[ 2.107669] ip (248) used greatest stack depth: 12408 bytes left [ 2.159362] ip (255) used greatest stack depth: 12360 bytes left [ 2.552794] 8021q: 802.1Q VLAN Support v1.8 [ 2.649751] gre: GRE over IPv4 demultiplexer driver [ 2.651385] ip_gre: GRE over IPv4 tunneling driver [ 3.236368] GACT probability NOT on [ 3.237552] tc (363) used greatest stack depth: 11840 bytes left [ 10.814711] ------------[ cut here ]------------ [ 10.814858] refcount_t: underflow; use-after-free. [ 10.814926] WARNING: CPU: 3 PID: 522 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 10.815017] Modules linked in: act_gact cls_flower sch_ingress ip_gre gre 8021q vrf veth [ 10.815110] CPU: 3 UID: 0 PID: 522 Comm: ip Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 10.815202] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 10.815266] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 10.815317] Code: b0 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 91 b0 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 [ 10.815494] RSP: 0018:ffffbedf40a4f730 EFLAGS: 00010282 [ 10.815543] RAX: 0000000000000000 RBX: ffffbedf40a4f740 RCX: 00000000ffffdfff [ 10.815624] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 10.815720] RBP: ffffbedf40a4f248 R08: ffffffffb0d56a28 R09: 00000000ffffdfff [ 10.815805] R10: ffffffffb0c76a40 R11: ffffffffb0d26a40 R12: dead000000000122 [ 10.815879] R13: 00000000fffb95e0 R14: 0000000000000001 R15: ffff9b8d04f83000 [ 10.815957] FS: 00007f8ae249a800(0000) GS:ffff9b8d8d959000(0000) knlGS:0000000000000000 [ 10.816034] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 10.816102] CR2: 00000000004e7438 CR3: 000000000330e005 CR4: 0000000000772ef0 [ 10.816177] PKRU: 55555554 [ 10.816204] Call Trace: [ 10.816231] [ 10.816253] netdev_run_todo+0x21a/0x550 [ 10.816304] rtnl_dellink+0x15b/0x350 [ 10.816358] ? virtio_fs_enqueue_req+0x352/0x570 [ 10.816419] ? netdev_run_todo+0x63/0x550 [ 10.816455] ? rtnl_bridge_getlink+0x1a0/0x1a0 [ 10.816505] rtnetlink_rcv_msg+0x358/0x400 [ 10.816543] ? get_page_from_freelist+0x15b4/0x1770 [ 10.816600] ? rtnl_calcit.isra.0+0x110/0x110 [ 10.816666] netlink_rcv_skb+0x57/0x100 [ 10.816715] netlink_unicast+0x252/0x380 [ 10.816759] ? __alloc_skb+0xdb/0x190 [ 10.816798] netlink_sendmsg+0x1be/0x3e0 [ 10.816834] ____sys_sendmsg+0x132/0x260 [ 10.816878] ? copy_msghdr_from_user+0x6c/0xa0 [ 10.816929] ___sys_sendmsg+0x87/0xd0 [ 10.816968] ? do_wp_page+0x369/0xe90 [ 10.817013] ? nfulnl_rcv_nl_event+0x36/0xa0 [ 10.817072] ? fsnotify_grab_connector+0x48/0x80 [ 10.817130] ? fsnotify_destroy_marks+0x29/0x150 [ 10.817183] __sys_sendmsg+0x71/0xd0 [ 10.817221] do_syscall_64+0xa4/0xfd0 [ 10.817265] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 10.817314] RIP: 0033:0x7f8ae26681d7 [ 10.817360] 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 [ 10.817540] RSP: 002b:00007ffd8cd16a78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 10.817617] RAX: ffffffffffffffda RBX: 00007ffd8cd171a0 RCX: 00007f8ae26681d7 [ 10.817700] RDX: 0000000000000000 RSI: 00007ffd8cd16ae0 RDI: 0000000000000005 [ 10.817782] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 10.817860] R10: 00007f8ae2564f60 R11: 0000000000000246 R12: 0000000000000002 [ 10.817936] R13: 00000000690dee95 R14: 0000000000499600 R15: 0000000000000000 [ 10.818020] [ 10.818046] ---[ end trace 0000000000000000 ]--- [ 10.818683] ip (522) used greatest stack depth: 11744 bytes left