================================================================== BUG: KCSAN: data-race in io_wqe_enqueue / io_wqe_worker write to 0xffff888136d5c844 of 4 bytes by task 12948 on cpu 1: io_wqe_worker+0x7c/0x540 fs/io-wq.c:630 ret_from_fork+0x1f/0x30 read to 0xffff888136d5c844 of 4 bytes by task 12914 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:7508 [inline] __io_queue_sqe+0x390/0x7a0 fs/io_uring.c:7540 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] io_run_task_work fs/io_uring.c:2755 [inline] io_run_task_work_sig fs/io_uring.c:8127 [inline] io_cqring_wait_schedule fs/io_uring.c:8144 [inline] io_cqring_wait+0xe6e/0x11e0 fs/io_uring.c:8320 __do_sys_io_uring_enter fs/io_uring.c:10949 [inline] __se_sys_io_uring_enter+0x70c/0xbe0 fs/io_uring.c:10849 __x64_sys_io_uring_enter+0x74/0x80 fs/io_uring.c:10849 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x50 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae value changed: 0x00000004 -> 0x00000003 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 12914 Comm: syz-executor.2 Not tainted 5.17.0-syzkaller-11407-gae085d7f9365-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================