[ 2.123361] ip (248) used greatest stack depth: 12344 bytes left [ 2.609532] 8021q: 802.1Q VLAN Support v1.8 [ 2.710878] gre: GRE over IPv4 demultiplexer driver [ 2.713355] ip_gre: GRE over IPv4 tunneling driver [ 3.176145] ip (362) used greatest stack depth: 12280 bytes left [ 3.329045] GACT probability NOT on [ 3.330033] tc (375) used greatest stack depth: 11840 bytes left [ 13.108975] ------------[ cut here ]------------ [ 13.109102] refcount_t: underflow; use-after-free. [ 13.109180] WARNING: CPU: 3 PID: 652 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 13.109278] Modules linked in: act_gact cls_flower sch_ingress ip_gre gre 8021q vrf veth [ 13.109386] CPU: 3 UID: 0 PID: 652 Comm: ip Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 13.109498] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 13.109569] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 13.109630] Code: 88 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 31 88 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 [ 13.109824] RSP: 0018:ffffabb3c0b67730 EFLAGS: 00010282 [ 13.109882] RAX: 0000000000000000 RBX: ffffabb3c0b67740 RCX: 00000000ffffdfff [ 13.109974] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 13.110058] RBP: ffffabb3c0b67248 R08: ffffffff88756a28 R09: 00000000ffffdfff [ 13.110143] R10: ffffffff88676a40 R11: ffffffff88726a40 R12: dead000000000122 [ 13.110226] R13: 00000000fffb9ed4 R14: 0000000000000001 R15: ffff8df206c09000 [ 13.110312] FS: 00007f28dbcc9800(0000) GS:ffff8df2b5f59000(0000) knlGS:0000000000000000 [ 13.110404] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 13.110481] CR2: 000055c6eae60a00 CR3: 0000000003c11004 CR4: 0000000000772ef0 [ 13.110554] PKRU: 55555554 [ 13.110583] Call Trace: [ 13.110613] [ 13.110647] netdev_run_todo+0x21a/0x550 [ 13.110698] rtnl_dellink+0x15b/0x350 [ 13.110760] ? virtio_fs_enqueue_req+0x352/0x570 [ 13.110830] ? netdev_run_todo+0x63/0x550 [ 13.110871] ? rtnl_bridge_getlink+0x1a0/0x1a0 [ 13.110935] rtnetlink_rcv_msg+0x358/0x400 [ 13.110987] ? get_page_from_freelist+0x15b4/0x1770 [ 13.111050] ? rtnl_calcit.isra.0+0x110/0x110 [ 13.111114] netlink_rcv_skb+0x57/0x100 [ 13.111163] netlink_unicast+0x252/0x380 [ 13.111210] ? __alloc_skb+0xdb/0x190 [ 13.111258] netlink_sendmsg+0x1be/0x3e0 [ 13.111309] ____sys_sendmsg+0x132/0x260 [ 13.111356] ? copy_msghdr_from_user+0x6c/0xa0 [ 13.111420] ___sys_sendmsg+0x87/0xd0 [ 13.111467] ? do_wp_page+0x369/0xe90 [ 13.111519] ? nfulnl_rcv_nl_event+0x36/0xa0 [ 13.111583] ? fsnotify_grab_connector+0x48/0x80 [ 13.111657] ? fsnotify_destroy_marks+0x29/0x150 [ 13.111718] __sys_sendmsg+0x71/0xd0 [ 13.111765] do_syscall_64+0xa4/0xfd0 [ 13.111815] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 13.111879] RIP: 0033:0x7f28dbe971d7 [ 13.111926] 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 [ 13.112132] RSP: 002b:00007ffe35406d78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 13.112220] RAX: ffffffffffffffda RBX: 00007ffe354074a0 RCX: 00007f28dbe971d7 [ 13.112307] RDX: 0000000000000000 RSI: 00007ffe35406de0 RDI: 0000000000000005 [ 13.112397] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 13.112480] R10: 00007f28dbd93f60 R11: 0000000000000246 R12: 0000000000000002 [ 13.112549] R13: 00000000690dee12 R14: 0000000000499600 R15: 0000000000000000 [ 13.112636] [ 13.112660] ---[ end trace 0000000000000000 ]--- [ 13.113302] ip (652) used greatest stack depth: 11744 bytes left