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BUG: KCSAN: data-race in __se_sys_io_uring_register / io_sqe_files_register

read-write to 0xffff8881085870a0 of 4 bytes by task 6449 on cpu 1:
 io_sqe_files_register+0x2bf/0x3b0 io_uring/rsrc.c:727
 __io_uring_register io_uring/register.c:429 [inline]
 __do_sys_io_uring_register io_uring/register.c:600 [inline]
 __se_sys_io_uring_register+0x471/0x10e0 io_uring/register.c:561
 __x64_sys_io_uring_register+0x55/0x60 io_uring/register.c:561
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x1d0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x63/0x6b

read to 0xffff8881085870a0 of 4 bytes by task 6450 on cpu 0:
 __do_sys_io_uring_register io_uring/register.c:602 [inline]
 __se_sys_io_uring_register+0x9f0/0x10e0 io_uring/register.c:561
 __x64_sys_io_uring_register+0x55/0x60 io_uring/register.c:561
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x1d0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x63/0x6b

value changed: 0x00000000 -> 0x00000001

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 6450 Comm: syz-executor.3 Not tainted 6.8.0-rc4-syzkaller-00267-g0f1dd5e91e2b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
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