from_user+0x6c/0xa0 [ 17.346547] ___sys_sendmsg+0x87/0xd0 [ 17.346592] ? do_wp_page+0x369/0xe90 [ 17.346639] ? nfulnl_rcv_nl_event+0x36/0xa0 [ 17.346700] ? fsnotify_grab_connector+0x48/0x80 [ 17.346758] ? fsnotify_destroy_marks+0x29/0x150 [ 17.346817] __sys_sendmsg+0x71/0xd0 [ 17.346863] do_syscall_64+0xa4/0xfd0 [ 17.346914] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 17.346977] RIP: 0033:0x7f8224c7a1d7 [ 17.347022] 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 [ 17.347215] RSP: 002b:00007ffe41d30ae8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 17.347298] RAX: ffffffffffffffda RBX: 00007ffe41d31210 RCX: 00007f8224c7a1d7 [ 17.347375] RDX: 0000000000000000 RSI: 00007ffe41d30b50 RDI: 0000000000000005 [ 17.347459] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 17.347539] R10: 00007f8224b76f60 R11: 0000000000000246 R12: 0000000000000002 [ 17.347613] R13: 00000000690de789 R14: 0000000000499600 R15: 0000000000000000 [ 17.347694] [ 17.347726] ---[ end trace 0000000000000000 ]--- [ 17.348391] ip (563) used greatest stack depth: 11744 bytes left