syzbot

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BUG: KCSAN: data-race in io_sq_thread / io_uring_try_cancel_requests

write to 0xffff888110de4278 of 8 bytes by task 31731 on cpu 1:
 io_sq_thread+0xdab/0xff0 io_uring/sqpoll.c:383
 ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244

read to 0xffff888110de4278 of 8 bytes by task 28 on cpu 0:
 io_uring_try_cancel_requests+0x1c3/0x370 io_uring/io_uring.c:3016
 io_ring_exit_work+0x148/0x500 io_uring/io_uring.c:2817
 process_one_work kernel/workqueue.c:3248 [inline]
 process_scheduled_works+0x483/0x9a0 kernel/workqueue.c:3329
 worker_thread+0x526/0x720 kernel/workqueue.c:3409
 kthread+0x1d1/0x210 kernel/kthread.c:389
 ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244

value changed: 0xffff888108cd0000 -> 0x0000000000000000

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 28 Comm: kworker/u8:1 Not tainted 6.10.0-rc5-syzkaller-00253-gde0a9f448633 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Workqueue: iou_exit io_ring_exit_work
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