netlink: 'syz.0.1856': attribute type 10 has an invalid length.
------------[ cut here ]------------
kobject: (ffff8881baedb000): attempted to be registered with empty name!
WARNING: lib/kobject.c:221 at kobject_add_internal+0x13f/0xcd0, CPU#1: syz.0.1856/11683
Modules linked in:
CPU: 1 UID: 0 PID: 11683 Comm: syz.0.1856 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:kobject_add_internal+0x142/0xcd0
Code: e9 e4 00 00 00 e8 ee f6 e4 f5 b8 fe ff ff ff e9 fb 06 00 00 e8 df f6 e4 f5 eb 05 e8 d8 f6 e4 f5 48 8d 3d d1 47 aa 05 48 89 de <67> 48 0f b9 3a b8 ea ff ff ff e9 d6 06 00 00 4c 8d 73 20 4d 89 f5
RSP: 0018:ffffc900037ff048 EFLAGS: 00010283
RAX: ffffffff8be388e8 RBX: ffff8881baedb000 RCX: 0000000000080000
RDX: ffffc900081d9000 RSI: ffff8881baedb000 RDI: ffffffff918dd0c0
RBP: 0000000000000000 R08: ffffc900037ff117 R09: 0000000000000000
R10: ffffc900037ff100 R11: fffff520006ffe23 R12: 1ffff110375db600
R13: dffffc0000000000 R14: ffff88816974c980 R15: dffffc0000000000
FS:  00007fe7b15046c0(0000) GS:ffff8882a7cab000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6bbe3453b0 CR3: 00000001bcbfa000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000008d24
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <TASK>
 kobject_add+0x163/0x240
 device_add+0x3fa/0xb80
 vdpasim_net_dev_add+0x2c0/0x3d0
 vdpa_nl_cmd_dev_add_set_doit+0xa8b/0xbd0
 genl_family_rcv_msg_doit+0x233/0x340
 genl_rcv_msg+0x614/0x7a0
 netlink_rcv_skb+0x226/0x4a0
 genl_rcv+0x28/0x40
 netlink_unicast+0x7bd/0x940
 netlink_sendmsg+0x813/0xb40
 sock_sendmsg_nosec+0x13a/0x180
 ____sys_sendmsg+0x54e/0x850
 ___sys_sendmsg+0x2a5/0x360
 __x64_sys_sendmsg+0x1b1/0x290
 do_syscall_64+0x166/0x520
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe7b059e559
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fe7b1504028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fe7b0825fa0 RCX: 00007fe7b059e559
RDX: 0000000000000000 RSI: 0000200000000000 RDI: 000000000000000e
RBP: 00007fe7b06358b0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fe7b0826038 R14: 00007fe7b0825fa0 R15: 00007ffc5a9cb6a8
 </TASK>
