syzbot

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BUG: KCSAN: data-race in aio_read_events / iocb_put

write to 0xffff8881de6c7008 of 4 bytes by task 3045 on cpu 0:
 aio_read_events_ring fs/aio.c:1269 [inline]
 aio_read_events+0x359/0x4d0 fs/aio.c:1283
 read_events fs/aio.c:1320 [inline]
 do_io_getevents+0x12f/0x3c0 fs/aio.c:2201
 __do_sys_io_getevents fs/aio.c:2234 [inline]
 __se_sys_io_getevents fs/aio.c:2222 [inline]
 __x64_sys_io_getevents+0xca/0x190 fs/aio.c:2222
 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 0xffff8881de6c7008 of 4 bytes by task 3046 on cpu 1:
 aio_complete fs/aio.c:1156 [inline]
 iocb_put+0x1e8/0x620 fs/aio.c:1191
 io_submit_one+0xbc1/0x12c0 fs/aio.c:2026
 __do_sys_io_submit fs/aio.c:2082 [inline]
 __se_sys_io_submit+0xf5/0x280 fs/aio.c:2052
 __x64_sys_io_submit+0x43/0x50 fs/aio.c:2052
 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

value changed: 0x00000027 -> 0x0000002d

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 3046 Comm: syz-executor.2 Not tainted 6.4.0-rc6-syzkaller-00195-g40f71e7cd3c6 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
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