syzbot

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BUG: KCSAN: data-race in aio_read_events / iocb_put

write to 0xffff8881056e6008 of 4 bytes by task 12674 on cpu 0:
 aio_read_events_ring fs/aio.c:1285 [inline]
 aio_read_events+0x2f7/0x400 fs/aio.c:1298
 read_events fs/aio.c:1334 [inline]
 do_io_getevents+0x11b/0x450 fs/aio.c:2230
 __do_sys_io_getevents fs/aio.c:2263 [inline]
 __se_sys_io_getevents fs/aio.c:2251 [inline]
 __x64_sys_io_getevents+0xca/0x190 fs/aio.c:2251
 x64_sys_call+0x1893/0x3000 arch/x86/include/generated/asm/syscalls_64.h:209
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xc0/0x2a0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

read to 0xffff8881056e6008 of 4 bytes by task 12671 on cpu 1:
 aio_complete fs/aio.c:1161 [inline]
 iocb_put+0x17a/0x680 fs/aio.c:1209
 io_submit_one+0xbcb/0x1350 fs/aio.c:2056
 __do_sys_io_submit fs/aio.c:2112 [inline]
 __se_sys_io_submit+0xfb/0x280 fs/aio.c:2082
 __x64_sys_io_submit+0x43/0x50 fs/aio.c:2082
 x64_sys_call+0x2e40/0x3000 arch/x86/include/generated/asm/syscalls_64.h:210
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xc0/0x2a0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

value changed: 0x00000014 -> 0x0000001b

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 UID: 0 PID: 12671 Comm: syz.7.7949 Tainted: G        W           syzkaller #0 PREEMPT(voluntary) 
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
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