================================================================== BUG: KCSAN: data-race in io_wq_worker_running / io_wqe_enqueue write to 0xffff8881560ec9c4 of 4 bytes by task 16747 on cpu 0: io_wq_worker_running+0x60/0xa0 fs/io-wq.c:691 schedule_timeout+0xc1/0x290 kernel/time/timer.c:1881 io_wqe_worker+0x37d/0x540 fs/io-wq.c:659 ret_from_fork+0x1f/0x30 read to 0xffff8881560ec9c4 of 4 bytes by task 16740 on cpu 1: 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:940 io_wq_enqueue+0x31/0x40 fs/io-wq.c:973 io_queue_async_work+0x228/0x470 fs/io_uring.c:1751 io_queue_sqe_fallback fs/io_uring.c:7639 [inline] io_queue_sqe fs/io_uring.c:7649 [inline] io_submit_sqe+0x36e3/0x4a63 fs/io_uring.c:7855 io_submit_sqes+0x278/0x6c0 fs/io_uring.c:7961 __do_sys_io_uring_enter fs/io_uring.c:11011 [inline] __se_sys_io_uring_enter+0x2a2/0xbe0 fs/io_uring.c:10937 __x64_sys_io_uring_enter+0x74/0x80 fs/io_uring.c:10937 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: 0x0000000d -> 0x0000000b Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 16740 Comm: syz-executor.4 Tainted: G W 5.17.0-syzkaller-14114-g09bb8856d4a7-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================