[ 2.122463] ip (247) used greatest stack depth: 12408 bytes left [ 2.229422] ip (260) used greatest stack depth: 12328 bytes left [ 2.623461] 8021q: 802.1Q VLAN Support v1.8 [ 2.736199] gre: GRE over IPv4 demultiplexer driver [ 2.738756] ip_gre: GRE over IPv4 tunneling driver [ 3.329116] GACT probability NOT on [ 3.330339] tc (361) used greatest stack depth: 11840 bytes left [ 11.000338] ------------[ cut here ]------------ [ 11.000470] refcount_t: underflow; use-after-free. [ 11.000589] WARNING: CPU: 2 PID: 520 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 11.000674] Modules linked in: act_gact cls_flower sch_ingress ip_gre gre 8021q vrf veth [ 11.000755] CPU: 2 UID: 0 PID: 520 Comm: ip Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 11.000836] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 11.000912] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 11.000985] Code: b9 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 b9 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 [ 11.001134] RSP: 0018:ffffb1e680a37730 EFLAGS: 00010282 [ 11.001190] RAX: 0000000000000000 RBX: ffffb1e680a37740 RCX: 00000000ffffdfff [ 11.001262] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 11.001374] RBP: ffffb1e680a37248 R08: ffffffffb9756a28 R09: 00000000ffffdfff [ 11.001453] R10: ffffffffb9676a40 R11: ffffffffb9726a40 R12: dead000000000122 [ 11.001537] R13: 00000000fffb9696 R14: 0000000000000001 R15: ffff973205f73000 [ 11.001615] FS: 00007fb5c97a9800(0000) GS:ffff973284ed9000(0000) knlGS:0000000000000000 [ 11.001697] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 11.001761] CR2: 00000000004e7438 CR3: 0000000002f70001 CR4: 0000000000772ef0 [ 11.001837] PKRU: 55555554 [ 11.001877] Call Trace: [ 11.001930] [ 11.001982] netdev_run_todo+0x21a/0x550 [ 11.002057] rtnl_dellink+0x15b/0x350 [ 11.002113] ? virtio_fs_enqueue_req+0x352/0x570 [ 11.002195] ? netdev_run_todo+0x63/0x550 [ 11.002244] ? rtnl_bridge_getlink+0x1a0/0x1a0 [ 11.002312] rtnetlink_rcv_msg+0x358/0x400 [ 11.002362] ? get_page_from_freelist+0x15b4/0x1770 [ 11.002430] ? rtnl_calcit.isra.0+0x110/0x110 [ 11.002488] netlink_rcv_skb+0x57/0x100 [ 11.002547] netlink_unicast+0x252/0x380 [ 11.002605] ? __alloc_skb+0xdb/0x190 [ 11.002657] netlink_sendmsg+0x1be/0x3e0 [ 11.002723] ____sys_sendmsg+0x132/0x260 [ 11.002777] ? copy_msghdr_from_user+0x6c/0xa0 [ 11.002835] ___sys_sendmsg+0x87/0xd0 [ 11.002888] ? do_wp_page+0x369/0xe90 [ 11.002944] ? nfulnl_rcv_nl_event+0x36/0xa0 [ 11.003006] ? fsnotify_grab_connector+0x48/0x80 [ 11.003064] ? fsnotify_destroy_marks+0x29/0x150 [ 11.003121] __sys_sendmsg+0x71/0xd0 [ 11.003184] do_syscall_64+0xa4/0xfd0 [ 11.003283] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 11.003344] RIP: 0033:0x7fb5c99771d7 [ 11.003395] 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 [ 11.003531] RSP: 002b:00007ffcf0597f78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 11.003608] RAX: ffffffffffffffda RBX: 00007ffcf05986a0 RCX: 00007fb5c99771d7 [ 11.003686] RDX: 0000000000000000 RSI: 00007ffcf0597fe0 RDI: 0000000000000005 [ 11.003773] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 11.003850] R10: 00007fb5c9873f60 R11: 0000000000000246 R12: 0000000000000002 [ 11.003926] R13: 00000000690de886 R14: 0000000000499600 R15: 0000000000000000 [ 11.004017] [ 11.004063] ---[ end trace 0000000000000000 ]--- [ 11.004735] ip (520) used greatest stack depth: 11744 bytes left