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BUG: KCSAN: data-race in io_submit_sqes / io_uring_poll

read-write to 0xffff888108681070 of 4 bytes by task 2469 on cpu 0:
 io_get_sqe fs/io_uring.c:9037 [inline]
 io_submit_sqes+0x1f2/0x500 fs/io_uring.c:9083
 __do_sys_io_uring_enter fs/io_uring.c:12040 [inline]
 __se_sys_io_uring_enter+0x24b/0xd60 fs/io_uring.c:11966
 __x64_sys_io_uring_enter+0x74/0x80 fs/io_uring.c:11966
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x46/0xb0

read to 0xffff888108681070 of 4 bytes by task 2474 on cpu 1:
 io_sqring_full fs/io_uring.c:2184 [inline]
 io_uring_poll+0x8d/0x150 fs/io_uring.c:11205
 vfs_poll include/linux/poll.h:88 [inline]
 __io_arm_poll_handler+0x1b9/0x570 fs/io_uring.c:7130
 io_poll_add fs/io_uring.c:7414 [inline]
 io_issue_sqe+0x165a/0xaab0 fs/io_uring.c:8345
 io_wq_submit_work+0x41b/0x590 fs/io_uring.c:8523
 io_worker_handle_work+0x517/0xc50 fs/io-wq.c:597
 io_wqe_worker+0x1d1/0x940 fs/io-wq.c:644
 ret_from_fork+0x1f/0x30

value changed: 0x00001f57 -> 0x00001f5b

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 2474 Comm: iou-wrk-2469 Not tainted 5.19.0-rc5-syzkaller-00049-gc1084b6c5620-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022
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