[ 23.814888] ------------[ cut here ]------------ [ 23.815029] refcount_t: underflow; use-after-free. [ 23.815123] WARNING: CPU: 2 PID: 475 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 23.815227] Modules linked in: vrf veth [ 23.815291] CPU: 2 UID: 0 PID: 475 Comm: ip Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 23.815403] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 23.815492] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 23.815570] Code: 8c 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 8c 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 [ 23.815757] RSP: 0018:ffffad49809a7730 EFLAGS: 00010282 [ 23.815830] RAX: 0000000000000000 RBX: ffffad49809a7740 RCX: 00000000ffffdfff [ 23.815936] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 23.816030] RBP: ffffad49809a7248 R08: ffffffff8c556a28 R09: 00000000ffffdfff [ 23.816129] R10: ffffffff8c476a40 R11: ffffffff8c526a40 R12: dead000000000122 [ 23.816224] R13: 00000000fffbc8a0 R14: 0000000000000001 R15: ffff9d31c112c000 [ 23.816320] FS: 00007fe0a418e800(0000) GS:ffff9d32720d9000(0000) knlGS:0000000000000000 [ 23.816418] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 23.816501] CR2: 00000000004e5458 CR3: 00000000032d8003 CR4: 0000000000772ef0 [ 23.816595] PKRU: 55555554 [ 23.816642] Call Trace: [ 23.816695] [ 23.816742] netdev_run_todo+0x21a/0x550 [ 23.816811] rtnl_dellink+0x15b/0x350 [ 23.816884] ? virtio_fs_enqueue_req+0x352/0x570 [ 23.816963] ? netdev_run_todo+0x63/0x550 [ 23.817025] ? rtnl_bridge_getlink+0x1a0/0x1a0 [ 23.817097] rtnetlink_rcv_msg+0x358/0x400 [ 23.817158] ? get_page_from_freelist+0x15b4/0x1770 [ 23.817234] ? rtnl_calcit.isra.0+0x110/0x110 [ 23.817305] netlink_rcv_skb+0x57/0x100 [ 23.817371] netlink_unicast+0x252/0x380 [ 23.817432] ? __alloc_skb+0xdb/0x190 [ 23.817495] netlink_sendmsg+0x1be/0x3e0 [ 23.817556] ____sys_sendmsg+0x132/0x260 [ 23.817620] ? copy_msghdr_from_user+0x6c/0xa0 [ 23.817692] ___sys_sendmsg+0x87/0xd0 [ 23.817754] ? do_wp_page+0x369/0xe90 [ 23.817817] ? ___pte_offset_map+0x1b/0xd0 [ 23.817885] ? nfulnl_rcv_nl_event+0x36/0xa0 [ 23.817966] ? fsnotify_grab_connector+0x48/0x80 [ 23.818040] ? fsnotify_destroy_marks+0x29/0x150 [ 23.818112] __sys_sendmsg+0x71/0xd0 [ 23.818176] do_syscall_64+0xa4/0xfd0 [ 23.818240] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 23.818313] RIP: 0033:0x7fe0a435c1d7 [ 23.818378] 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 [ 23.818567] RSP: 002b:00007ffd4b264df8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 23.818668] RAX: ffffffffffffffda RBX: 00007ffd4b265520 RCX: 00007fe0a435c1d7 [ 23.818761] RDX: 0000000000000000 RSI: 00007ffd4b264e60 RDI: 0000000000000005 [ 23.818863] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 23.818958] R10: 00007fe0a4258f60 R11: 0000000000000246 R12: 0000000000000002 [ 23.819051] R13: 00000000690de720 R14: 0000000000499600 R15: 0000000000000000 [ 23.819149] [ 23.819198] ---[ end trace 0000000000000000 ]--- [ 23.819778] ip (475) used greatest stack depth: 11744 bytes left