[ 2.165019] ip (248) used greatest stack depth: 12360 bytes left [ 2.221355] ip (255) used greatest stack depth: 12296 bytes left [ 115.526957] ------------[ cut here ]------------ [ 115.527115] refcount_t: underflow; use-after-free. [ 115.527210] WARNING: CPU: 2 PID: 1736 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 115.527370] Modules linked in: vrf veth [ 115.527447] CPU: 2 UID: 0 PID: 1736 Comm: ip Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 115.527556] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 115.527641] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 115.527716] Code: 8b 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 8b 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 [ 115.527914] RSP: 0018:ffffbf1f81657730 EFLAGS: 00010282 [ 115.527990] RAX: 0000000000000000 RBX: ffffbf1f81657740 RCX: 00000000ffffdfff [ 115.528088] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 115.528185] RBP: ffffbf1f81657248 R08: ffffffff8b556a28 R09: 00000000ffffdfff [ 115.528283] R10: ffffffff8b476a40 R11: ffffffff8b526a40 R12: dead000000000122 [ 115.528382] R13: 00000000fffd2ee1 R14: 0000000000000001 R15: ffff9816843ec000 [ 115.528480] FS: 00007f2026a9b800(0000) GS:ffff9817330d9000(0000) knlGS:0000000000000000 [ 115.528581] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 115.528666] CR2: 00000000004e5ea0 CR3: 0000000001919004 CR4: 0000000000772ef0 [ 115.528764] PKRU: 55555554 [ 115.528795] Call Trace: [ 115.528847] [ 115.528903] netdev_run_todo+0x21a/0x550 [ 115.528988] rtnl_dellink+0x15b/0x350 [ 115.529061] ? virtio_fs_enqueue_req+0x352/0x570 [ 115.529140] ? netdev_run_todo+0x63/0x550 [ 115.529204] ? rtnl_bridge_getlink+0x1a0/0x1a0 [ 115.529279] rtnetlink_rcv_msg+0x358/0x400 [ 115.529345] ? get_page_from_freelist+0x15b4/0x1770 [ 115.529424] ? rtnl_calcit.isra.0+0x110/0x110 [ 115.529498] netlink_rcv_skb+0x57/0x100 [ 115.529569] netlink_unicast+0x252/0x380 [ 115.529633] ? __alloc_skb+0xdb/0x190 [ 115.529698] netlink_sendmsg+0x1be/0x3e0 [ 115.529761] ____sys_sendmsg+0x132/0x260 [ 115.529828] ? copy_msghdr_from_user+0x6c/0xa0 [ 115.529916] ___sys_sendmsg+0x87/0xd0 [ 115.529980] ? do_wp_page+0x369/0xe90 [ 115.530047] ? ___pte_offset_map+0x1b/0xd0 [ 115.530111] ? nfulnl_rcv_nl_event+0x36/0xa0 [ 115.530190] ? fsnotify_grab_connector+0x48/0x80 [ 115.530266] ? fsnotify_destroy_marks+0x29/0x150 [ 115.530344] __sys_sendmsg+0x71/0xd0 [ 115.530409] do_syscall_64+0xa4/0xfd0 [ 115.530479] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 115.530555] RIP: 0033:0x7f2026c691d7 [ 115.530625] 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 [ 115.530812] RSP: 002b:00007ffc5152d6e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 115.530914] RAX: ffffffffffffffda RBX: 00007ffc5152de10 RCX: 00007f2026c691d7 [ 115.531009] RDX: 0000000000000000 RSI: 00007ffc5152d750 RDI: 0000000000000005 [ 115.531106] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 115.531202] R10: 00007f2026b65f60 R11: 0000000000000246 R12: 0000000000000002 [ 115.531299] R13: 00000000690de557 R14: 0000000000499600 R15: 0000000000000000 [ 115.531395] [ 115.531445] ---[ end trace 0000000000000000 ]--- [ 115.532163] ip (1736) used greatest stack depth: 11744 bytes left