================================================================== BUG: KCSAN: data-race in hrtimer_reprogram / print_cpu write to 0xffff888237d1f0e0 of 8 bytes by task 3082 on cpu 1: __hrtimer_reprogram kernel/time/hrtimer.c:661 [inline] hrtimer_reprogram+0x1a8/0x220 kernel/time/hrtimer.c:868 hrtimer_start_range_ns+0x4e3/0x660 kernel/time/hrtimer.c:1302 hrtimer_start_expires include/linux/hrtimer.h:392 [inline] hrtimer_sleeper_start_expires kernel/time/hrtimer.c:1968 [inline] do_nanosleep+0x85/0x2f0 kernel/time/hrtimer.c:2044 hrtimer_nanosleep+0xe7/0x1e0 kernel/time/hrtimer.c:2100 common_nsleep+0x68/0x80 kernel/time/posix-timers.c:1350 __do_sys_clock_nanosleep kernel/time/posix-timers.c:1396 [inline] __se_sys_clock_nanosleep+0x202/0x230 kernel/time/posix-timers.c:1373 __x64_sys_clock_nanosleep+0x55/0x60 kernel/time/posix-timers.c:1373 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x59/0x120 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b read to 0xffff888237d1f0e0 of 8 bytes by task 32124 on cpu 0: print_cpu+0x2fb/0x640 kernel/time/timer_list.c:133 timer_list_show+0x115/0x180 kernel/time/timer_list.c:291 seq_read_iter+0x2bc/0x8f0 fs/seq_file.c:230 proc_reg_read_iter+0x114/0x180 fs/proc/inode.c:302 call_read_iter include/linux/fs.h:2079 [inline] new_sync_read fs/read_write.c:395 [inline] vfs_read+0x5ab/0x6a0 fs/read_write.c:476 ksys_read+0xeb/0x1a0 fs/read_write.c:619 __do_sys_read fs/read_write.c:629 [inline] __se_sys_read fs/read_write.c:627 [inline] __x64_sys_read+0x42/0x50 fs/read_write.c:627 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x59/0x120 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b value changed: 0x00000048424d2f80 -> 0x00000048424aa2f3 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 32124 Comm: syz-executor.5 Not tainted 6.7.0-syzkaller-13004-g4fbbed787267 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 ==================================================================