================================================================== BUG: KCSAN: data-race in io_wqe_enqueue / io_wqe_worker write to 0xffff8881264b5604 of 4 bytes by task 3320 on cpu 0: io_wqe_worker+0x79/0x4f0 fs/io-wq.c:625 ret_from_fork+0x1f/0x30 read to 0xffff8881264b5604 of 4 bytes by task 3300 on cpu 1: io_wqe_get_acct fs/io-wq.c:172 [inline] io_wqe_activate_free_worker fs/io-wq.c:266 [inline] io_wqe_enqueue+0x381/0x740 fs/io-wq.c:935 io_wq_enqueue+0x31/0x40 fs/io-wq.c:968 io_queue_async_work+0x202/0x430 fs/io_uring.c:1615 io_queue_sqe_arm_apoll fs/io_uring.c:7083 [inline] __io_queue_sqe+0x44c/0x6a0 fs/io_uring.c:7112 io_req_task_submit fs/io_uring.c:2441 [inline] io_apoll_task_func+0x4b7/0x800 fs/io_uring.c:5600 handle_tw_list fs/io_uring.c:2328 [inline] tctx_task_work+0x8b2/0xc90 fs/io_uring.c:2362 task_work_run+0x8e/0x110 kernel/task_work.c:164 tracehook_notify_signal include/linux/tracehook.h:213 [inline] handle_signal_work kernel/entry/common.c:146 [inline] exit_to_user_mode_loop kernel/entry/common.c:172 [inline] exit_to_user_mode_prepare+0x102/0x190 kernel/entry/common.c:207 __syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline] syscall_exit_to_user_mode+0x20/0x40 kernel/entry/common.c:300 do_syscall_64+0x50/0xd0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x44/0xae value changed: 0x00000004 -> 0x00000007 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 3300 Comm: syz-executor.3 Not tainted 5.17.0-rc5-syzkaller-00021-g23d04328444a-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================