================================================================== BUG: KCSAN: data-race in get_cpu_idle_time_us / tick_nohz_idle_enter write to 0xffff888237d1e0b4 of 1 bytes by task 0 on cpu 1: tick_nohz_idle_enter+0x74/0xd0 kernel/time/tick-sched.c:1158 do_idle+0x3d/0x250 kernel/sched/idle.c:277 cpu_startup_entry+0x15/0x20 kernel/sched/idle.c:400 secondary_startup_64_no_verify+0xc4/0xcb read to 0xffff888237d1e0b4 of 1 bytes by task 6946 on cpu 0: get_cpu_idle_time_us+0x6b/0x1f0 get_idle_time fs/proc/stat.c:54 [inline] show_stat+0x8bf/0xdd0 fs/proc/stat.c:175 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:2044 [inline] io_iter_do_read fs/io_uring.c:3824 [inline] io_read fs/io_uring.c:3894 [inline] io_issue_sqe+0x19a9/0x8790 fs/io_uring.c:7253 __io_queue_sqe+0x20/0x460 fs/io_uring.c:7605 io_queue_sqe fs/io_uring.c:7647 [inline] io_submit_sqe+0x7d2/0x4a63 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: 0x00 -> 0x05 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 6946 Comm: syz-executor.5 Not tainted 5.17.0-syzkaller-14079-gbe2d3ecedd99-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================