BUG: spinlock recursion on CPU#1, syz-executor0/1518
 lock: 0xffff80003af9a080, .magic: dead4ead, .owner: syz-executor0/1518, .owner_cpu: -1
CPU: 1 PID: 1518 Comm: syz-executor0 Not tainted 4.15.0 #3
Hardware name: linux,dummy-virt (DT)
Call trace:
 dump_backtrace+0x0/0x330 arch/arm64/kernel/time.c:52
 show_stack+0x20/0x30 arch/arm64/kernel/traps.c:151
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0xd0/0x120 lib/dump_stack.c:53
 spin_dump+0x150/0x1f0 kernel/locking/spinlock_debug.c:67
 spin_bug kernel/locking/spinlock_debug.c:75 [inline]
 debug_spin_lock_before kernel/locking/spinlock_debug.c:84 [inline]
 do_raw_spin_lock+0x1e4/0x250 kernel/locking/spinlock_debug.c:112
 __raw_spin_lock include/linux/spinlock_api_smp.h:143 [inline]
 _raw_spin_lock+0x44/0x50 kernel/locking/spinlock.c:144
 __task_rq_lock+0xc0/0x288 kernel/sched/core.c:103
 wake_up_new_task+0x384/0x798 kernel/sched/core.c:2465
 _do_fork+0x1b4/0xa78 kernel/fork.c:2069
 SYSC_clone kernel/fork.c:2154 [inline]
 SyS_clone+0x48/0x60 kernel/fork.c:2132
 el0_svc_naked+0x20/0x24