[ 23.890719] ------------[ cut here ]------------ [ 23.890819] refcount_t: underflow; use-after-free. [ 23.890894] WARNING: CPU: 0 PID: 474 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 23.890987] Modules linked in: vrf veth [ 23.891037] CPU: 0 UID: 0 PID: 474 Comm: ip Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 23.891132] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 23.891197] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 23.891255] Code: bb 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 11 bb 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 [ 23.891442] RSP: 0018:ffffb780009a7730 EFLAGS: 00010282 [ 23.891494] RAX: 0000000000000000 RBX: ffffb780009a7740 RCX: 00000000ffffdfff [ 23.891578] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 23.891657] RBP: ffffb780009a7248 R08: ffffffffbb556a28 R09: 00000000ffffdfff [ 23.891742] R10: ffffffffbb476a40 R11: ffffffffbb526a40 R12: dead000000000122 [ 23.891825] R13: 00000000fffbc8ee R14: 0000000000000001 R15: ffff894c01069000 [ 23.891904] FS: 00007f1f5071b800(0000) GS:ffff894c82fd9000(0000) knlGS:0000000000000000 [ 23.891980] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 23.892044] CR2: 00000000004e5458 CR3: 000000000374b001 CR4: 0000000000772ef0 [ 23.892122] PKRU: 55555554 [ 23.892147] Call Trace: [ 23.892176] [ 23.892207] netdev_run_todo+0x21a/0x550 [ 23.892256] rtnl_dellink+0x15b/0x350 [ 23.892309] ? virtio_fs_enqueue_req+0x352/0x570 [ 23.892371] ? netdev_run_todo+0x63/0x550 [ 23.892409] ? rtnl_bridge_getlink+0x1a0/0x1a0 [ 23.892462] rtnetlink_rcv_msg+0x358/0x400 [ 23.892509] ? get_page_from_freelist+0x15b4/0x1770 [ 23.892568] ? rtnl_calcit.isra.0+0x110/0x110 [ 23.892626] netlink_rcv_skb+0x57/0x100 [ 23.892683] netlink_unicast+0x252/0x380 [ 23.892728] ? __alloc_skb+0xdb/0x190 [ 23.892777] netlink_sendmsg+0x1be/0x3e0 [ 23.892817] ____sys_sendmsg+0x132/0x260 [ 23.892862] ? copy_msghdr_from_user+0x6c/0xa0 [ 23.892921] ___sys_sendmsg+0x87/0xd0 [ 23.892967] ? do_wp_page+0x369/0xe90 [ 23.893011] ? ___pte_offset_map+0x1b/0xd0 [ 23.893051] ? nfulnl_rcv_nl_event+0x36/0xa0 [ 23.893111] ? fsnotify_grab_connector+0x48/0x80 [ 23.893169] ? fsnotify_destroy_marks+0x29/0x150 [ 23.893222] __sys_sendmsg+0x71/0xd0 [ 23.893268] do_syscall_64+0xa4/0xfd0 [ 23.893315] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 23.893373] RIP: 0033:0x7f1f508e91d7 [ 23.893413] 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 [ 23.893599] RSP: 002b:00007fff9da195a8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 23.893683] RAX: ffffffffffffffda RBX: 00007fff9da19cd0 RCX: 00007f1f508e91d7 [ 23.893767] RDX: 0000000000000000 RSI: 00007fff9da19610 RDI: 0000000000000005 [ 23.893844] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 23.893922] R10: 00007f1f507e5f60 R11: 0000000000000246 R12: 0000000000000002 [ 23.893999] R13: 00000000690ded49 R14: 0000000000499600 R15: 0000000000000000 [ 23.894079] [ 23.894102] ---[ end trace 0000000000000000 ]--- [ 23.894718] ip (474) used greatest stack depth: 11744 bytes left