------------[ cut here ]------------
do not call blocking ops when !TASK_RUNNING; state=2 set at [<0000000082c0dae4>] prepare_to_wait_event+0x70/0x534 kernel/sched/wait.c:317
WARNING: kernel/sched/core.c:9120 at __might_sleep+0x108/0x160 kernel/sched/core.c:9120, CPU#0: syz.2.2035/7900
Modules linked in:
CPU: 0 UID: 0 PID: 7900 Comm: syz.2.2035 Not tainted syzkaller #0 PREEMPT 
Hardware name: linux,dummy-virt (DT)
pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : __might_sleep+0x108/0x160 kernel/sched/core.c:9120
lr : __might_sleep+0x108/0x160 kernel/sched/core.c:9120
sp : ffff8000a26179d0
x29: ffff8000a26179d0 x28: ffff000014e81d00 x27: ffff8000a2617aa0
x26: ffff8000a2617c08 x25: ffff80008d6ca000 x24: ffff8000a2617ac0
x23: 0000000000000002 x22: ffff000014e81d00 x21: ffff000014e81d00
x20: 000000000000026f x19: ffff8000859bf880 x18: 0000000000000000
x17: ffff7fffe4954000 x16: ffff80008da30000 x15: ffff8000876ab708
x14: 00000000000017c0 x13: 00000000000017c8 x12: ffff60000d7f78ea
x11: 1fffe0000d7f78e9 x10: ffff60000d7f78e9 x9 : dfff800000000000
x8 : ffff8000a2617500 x7 : ffff8000a2617680 x6 : ffff8000a2617620
x5 : ffff8000a2617560 x4 : 0000000000000000 x3 : 1fffe0000d7f6b3c
x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff000014e81d00
Call trace:
 __might_sleep+0x108/0x160 kernel/sched/core.c:9120 (P)
 __mutex_lock_common kernel/locking/mutex.c:623 [inline]
 __mutex_lock+0xd8/0x153c kernel/locking/mutex.c:821
 mutex_lock_nested+0x24/0x34 kernel/locking/mutex.c:874
 class_mutex_constructor include/linux/mutex.h:253 [inline]
 futex_pivot_pending kernel/futex/core.c:1789 [inline]
 futex_hash_allocate+0x9e8/0xc84 kernel/futex/core.c:1872
 futex_hash_prctl+0x128/0x280 kernel/futex/core.c:2027
 __do_sys_prctl kernel/sys.c:2885 [inline]
 __se_sys_prctl kernel/sys.c:2534 [inline]
 __arm64_sys_prctl+0x31c/0x1b5c kernel/sys.c:2534
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x74/0x240 arch/arm64/kernel/syscall.c:49
 el0_svc_common.constprop.0+0xac/0x230 arch/arm64/kernel/syscall.c:121
 do_el0_svc_compat+0x40/0x58 arch/arm64/kernel/syscall.c:146
 el0_svc_compat+0x54/0x264 arch/arm64/kernel/entry-common.c:887
 el0t_32_sync_handler+0x88/0xac arch/arm64/kernel/entry-common.c:905
 el0t_32_sync+0x19c/0x1a0 arch/arm64/kernel/entry.S:599
irq event stamp: 1396
hardirqs last  enabled at (1395): [<ffff8000802d2e54>] raw_spin_rq_unlock_irq kernel/sched/sched.h:1673 [inline]
hardirqs last  enabled at (1395): [<ffff8000802d2e54>] finish_lock_switch kernel/sched/core.c:5241 [inline]
hardirqs last  enabled at (1395): [<ffff8000802d2e54>] finish_task_switch.isra.0+0x1e4/0x9f0 kernel/sched/core.c:5359
hardirqs last disabled at (1396): [<ffff8000858f0190>] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:425
softirqs last  enabled at (1366): [<ffff800080238a78>] softirq_handle_end kernel/softirq.c:468 [inline]
softirqs last  enabled at (1366): [<ffff800080238a78>] handle_softirqs+0xa98/0x1044 kernel/softirq.c:650
softirqs last disabled at (1361): [<ffff8000800103d4>] __do_softirq+0x14/0x20 kernel/softirq.c:656
---[ end trace 0000000000000000 ]---