KCSAN: data-race in create_io_worker / io_wqe_wake

Kernel	Title	Count	Last	Reported	Patched	Status
upstream	KCSAN: data-race in create_io_worker / io_wqe_wake_worker (4) fs	1	1176d	1176d	0/26	auto-closed as invalid on 2021/03/19 11:24
upstream	KCSAN: data-race in create_io_worker / io_wqe_wake_worker fs	2	1301d	1311d	0/26	auto-closed as invalid on 2020/11/14 12:51
upstream	KCSAN: data-race in create_io_worker / io_wqe_wake_worker (3) fs	2	1213d	1219d	0/26	auto-closed as invalid on 2021/02/09 23:53

================================================================== BUG: KCSAN: data-race in create_io_worker / io_wqe_wake_worker write to 0xffff888046dc4044 of 4 bytes by task 12794 on cpu 1: create_io_worker+0x2cb/0x3a0 fs/io-wq.c:713 io_wq_manager+0x350/0x790 fs/io-wq.c:812 kthread+0x1fd/0x220 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296 read to 0xffff888046dc4044 of 4 bytes by task 12805 on cpu 0: io_wqe_wake_worker+0x163/0x220 fs/io-wq.c:308 io_wqe_enqueue+0x2a5/0x320 fs/io-wq.c:919 io_wq_enqueue+0x3a/0x40 fs/io-wq.c:926 __io_queue_async_work fs/io_uring.c:1433 [inline] __io_queue_deferred+0x206/0x570 fs/io_uring.c:1507 io_commit_cqring+0x457/0x460 fs/io_uring.c:1540 io_cqring_add_event fs/io_uring.c:1739 [inline] __io_req_complete+0xe5/0x450 fs/io_uring.c:1782 io_issue_sqe+0x2f94/0x45e0 fs/io_uring.c:4260 io_wq_submit_work+0x27c/0x760 fs/io_uring.c:6064 io_worker_handle_work+0xd2a/0x1000 fs/io-wq.c:572 io_wqe_worker+0x202/0x810 fs/io-wq.c:614 kthread+0x1fd/0x220 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 12805 Comm: io_wqe_worker-0 Not tainted 5.10.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================