netlink: 'syz-executor5': attribute type 15 has an invalid length.
INFO: rcu_sched self-detected stall on CPU
	0-....: (124999 ticks this GP) idle=bee/140000000000001/0 softirq=48001/48001 fqs=31231 
	 (t=125000 jiffies g=27110 c=27109 q=568)
NMI backtrace for cpu 0
CPU: 0 PID: 22801 Comm: syz-executor3 Not tainted 4.15.0-rc9+ #209
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x194/0x257 lib/dump_stack.c:53
 nmi_cpu_backtrace+0x1d2/0x210 lib/nmi_backtrace.c:103
 nmi_trigger_cpumask_backtrace+0x122/0x180 lib/nmi_backtrace.c:62
 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38
 trigger_single_cpu_backtrace include/linux/nmi.h:156 [inline]
 rcu_dump_cpu_stacks+0x186/0x1d9 kernel/rcu/tree.c:1459
 print_cpu_stall kernel/rcu/tree.c:1608 [inline]
 check_cpu_stall.isra.61+0xbb8/0x15b0 kernel/rcu/tree.c:1676
 __rcu_pending kernel/rcu/tree.c:3440 [inline]
 rcu_pending kernel/rcu/tree.c:3502 [inline]
 rcu_check_callbacks+0x256/0xd00 kernel/rcu/tree.c:2842
 update_process_times+0x30/0x60 kernel/time/timer.c:1628
 tick_sched_handle+0x85/0x160 kernel/time/tick-sched.c:162
 tick_sched_timer+0x42/0x120 kernel/time/tick-sched.c:1194
 __run_hrtimer kernel/time/hrtimer.c:1211 [inline]
 __hrtimer_run_queues+0x358/0xe20 kernel/time/hrtimer.c:1275
 hrtimer_interrupt+0x1c2/0x5e0 kernel/time/hrtimer.c:1309
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1025 [inline]
 smp_apic_timer_interrupt+0x14a/0x700 arch/x86/kernel/apic/apic.c:1050
 apic_timer_interrupt+0xa9/0xb0 arch/x86/entry/entry_64.S:937
 </IRQ>
RIP: 0010:check_kcov_mode kernel/kcov.c:67 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x20/0x50 kernel/kcov.c:101
RSP: 0018:ffff8801ba6cf820 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff11
RAX: ffff8801bbcf4180 RBX: ffff8801c485cdc0 RCX: ffffffff84acc75d
RDX: 0000000000000000 RSI: ffffc90002913000 RDI: ffff8801d376cb50
RBP: ffff8801ba6cf820 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8801d376ca00
R13: dffffc0000000000 R14: ffffed003890b9d7 R15: ffff8801c485cebc
 xfrm_get_dst_nexthop net/xfrm/xfrm_policy.c:2732 [inline]
 xfrm_confirm_neigh+0xad/0x270 net/xfrm/xfrm_policy.c:2759
 dst_confirm_neigh include/net/dst.h:419 [inline]
 raw_sendmsg+0xece/0x23b0 net/ipv4/raw.c:689
 inet_sendmsg+0x11f/0x5e0 net/ipv4/af_inet.c:764
 sock_sendmsg_nosec net/socket.c:630 [inline]
 sock_sendmsg+0xca/0x110 net/socket.c:640
 SYSC_sendto+0x361/0x5c0 net/socket.c:1747
 SyS_sendto+0x40/0x50 net/socket.c:1715
 entry_SYSCALL_64_fastpath+0x29/0xa0
RIP: 0033:0x452f19
RSP: 002b:00007f9910011c58 EFLAGS: 00000212 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 000000000071bea0 RCX: 0000000000452f19
RDX: 0000000000000004 RSI: 00000000203fdffc RDI: 0000000000000013
RBP: 000000000000000e R08: 0000000020cf9000 R09: 0000000000000010
R10: fffffffffffffffe R11: 0000000000000212 R12: 00000000006ef1f0
R13: 00000000ffffffff R14: 00007f99100126d4 R15: 0000000000000000
INFO: rcu_sched detected expedited stalls on CPUs/tasks: { 0-... } 127669 jiffies s: 797 root: 0x1/.
blocking rcu_node structures:
Task dump for CPU 0:
syz-executor3   R  running task    25520 22801   3702 0x0000000c
Call Trace: