netlink: 'syz-executor1': attribute type 1 has an invalid length.
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BUG: KASAN: alloca-out-of-bounds in do_IRQ+0x158/0x190 arch/x86/kernel/irq.c:236
Read of size 8 at addr ffff88018703f2e0 by task syz-executor1/17294

CPU: 0 PID: 17294 Comm: syz-executor1 Not tainted 4.16.0+ #2
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1b9/0x294 lib/dump_stack.c:113
 print_address_description+0x6c/0x20b mm/kasan/report.c:256
 kasan_report_error mm/kasan/report.c:354 [inline]
 kasan_report.cold.7+0xac/0x2f5 mm/kasan/report.c:412
 __asan_report_load8_noabort+0x14/0x20 mm/kasan/report.c:433
 do_IRQ+0x158/0x190 arch/x86/kernel/irq.c:236
 common_interrupt+0xf/0xf arch/x86/entry/entry_64.S:641
 </IRQ>
RIP: 0010:rcu_lock_release include/linux/rcupdate.h:251 [inline]
RIP: 0010:rcu_read_unlock include/linux/rcupdate.h:688 [inline]
RIP: 0010:nfnetlink_rcv_msg+0x6a7/0xfe0 net/netfilter/nfnetlink.c:196
RSP: 0018:ffff88018703f310 EFLAGS: 00000216 ORIG_RAX: ffffffffffffffd9
RAX: 0000000000040000 RBX: ffffffff8606e8d0 RCX: ffffc90002ce7000
RDX: 0000000000002dcd RSI: ffffffff85ec18a9 RDI: ffff88018703f260
RBP: ffff88018703f480 R08: ffff8801ae44e200 R09: fffffbfff15dc406
R10: fffffbfff15dc406 R11: ffffffff8aee2037 R12: 0000000000000000
R13: 0000000000000003 R14: 0000000000000000 R15: ffff8801ab2500c0
 netlink_rcv_skb+0x172/0x440 net/netlink/af_netlink.c:2448
 nfnetlink_rcv+0x1fe/0x1ba0 net/netfilter/nfnetlink.c:513
 netlink_unicast_kernel net/netlink/af_netlink.c:1310 [inline]
 netlink_unicast+0x58b/0x740 net/netlink/af_netlink.c:1336
 netlink_sendmsg+0x9f0/0xfa0 net/netlink/af_netlink.c:1901
 sock_sendmsg_nosec net/socket.c:629 [inline]
 sock_sendmsg+0xd5/0x120 net/socket.c:639
 ___sys_sendmsg+0x805/0x940 net/socket.c:2117
 __sys_sendmsg+0x115/0x270 net/socket.c:2155
 SYSC_sendmsg net/socket.c:2164 [inline]
 SyS_sendmsg+0x29/0x30 net/socket.c:2162
 do_syscall_64+0x29e/0x9d0 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x455319
RSP: 002b:00007f20a4ddcc68 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f20a4ddd6d4 RCX: 0000000000455319
RDX: 0000000000000000 RSI: 0000000020d65000 RDI: 0000000000000013
RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000000004f0 R14: 00000000006fa720 R15: 0000000000000000

The buggy address belongs to the page:
page:ffffea00061c0fc0 count:0 mapcount:0 mapping:0000000000000000 index:0x0
flags: 0x2fffc0000000000()
raw: 02fffc0000000000 0000000000000000 0000000000000000 00000000ffffffff
raw: 0000000000000000 ffffea00061c0101 0000000000000000 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff88018703f180: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff88018703f200: 00 00 00 00 00 00 00 00 00 00 00 00 ca ca ca ca
>ffff88018703f280: 00 00 00 00 00 00 00 00 00 00 00 cb cb cb cb cb
                                                       ^
 ffff88018703f300: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff88018703f380: 00 00 00 00 00 00 00 f1 f1 f1 f1 f8 f2 f2 f2 f2
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