================================================
WARNING: lock held when returning to user space!
4.16.0+ #10 Not tainted
------------------------------------------------
syz-executor0/9735 is leaving the kernel with locks still held!
1 lock held by syz-executor0/9735:
 #0: 00000000a8b08e39 (rcu_read_lock){....}, at: ip6_route_del+0xea/0x13f0 net/ipv6/route.c:3153
BUG: scheduling while atomic: syz-executor0/9735/0x00000002
INFO: lockdep is turned off.
Modules linked in:
Kernel panic - not syncing: scheduling while atomic

CPU: 0 PID: 9735 Comm: syz-executor0 Not tainted 4.16.0+ #10
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1b9/0x294 lib/dump_stack.c:113
 panic+0x22f/0x4de kernel/panic.c:184
 __schedule_bug.cold.86+0xdf/0xdf kernel/sched/core.c:3290
 schedule_debug kernel/sched/core.c:3307 [inline]
 __schedule+0x139e/0x1e30 kernel/sched/core.c:3412
 schedule+0xef/0x430 kernel/sched/core.c:3549
 exit_to_usermode_loop+0x220/0x310 arch/x86/entry/common.c:152
 prepare_exit_to_usermode arch/x86/entry/common.c:196 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:265 [inline]
 do_syscall_64+0x792/0x9d0 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x455389
RSP: 002b:00007f9bdc805c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: 0000000000000000 RBX: 00007f9bdc8066d4 RCX: 0000000000455389
RDX: 0000000020000440 RSI: 000000000000890c RDI: 0000000000000013
RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 000000000000038c R14: 00000000006f85c0 R15: 0000000000000000
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..