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BUG: KCSAN: data-race in __io_req_complete_post / io_uring_poll

read-write to 0xffff88813bf6ba10 of 4 bytes by task 26751 on cpu 1:
 io_get_cqe io_uring/io_uring.h:99 [inline]
 __io_fill_cqe_req io_uring/io_uring.h:119 [inline]
 __io_req_complete_post+0x9e/0xb50 io_uring/io_uring.c:806
 io_req_complete_post io_uring/io_uring.c:815 [inline]
 io_req_complete_failed+0xc5/0x180 io_uring/io_uring.c:828
 io_req_task_cancel+0x6a/0x70 io_uring/io_uring.c:1096
 handle_tw_list+0x12a/0x180 io_uring/io_uring.c:984
 tctx_task_work+0x72/0x360 io_uring/io_uring.c:1031
 task_work_run+0x8e/0x110 kernel/task_work.c:177
 get_signal+0xeca/0x1020 kernel/signal.c:2634
 arch_do_signal_or_restart+0x87/0x2d0 arch/x86/kernel/signal.c:869
 exit_to_user_mode_loop+0x78/0x130 kernel/entry/common.c:166
 exit_to_user_mode_prepare kernel/entry/common.c:201 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline]
 syscall_exit_to_user_mode+0x6a/0x90 kernel/entry/common.c:294
 do_syscall_64+0x37/0x70 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

read to 0xffff88813bf6ba10 of 4 bytes by task 26711 on cpu 0:
 __io_cqring_events io_uring/io_uring.c:171 [inline]
 io_cqring_events io_uring/io_uring.c:1220 [inline]
 io_uring_poll+0xc5/0x150 io_uring/io_uring.c:2512
 vfs_poll include/linux/poll.h:88 [inline]
 do_pollfd fs/select.c:873 [inline]
 do_poll fs/select.c:921 [inline]
 do_sys_poll+0x6d5/0xca0 fs/select.c:1015
 __do_sys_ppoll fs/select.c:1121 [inline]
 __se_sys_ppoll+0x195/0x1d0 fs/select.c:1101
 __x64_sys_ppoll+0x63/0x70 fs/select.c:1101
 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+0x63/0xcd

value changed: 0x0000011b -> 0x0000012f

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 26711 Comm: syz-executor.4 Not tainted 6.0.0-rc5-syzkaller-00025-g3245cb65fd91-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022
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