[ 2.387510] ------------[ cut here ]------------ [ 2.387625] refcount_t: underflow; use-after-free. [ 2.387704] WARNING: CPU: 2 PID: 255 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 2.387790] Modules linked in: [ 2.387844] CPU: 2 UID: 0 PID: 255 Comm: ip Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 2.387947] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 2.388019] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 2.388080] Code: 90 e8 e8 54 ba ff 90 0f 0b 90 90 c3 80 3d 00 e6 2b 01 00 75 89 c6 05 f7 e5 2b 01 01 90 48 c7 c7 f8 48 95 90 e8 c5 54 ba ff 90 <0f> 0b 90 90 c3 80 3d db e5 2b 01 00 0f 85 62 ff ff ff c6 05 ce e5 [ 2.388257] RSP: 0018:ffffb922c05ef730 EFLAGS: 00010282 [ 2.388319] RAX: 0000000000000000 RBX: ffffb922c05ef740 RCX: 00000000ffffdfff [ 2.388394] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 2.388479] RBP: ffffb922c05ef238 R08: ffffffff9115ba28 R09: 00000000ffffdfff [ 2.388554] R10: ffffffff9107ba40 R11: ffffffff9112ba40 R12: dead000000000122 [ 2.388629] R13: 00000000fffb74f6 R14: 0000000000000001 R15: ffff91d18432d000 [ 2.388705] FS: 00007fa2edda0800(0000) GS:ffff91d22d491000(0000) knlGS:0000000000000000 [ 2.388782] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 2.388849] CR2: 00000000004e6e90 CR3: 00000000043b6005 CR4: 0000000000772ef0 [ 2.388928] PKRU: 55555554 [ 2.388980] Call Trace: [ 2.389024] [ 2.389066] netdev_run_todo+0x21a/0x550 [ 2.389122] rtnl_dellink+0x15b/0x350 [ 2.389181] ? virtio_fs_enqueue_req+0x352/0x570 [ 2.389249] ? netdev_run_todo+0x63/0x550 [ 2.389301] ? rtnl_bridge_getlink+0x1a0/0x1a0 [ 2.389363] rtnetlink_rcv_msg+0x358/0x400 [ 2.389422] ? get_page_from_freelist+0x15b4/0x1770 [ 2.389492] ? rtnl_calcit.isra.0+0x110/0x110 [ 2.389553] netlink_rcv_skb+0x57/0x100 [ 2.389608] netlink_unicast+0x252/0x380 [ 2.389660] ? __alloc_skb+0xdb/0x190 [ 2.389713] netlink_sendmsg+0x1be/0x3e0 [ 2.389766] ____sys_sendmsg+0x132/0x260 [ 2.389820] ? copy_msghdr_from_user+0x6c/0xa0 [ 2.389902] ___sys_sendmsg+0x87/0xd0 [ 2.389953] ? do_wp_page+0x369/0xe90 [ 2.390006] ? ___pte_offset_map+0x1b/0xd0 [ 2.390064] ? nfulnl_rcv_nl_event+0x36/0xa0 [ 2.390126] ? fsnotify_grab_connector+0x48/0x80 [ 2.390188] ? fsnotify_destroy_marks+0x29/0x150 [ 2.390254] __sys_sendmsg+0x71/0xd0 [ 2.390306] do_syscall_64+0xa4/0xfd0 [ 2.390371] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 2.390436] RIP: 0033:0x7fa2edf6e1d7 [ 2.390494] 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 [ 2.390639] RSP: 002b:00007fffb0fbdbb8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 2.390736] RAX: ffffffffffffffda RBX: 00007fffb0fbe2f0 RCX: 00007fa2edf6e1d7 [ 2.390810] RDX: 0000000000000000 RSI: 00007fffb0fbdc20 RDI: 0000000000000003 [ 2.390885] RBP: 0000000000000001 R08: 0000000000000003 R09: 0000000000000078 [ 2.390964] R10: 00007fa2ede6a510 R11: 0000000000000246 R12: 0000000000000001 [ 2.391055] R13: 00000000690dfbc1 R14: 0000000000499600 R15: 0000000000000000 [ 2.391142] [ 2.391184] ---[ end trace 0000000000000000 ]--- [ 2.391779] ip (255) used greatest stack depth: 11744 bytes left [ 3.590131] MACsec IEEE 802.1AE [ 3.780577] gre: GRE over IPv4 demultiplexer driver [ 3.782245] ip_gre: GRE over IPv4 tunneling driver [ 3.948445] ip6_gre: GRE over IPv6 tunneling driver [ 4.159937] IPsec XFRM device driver [ 5.943488] CAN device driver interface [ 5.944874] vxcan: Virtual CAN Tunnel driver