netlink: 12 bytes leftover after parsing attributes in process `syz.3.295'.
------------[ cut here ]------------
!sock_allow_reclassification(sk)
WARNING: drivers/block/nbd.c:1249 at nbd_reclassify_socket drivers/block/nbd.c:1249 [inline], CPU#1: syz.3.295/6841
WARNING: drivers/block/nbd.c:1249 at nbd_add_socket+0x14c/0x10c0 drivers/block/nbd.c:1293, CPU#1: syz.3.295/6841
Modules linked in:
CPU: 1 UID: 0 PID: 6841 Comm: syz.3.295 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:nbd_reclassify_socket drivers/block/nbd.c:1249 [inline]
RIP: 0010:nbd_add_socket+0x14c/0x10c0 drivers/block/nbd.c:1293
Code: 08 3c 03 0f 8e 0d 0d 00 00 45 8b bc 24 c8 01 00 00 31 ff 44 89 fe e8 93 d3 c0 fb 45 85 ff 0f 84 b3 05 00 00 e8 d5 d8 c0 fb 90 <0f> 0b 90 e8 cc d8 c0 fb 48 8d 83 88 02 00 00 48 89 c2 48 89 44 24
RSP: 0018:ffffc900036a73c0 EFLAGS: 00010283
RAX: 00000000000048a8 RBX: ffff888028453800 RCX: ffffc90006d53000
RDX: 0000000000080000 RSI: ffffffff8648978b RDI: ffff888033d28000
RBP: ffff888033cc9c00 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: ffff8880547f0d00
R13: ffff8880547f0ec8 R14: ffff8880764db9c0 R15: 0000000000000001
FS:  00007fa752be16c0(0000) GS:ffff888124432000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b33208ff8 CR3: 000000004e394000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 nbd_genl_connect+0xac9/0x1a40 drivers/block/nbd.c:2254
 genl_family_rcv_msg_doit+0x214/0x300 net/netlink/genetlink.c:1114
 genl_family_rcv_msg net/netlink/genetlink.c:1194 [inline]
 genl_rcv_msg+0x560/0x800 net/netlink/genetlink.c:1209
 netlink_rcv_skb+0x159/0x420 net/netlink/af_netlink.c:2556
 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1218
 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
 netlink_unicast+0x585/0x850 net/netlink/af_netlink.c:1345
 netlink_sendmsg+0x8b0/0xda0 net/netlink/af_netlink.c:1900
 sock_sendmsg_nosec net/socket.c:775 [inline]
 __sock_sendmsg net/socket.c:790 [inline]
 ____sys_sendmsg+0x9e1/0xb70 net/socket.c:2684
 ___sys_sendmsg+0x190/0x1e0 net/socket.c:2738
 __sys_sendmsg+0x160/0x210 net/socket.c:2770
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x115/0x870 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa751d9ce59
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:00007fa752be1028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fa752015fa0 RCX: 00007fa751d9ce59
RDX: 0000000000004000 RSI: 00002000000027c0 RDI: 0000000000000006
RBP: 00007fa751e32e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fa752016038 R14: 00007fa752015fa0 R15: 00007ffd27194408
 </TASK>