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WARNING: CPU: 0 PID: 10728 at io_uring/io_uring.c:2982 io_ring_exit_work+0x2b0/0xc28 io_uring/io_uring.c:2982
Modules linked in:
CPU: 0 UID: 0 PID: 10728 Comm: kworker/u8:0 Not tainted syzkaller #0 PREEMPT 
Hardware name: linux,dummy-virt (DT)
Workqueue: iou_exit io_ring_exit_work
pstate: 80000005 (Nzcv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : io_ring_exit_work+0x2b0/0xc28 io_uring/io_uring.c:2982
lr : class_mutex_destructor include/linux/mutex.h:228 [inline]
lr : io_req_caches_free io_uring/io_uring.c:2781 [inline]
lr : io_ring_exit_work+0x294/0xc28 io_uring/io_uring.c:2980
sp : ffff80008fa77920
x29: ffff80008fa77920 x28: ffff0000212b2558 x27: 0000000000000005
x26: 000000010006a4ff x25: 1fffe00004256400 x24: ffff8000870f0200
x23: dfff800000000000 x22: ffff0000212b2040 x21: ffff0000212b26c8
x20: 0000000000000000 x19: ffff0000212b2000 x18: 0000000000000000
x17: ffff7fffe2fce000 x16: ffff800080000000 x15: 0000000000000000
x14: 00004c4b40000000 x13: 0000000000000000 x12: ffff700011f4ef13
x11: 1ffff00011f4ef12 x10: ffff700011f4ef12 x9 : dfff800000000000
x8 : ffff80008fa77897 x7 : 0000000000000001 x6 : ffff700011f4ef12
x5 : ffff80008fa77890 x4 : ffff700011f4ef13 x3 : ffff800085455d10
x2 : 0000000000000000 x1 : 0000000000000000 x0 : 000000010006a504
Call trace:
 io_ring_exit_work+0x2b0/0xc28 io_uring/io_uring.c:2982 (P)
 process_one_work+0x7cc/0x18d4 kernel/workqueue.c:3236
 process_scheduled_works kernel/workqueue.c:3319 [inline]
 worker_thread+0x734/0xb84 kernel/workqueue.c:3400
 kthread+0x348/0x5fc kernel/kthread.c:463
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860
irq event stamp: 3102102
hardirqs last  enabled at (3102101): [<ffff800085468ed0>] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:159 [inline]
hardirqs last  enabled at (3102101): [<ffff800085468ed0>] _raw_spin_unlock_irq+0x30/0x8c kernel/locking/spinlock.c:202
hardirqs last disabled at (3102102): [<ffff8000854429a8>] el1_brk64+0x1c/0x48 arch/arm64/kernel/entry-common.c:574
softirqs last  enabled at (3100454): [<ffff8000801bc538>] softirq_handle_end kernel/softirq.c:425 [inline]
softirqs last  enabled at (3100454): [<ffff8000801bc538>] handle_softirqs+0x88c/0xdb4 kernel/softirq.c:607
softirqs last disabled at (3100431): [<ffff800080010850>] __do_softirq+0x14/0x20 kernel/softirq.c:613
---[ end trace 0000000000000000 ]---