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BUG: KCSAN: data-race in io_submit_sqes / io_uring_poll

read-write to 0xffff88813b8ae870 of 4 bytes by task 15879 on cpu 1:
 io_get_sqe io_uring/io_uring.c:2339 [inline]
 io_submit_sqes+0x25c/0x1030 io_uring/io_uring.c:2385
 __do_sys_io_uring_enter io_uring/io_uring.c:3343 [inline]
 __se_sys_io_uring_enter+0x1e7/0x1680 io_uring/io_uring.c:3275
 __x64_sys_io_uring_enter+0x78/0x90 io_uring/io_uring.c:3275
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

read to 0xffff88813b8ae870 of 4 bytes by task 15900 on cpu 0:
 io_sqring_full io_uring/io_uring.h:253 [inline]
 io_uring_poll+0x93/0x1a0 io_uring/io_uring.c:2776
 vfs_poll include/linux/poll.h:88 [inline]
 __io_arm_poll_handler+0x205/0xe30 io_uring/poll.c:598
 io_poll_add+0xb8/0x130 io_uring/poll.c:951
 io_issue_sqe+0x142/0x660 io_uring/io_uring.c:1851
 io_wq_submit_work+0x1ef/0x340 io_uring/io_uring.c:1927
 io_worker_handle_work+0x532/0xaf0 io_uring/io-wq.c:587
 io_wqe_worker+0x1e9/0x770 io_uring/io-wq.c:632
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308

value changed: 0x000001b6 -> 0x000001bc

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 15900 Comm: iou-wrk-15879 Not tainted 6.2.0-rc8-syzkaller-00021-ge1c04510f521-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
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