[ 2.128162] ip (249) used greatest stack depth: 12344 bytes left [ 2.313659] 8021q: 802.1Q VLAN Support v1.8 [ 13.652457] ------------[ cut here ]------------ [ 13.652676] refcount_t: underflow; use-after-free. [ 13.652793] WARNING: CPU: 2 PID: 508 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 13.652921] Modules linked in: 8021q vrf veth [ 13.653066] CPU: 2 UID: 0 PID: 508 Comm: ip Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 13.653197] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 13.653297] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 13.653384] Code: bc 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 bc 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 [ 13.653606] RSP: 0018:ffffb4e4409bf730 EFLAGS: 00010282 [ 13.653696] RAX: 0000000000000000 RBX: ffffb4e4409bf740 RCX: 00000000ffffdfff [ 13.653807] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 13.653923] RBP: ffffb4e4409bf248 R08: ffffffffbc756a28 R09: 00000000ffffdfff [ 13.654034] R10: ffffffffbc676a40 R11: ffffffffbc726a40 R12: dead000000000122 [ 13.654144] R13: 00000000fffba0f2 R14: 0000000000000001 R15: ffff952e83e7b000 [ 13.654256] FS: 00007f6f4efc1800(0000) GS:ffff952f01ed9000(0000) knlGS:0000000000000000 [ 13.654366] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 13.654470] CR2: 000055a7954781c8 CR3: 0000000006c9b001 CR4: 0000000000772ef0 [ 13.654582] PKRU: 55555554 [ 13.654641] Call Trace: [ 13.654704] [ 13.654766] netdev_run_todo+0x21a/0x550 [ 13.654851] rtnl_dellink+0x15b/0x350 [ 13.654932] ? virtio_fs_enqueue_req+0x352/0x570 [ 13.655025] ? netdev_run_todo+0x63/0x550 [ 13.655102] ? rtnl_bridge_getlink+0x1a0/0x1a0 [ 13.655191] rtnetlink_rcv_msg+0x358/0x400 [ 13.655266] ? get_page_from_freelist+0x15b4/0x1770 [ 13.655363] ? rtnl_calcit.isra.0+0x110/0x110 [ 13.655457] netlink_rcv_skb+0x57/0x100 [ 13.655543] netlink_unicast+0x252/0x380 [ 13.655619] ? __alloc_skb+0xdb/0x190 [ 13.655697] netlink_sendmsg+0x1be/0x3e0 [ 13.655788] ____sys_sendmsg+0x132/0x260 [ 13.655871] ? copy_msghdr_from_user+0x6c/0xa0 [ 13.655960] ___sys_sendmsg+0x87/0xd0 [ 13.656039] ? do_wp_page+0x369/0xe90 [ 13.656117] ? ___pte_offset_map+0x1b/0xd0 [ 13.656194] ? nfulnl_rcv_nl_event+0x36/0xa0 [ 13.656286] ? fsnotify_grab_connector+0x48/0x80 [ 13.656376] ? fsnotify_destroy_marks+0x29/0x150 [ 13.656475] __sys_sendmsg+0x71/0xd0 [ 13.656552] do_syscall_64+0xa4/0xfd0 [ 13.656630] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 13.656722] RIP: 0033:0x7f6f4f18f1d7 [ 13.656797] 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 [ 13.657014] RSP: 002b:00007ffece3a0408 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 13.657128] RAX: ffffffffffffffda RBX: 00007ffece3a0b30 RCX: 00007f6f4f18f1d7 [ 13.657239] RDX: 0000000000000000 RSI: 00007ffece3a0470 RDI: 0000000000000005 [ 13.657348] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 13.657461] R10: 00007f6f4f08bf60 R11: 0000000000000246 R12: 0000000000000002 [ 13.657569] R13: 00000000690dee31 R14: 0000000000499600 R15: 0000000000000000 [ 13.657688] [ 13.657749] ---[ end trace 0000000000000000 ]--- [ 13.658537] ip (508) used greatest stack depth: 11744 bytes left