[ 2.692325] 8021q: 802.1Q VLAN Support v1.8 [ 2.792425] gre: GRE over IPv4 demultiplexer driver [ 2.794373] ip_gre: GRE over IPv4 tunneling driver [ 3.541220] GACT probability NOT on [ 3.542980] tc (373) used greatest stack depth: 11840 bytes left [ 13.208270] ------------[ cut here ]------------ [ 13.208367] refcount_t: underflow; use-after-free. [ 13.208461] WARNING: CPU: 0 PID: 651 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 13.208540] Modules linked in: act_gact cls_flower sch_ingress ip_gre gre 8021q vrf veth [ 13.208626] CPU: 0 UID: 0 PID: 651 Comm: ip Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 13.208692] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 13.208746] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 13.208792] Code: a4 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 71 a4 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 [ 13.208916] RSP: 0018:ffffa294c0b7f730 EFLAGS: 00010282 [ 13.208954] RAX: 0000000000000000 RBX: ffffa294c0b7f740 RCX: 00000000ffffdfff [ 13.209014] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 13.209078] RBP: ffffa294c0b7f248 R08: ffffffffa4b56a28 R09: 00000000ffffdfff [ 13.209133] R10: ffffffffa4a76a40 R11: ffffffffa4b26a40 R12: dead000000000122 [ 13.209187] R13: 00000000fffb9f34 R14: 0000000000000001 R15: ffff936ac5c83000 [ 13.209244] FS: 00007f8e4e5c4800(0000) GS:ffff936b599d9000(0000) knlGS:0000000000000000 [ 13.209302] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 13.209346] CR2: 00000000004e7438 CR3: 0000000005d09005 CR4: 0000000000772ef0 [ 13.209396] PKRU: 55555554 [ 13.209417] Call Trace: [ 13.209442] [ 13.209464] netdev_run_todo+0x21a/0x550 [ 13.209559] rtnl_dellink+0x15b/0x350 [ 13.209622] ? virtio_fs_enqueue_req+0x352/0x570 [ 13.209681] ? netdev_run_todo+0x63/0x550 [ 13.209718] ? rtnl_bridge_getlink+0x1a0/0x1a0 [ 13.209769] rtnetlink_rcv_msg+0x358/0x400 [ 13.209809] ? get_page_from_freelist+0x15b4/0x1770 [ 13.209869] ? rtnl_calcit.isra.0+0x110/0x110 [ 13.209916] netlink_rcv_skb+0x57/0x100 [ 13.209969] netlink_unicast+0x252/0x380 [ 13.210030] ? __alloc_skb+0xdb/0x190 [ 13.210074] netlink_sendmsg+0x1be/0x3e0 [ 13.210098] ____sys_sendmsg+0x132/0x260 [ 13.210140] ? copy_msghdr_from_user+0x6c/0xa0 [ 13.210181] ___sys_sendmsg+0x87/0xd0 [ 13.210215] ? do_wp_page+0x369/0xe90 [ 13.210261] ? nfulnl_rcv_nl_event+0x36/0xa0 [ 13.210308] ? fsnotify_grab_connector+0x48/0x80 [ 13.210353] ? fsnotify_destroy_marks+0x29/0x150 [ 13.210392] __sys_sendmsg+0x71/0xd0 [ 13.210425] do_syscall_64+0xa4/0xfd0 [ 13.210465] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 13.210515] RIP: 0033:0x7f8e4e7921d7 [ 13.210551] 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 [ 13.210672] RSP: 002b:00007ffe679890a8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 13.210739] RAX: ffffffffffffffda RBX: 00007ffe679897d0 RCX: 00007f8e4e7921d7 [ 13.210795] RDX: 0000000000000000 RSI: 00007ffe67989110 RDI: 0000000000000005 [ 13.210860] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 13.210915] R10: 00007f8e4e68ef60 R11: 0000000000000246 R12: 0000000000000002 [ 13.210966] R13: 00000000690dee2c R14: 0000000000499600 R15: 0000000000000000 [ 13.211038] [ 13.211061] ---[ end trace 0000000000000000 ]--- [ 13.211635] ip (651) used greatest stack depth: 11744 bytes left