================================================================== BUG: KCSAN: data-race in get_cpu_iowait_time_us / tick_nohz_idle_enter write to 0xffff888237c1e0b4 of 1 bytes by task 0 on cpu 0: tick_nohz_idle_enter+0x72/0xc0 kernel/time/tick-sched.c:1113 do_idle+0x3d/0x250 kernel/sched/idle.c:280 cpu_startup_entry+0x15/0x20 kernel/sched/idle.c:403 rest_init+0xfa/0x100 init/main.c:725 arch_call_rest_init+0xa/0xb init/main.c:881 start_kernel+0x5e4/0x669 init/main.c:1138 secondary_startup_64_no_verify+0xc4/0xcb read to 0xffff888237c1e0b4 of 1 bytes by task 9064 on cpu 1: get_cpu_iowait_time_us+0x6b/0x1f0 get_iowait_time fs/proc/stat.c:70 [inline] show_stat+0x374/0xdd0 fs/proc/stat.c:135 seq_read_iter+0x2e1/0x930 fs/seq_file.c:230 proc_reg_read_iter+0xd6/0x170 fs/proc/inode.c:296 call_read_iter include/linux/fs.h:2068 [inline] io_iter_do_read fs/io_uring.c:3611 [inline] io_read fs/io_uring.c:3668 [inline] io_issue_sqe+0xb2e/0x98d0 fs/io_uring.c:6751 __io_queue_sqe+0x20/0x6a0 fs/io_uring.c:7098 io_queue_sqe+0x46/0x550 fs/io_uring.c:7140 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:10149 [inline] __se_sys_io_uring_enter+0x212/0xb00 fs/io_uring.c:10091 __x64_sys_io_uring_enter+0x74/0x80 fs/io_uring.c:10091 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: 0x00 -> 0x05 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 9064 Comm: syz-executor.2 Not tainted 5.17.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================