================================================================== BUG: KCSAN: data-race in io_wqe_enqueue / io_wqe_worker write to 0xffff888123c33844 of 4 bytes by task 3918 on cpu 1: io_wqe_worker+0x7c/0x540 fs/io-wq.c:630 ret_from_fork+0x1f/0x30 read to 0xffff888123c33844 of 4 bytes by task 3913 on cpu 0: io_wqe_get_acct fs/io-wq.c:173 [inline] io_wqe_activate_free_worker fs/io-wq.c:272 [inline] io_wqe_enqueue+0x3f1/0x790 fs/io-wq.c:938 io_wq_enqueue+0x31/0x40 fs/io-wq.c:971 io_queue_async_work+0x228/0x470 fs/io_uring.c:1732 io_queue_sqe_arm_apoll fs/io_uring.c:7509 [inline] __io_queue_sqe+0x390/0x7a0 fs/io_uring.c:7541 io_req_task_submit+0x8b/0xb0 fs/io_uring.c:2593 handle_tw_list fs/io_uring.c:2480 [inline] tctx_task_work+0x7d3/0xab0 fs/io_uring.c:2514 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:147 [inline] exit_to_user_mode_loop kernel/entry/common.c:187 [inline] exit_to_user_mode_prepare+0xfd/0x180 kernel/entry/common.c:222 __syscall_exit_to_user_mode_work kernel/entry/common.c:304 [inline] syscall_exit_to_user_mode+0x20/0x40 kernel/entry/common.c:315 do_syscall_64+0x37/0x70 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x44/0xae value changed: 0x00000004 -> 0x00000003 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 3913 Comm: syz-executor.2 Not tainted 5.17.0-syzkaller-02003-g3bf03b9a0839-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================