================================================================== BUG: KCSAN: data-race in io_wq_worker_running / io_wqe_activate_free_worker write to 0xffff88812b689f04 of 4 bytes by task 4250 on cpu 0: io_wq_worker_running+0x60/0xa0 fs/io-wq.c:691 schedule_timeout+0xc1/0x290 kernel/time/timer.c:1884 io_wqe_worker+0x396/0x940 fs/io-wq.c:659 ret_from_fork+0x1f/0x30 read to 0xffff88812b689f04 of 4 bytes by task 4248 on cpu 1: io_wqe_get_acct fs/io-wq.c:173 [inline] io_wqe_activate_free_worker+0xf8/0x2b0 fs/io-wq.c:272 io_wqe_enqueue+0x2f0/0x500 fs/io-wq.c:940 io_wq_enqueue+0x31/0x40 fs/io-wq.c:973 io_queue_async_work+0x229/0x370 fs/io_uring.c:1707 io_queue_sqe_fallback+0x84/0xd0 fs/io_uring.c:7541 io_queue_sqe fs/io_uring.c:7551 [inline] io_submit_sqe+0x3394/0x4300 fs/io_uring.c:7754 io_submit_sqes+0x25e/0x7e0 fs/io_uring.c:7860 __do_sys_io_uring_enter fs/io_uring.c:10805 [inline] __se_sys_io_uring_enter+0x2cb/0xc70 fs/io_uring.c:10731 __x64_sys_io_uring_enter+0x74/0x80 fs/io_uring.c:10731 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 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: 4248 Comm: syz-executor.2 Not tainted 5.18.0-rc5-syzkaller-00014-gef8e4d3c2ab1-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================