================================================================== BUG: KCSAN: data-race in io_wqe_enqueue / io_wqe_worker write to 0xffff88815ad786c4 of 4 bytes by task 18274 on cpu 1: io_wqe_worker+0x79/0x4f0 fs/io-wq.c:625 ret_from_fork+0x1f/0x30 read to 0xffff88815ad786c4 of 4 bytes by task 18272 on cpu 0: io_wqe_get_acct fs/io-wq.c:172 [inline] io_wqe_activate_free_worker fs/io-wq.c:266 [inline] io_wqe_enqueue+0x381/0x740 fs/io-wq.c:935 io_wq_enqueue+0x31/0x40 fs/io-wq.c:968 io_queue_async_work+0x202/0x430 fs/io_uring.c:1615 io_queue_sqe_fallback fs/io_uring.c:7132 [inline] io_queue_sqe+0xc5/0x550 fs/io_uring.c:7142 io_submit_sqe+0x796/0x4b34 fs/io_uring.c:7348 io_submit_sqes+0x25f/0x560 fs/io_uring.c:7454 __do_sys_io_uring_enter fs/io_uring.c:10162 [inline] __se_sys_io_uring_enter+0x212/0xb00 fs/io_uring.c:10104 __x64_sys_io_uring_enter+0x74/0x80 fs/io_uring.c:10104 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae value changed: 0x00000004 -> 0x00000007 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 18272 Comm: syz-executor.4 Not tainted 5.17.0-rc5-syzkaller-00306-g2293be58d6a1-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================