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BUG: KCSAN: data-race in io_sq_thread / io_uring_try_cancel_requests

write to 0xffff88811e92c278 of 8 bytes by task 28221 on cpu 0:
 io_sq_thread+0xcb5/0xd90 fs/io_uring.c:8162
 ret_from_fork+0x1f/0x30

read to 0xffff88811e92c278 of 8 bytes by task 8191 on cpu 1:
 io_uring_try_cancel_requests+0x1ab/0x302 fs/io_uring.c:10485
 io_ring_exit_work+0x7d/0x3cc fs/io_uring.c:10281
 process_one_work+0x3e3/0x970 kernel/workqueue.c:2289
 worker_thread+0x638/0xaa0 kernel/workqueue.c:2436
 kthread+0x1bf/0x1e0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30

value changed: 0xffff88811e996d00 -> 0x0000000000000000

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 8191 Comm: kworker/u4:85 Not tainted 5.18.0-rc1-syzkaller-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events_unbound io_ring_exit_work
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