[ 2.099836] ip (257) used greatest stack depth: 11976 bytes left [ 2.805327] 8021q: 802.1Q VLAN Support v1.8 [ 2.863747] gre: GRE over IPv4 demultiplexer driver [ 2.869119] ip6_gre: GRE over IPv6 tunneling driver [ 8.514813] GACT probability NOT on [ 8.515925] tc (404) used greatest stack depth: 11840 bytes left [ 11.408345] ------------[ cut here ]------------ [ 11.408504] refcount_t: underflow; use-after-free. [ 11.408572] WARNING: CPU: 0 PID: 624 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 11.408663] Modules linked in: act_gact cls_flower sch_ingress ip6_gre ip6_tunnel tunnel6 gre 8021q vrf veth [ 11.408789] CPU: 0 UID: 0 PID: 624 Comm: ip Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 11.408876] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 11.408949] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 11.409000] Code: ac 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 ac 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 [ 11.409195] RSP: 0018:ffffb00e00cc7730 EFLAGS: 00010282 [ 11.409244] RAX: 0000000000000000 RBX: ffffb00e00cc7740 RCX: 00000000ffffdfff [ 11.409324] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 11.409407] RBP: ffffb00e00cc7248 R08: ffffffffacd56a28 R09: 00000000ffffdfff [ 11.409486] R10: ffffffffacc76a40 R11: ffffffffacd26a40 R12: dead000000000122 [ 11.409565] R13: 00000000fffb982e R14: 0000000000000001 R15: ffff8e148428d000 [ 11.409644] FS: 00007f7754ee0800(0000) GS:ffff8e15117d9000(0000) knlGS:0000000000000000 [ 11.409729] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 11.409801] CR2: 000055687d299030 CR3: 000000000856b003 CR4: 0000000000772ef0 [ 11.409882] PKRU: 55555554 [ 11.409913] Call Trace: [ 11.409939] [ 11.409963] netdev_run_todo+0x21a/0x550 [ 11.410010] rtnl_dellink+0x15b/0x350 [ 11.410061] ? virtio_fs_enqueue_req+0x352/0x570 [ 11.410122] ? netdev_run_todo+0x63/0x550 [ 11.410166] ? rtnl_bridge_getlink+0x1a0/0x1a0 [ 11.410216] rtnetlink_rcv_msg+0x358/0x400 [ 11.410262] ? get_page_from_freelist+0x15b4/0x1770 [ 11.410326] ? rtnl_calcit.isra.0+0x110/0x110 [ 11.410387] netlink_rcv_skb+0x57/0x100 [ 11.410433] netlink_unicast+0x252/0x380 [ 11.410475] ? __alloc_skb+0xdb/0x190 [ 11.410514] netlink_sendmsg+0x1be/0x3e0 [ 11.410555] ____sys_sendmsg+0x132/0x260 [ 11.410600] ? copy_msghdr_from_user+0x6c/0xa0 [ 11.410659] ___sys_sendmsg+0x87/0xd0 [ 11.410704] ? do_wp_page+0x369/0xe90 [ 11.410749] ? nfulnl_rcv_nl_event+0x36/0xa0 [ 11.410807] ? fsnotify_grab_connector+0x48/0x80 [ 11.410865] ? fsnotify_destroy_marks+0x29/0x150 [ 11.410912] __sys_sendmsg+0x71/0xd0 [ 11.410956] do_syscall_64+0xa4/0xfd0 [ 11.411003] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 11.411062] RIP: 0033:0x7f77550ae1d7 [ 11.411102] 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 [ 11.411287] RSP: 002b:00007fff09dc2d08 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 11.411382] RAX: ffffffffffffffda RBX: 00007fff09dc3430 RCX: 00007f77550ae1d7 [ 11.411458] RDX: 0000000000000000 RSI: 00007fff09dc2d70 RDI: 0000000000000005 [ 11.411532] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 11.411607] R10: 00007f7754faaf60 R11: 0000000000000246 R12: 0000000000000002 [ 11.411686] R13: 00000000690de870 R14: 0000000000499600 R15: 0000000000000000 [ 11.411759] [ 11.411789] ---[ end trace 0000000000000000 ]--- [ 11.412377] ip (624) used greatest stack depth: 11744 bytes left