------------[ cut here ]------------
WARNING: CPU: 1 PID: 121 at lib/percpu-refcount.c:113 __percpu_ref_exit+0x30/0x54 lib/percpu-refcount.c:113
Modules linked in:
CPU: 1 PID: 121 Comm: kworker/u4:3 Not tainted 5.12.0-rc3-syzkaller-00036-gbf152b0b41dc #0
Hardware name: linux,dummy-virt (DT)
Workqueue: events_unbound io_ring_exit_work
pstate: 00400009 (nzcv daif +PAN -UAO -TCO BTYPE=--)
pc : __percpu_ref_exit+0x30/0x54 lib/percpu-refcount.c:113
lr : percpu_ref_exit+0x20/0x6c lib/percpu-refcount.c:134
sp : ffff800012d13cb0
x29: ffff800012d13cb0 x28: f5ff0000151425d0 
x27: ffff800011cf1858 x26: ffff800012974460 
x25: ffff8000126a7980 x24: 00000001000039c2 
x23: faff000016113000 x22: f5ff0000151420c0 
x21: f5ff0000160fc600 x20: f5ff0000151425b0 
x19: f5ff000015142000 x18: 000000000000000e 
x17: 0000000000000001 x16: 0000000000000019 
x15: 000043857f34c200 x14: ffff8000100b2488 
x13: ffff800010324bb8 x12: ffff8000112661a4 
x11: ffff8000114e5714 x10: f4ff0000152a4000 
x9 : 0000000000010272 x8 : 0000000080000000 
x7 : ffff00007fbf9628 x6 : ffff8000129223c0 
x5 : ffff8000129223c0 x4 : fffffc00005d8008 
x3 : 0000000000000001 x2 : ffff00007fbf96e8 
x1 : ffff80001054e690 x0 : 00007bff82a4e000 
Call trace:
 __percpu_ref_exit+0x30/0x54 lib/percpu-refcount.c:113
 percpu_ref_exit+0x20/0x6c lib/percpu-refcount.c:134
 io_ring_ctx_free fs/io_uring.c:8419 [inline]
 io_ring_exit_work+0x224/0x3f0 fs/io_uring.c:8565
 process_one_work+0x1d8/0x364 kernel/workqueue.c:2275
 worker_thread+0x70/0x434 kernel/workqueue.c:2421
 kthread+0x174/0x180 kernel/kthread.c:292
 ret_from_fork+0x10/0x34 arch/arm64/kernel/entry.S:958
---[ end trace 393d7df5ea692f6c ]---