[ 2.813803] 8021q: 802.1Q VLAN Support v1.8 [ 2.863905] gre: GRE over IPv4 demultiplexer driver [ 2.869321] ip6_gre: GRE over IPv6 tunneling driver [ 8.442736] GACT probability NOT on [ 8.444030] tc (405) used greatest stack depth: 11840 bytes left [ 11.317025] ------------[ cut here ]------------ [ 11.317140] refcount_t: underflow; use-after-free. [ 11.317208] WARNING: CPU: 3 PID: 625 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 11.317285] Modules linked in: act_gact cls_flower sch_ingress ip6_gre ip6_tunnel tunnel6 gre 8021q vrf veth [ 11.317380] CPU: 3 UID: 0 PID: 625 Comm: ip Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 11.317446] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 11.317498] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 11.317549] Code: ba 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 ba 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 [ 11.317693] RSP: 0018:ffffb3f640ce7730 EFLAGS: 00010282 [ 11.317734] RAX: 0000000000000000 RBX: ffffb3f640ce7740 RCX: 00000000ffffdfff [ 11.317802] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 11.317855] RBP: ffffb3f640ce7248 R08: ffffffffba756a28 R09: 00000000ffffdfff [ 11.317909] R10: ffffffffba676a40 R11: ffffffffba726a40 R12: dead000000000122 [ 11.317979] R13: 00000000fffb97d6 R14: 0000000000000001 R15: ffff991806929000 [ 11.318036] FS: 00007f8233d54800(0000) GS:ffff991883f59000(0000) knlGS:0000000000000000 [ 11.318095] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 11.318140] CR2: 00000000004e7408 CR3: 000000000824a004 CR4: 0000000000772ef0 [ 11.318208] PKRU: 55555554 [ 11.318231] Call Trace: [ 11.318257] [ 11.318277] netdev_run_todo+0x21a/0x550 [ 11.318330] rtnl_dellink+0x15b/0x350 [ 11.318370] ? virtio_fs_enqueue_req+0x352/0x570 [ 11.318425] ? netdev_run_todo+0x63/0x550 [ 11.318464] ? rtnl_bridge_getlink+0x1a0/0x1a0 [ 11.318516] rtnetlink_rcv_msg+0x358/0x400 [ 11.318548] ? get_page_from_freelist+0x15b4/0x1770 [ 11.318592] ? rtnl_calcit.isra.0+0x110/0x110 [ 11.318635] netlink_rcv_skb+0x57/0x100 [ 11.318683] netlink_unicast+0x252/0x380 [ 11.318714] ? __alloc_skb+0xdb/0x190 [ 11.318759] netlink_sendmsg+0x1be/0x3e0 [ 11.318799] ____sys_sendmsg+0x132/0x260 [ 11.318835] ? copy_msghdr_from_user+0x6c/0xa0 [ 11.318879] ___sys_sendmsg+0x87/0xd0 [ 11.318908] ? do_wp_page+0x369/0xe90 [ 11.318946] ? nfulnl_rcv_nl_event+0x36/0xa0 [ 11.318994] ? fsnotify_grab_connector+0x48/0x80 [ 11.319036] ? fsnotify_destroy_marks+0x29/0x150 [ 11.319075] __sys_sendmsg+0x71/0xd0 [ 11.319108] do_syscall_64+0xa4/0xfd0 [ 11.319143] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 11.319190] RIP: 0033:0x7f8233f221d7 [ 11.319237] 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 [ 11.319365] RSP: 002b:00007ffcb7b3bba8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 11.319420] RAX: ffffffffffffffda RBX: 00007ffcb7b3c2d0 RCX: 00007f8233f221d7 [ 11.319474] RDX: 0000000000000000 RSI: 00007ffcb7b3bc10 RDI: 0000000000000005 [ 11.319556] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 11.319615] R10: 00007f8233e1ef60 R11: 0000000000000246 R12: 0000000000000002 [ 11.319672] R13: 00000000690dee53 R14: 0000000000499600 R15: 0000000000000000 [ 11.319727] [ 11.319757] ---[ end trace 0000000000000000 ]--- [ 11.320379] ip (625) used greatest stack depth: 11744 bytes left