================================================================== BUG: KCSAN: data-race in hrtimer_reprogram / print_cpu write to 0xffff888237d1ed60 of 8 bytes by task 3093 on cpu 1: __hrtimer_reprogram kernel/time/hrtimer.c:661 [inline] hrtimer_reprogram+0x1bd/0x230 kernel/time/hrtimer.c:868 hrtimer_start_range_ns+0x4e8/0x660 kernel/time/hrtimer.c:1302 hrtimer_start_expires include/linux/hrtimer.h:432 [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:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd read to 0xffff888237d1ed60 of 8 bytes by task 6288 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+0x612/0x8f0 fs/seq_file.c:272 proc_reg_read_iter+0x114/0x180 fs/proc/inode.c:305 call_read_iter include/linux/fs.h:1865 [inline] copy_splice_read+0x26b/0x4b0 fs/splice.c:367 vfs_splice_read fs/splice.c:994 [inline] splice_direct_to_actor+0x28c/0x690 fs/splice.c:1070 do_splice_direct+0x10d/0x190 fs/splice.c:1195 do_sendfile+0x3b6/0x9a0 fs/read_write.c:1254 __do_sys_sendfile64 fs/read_write.c:1322 [inline] __se_sys_sendfile64 fs/read_write.c:1308 [inline] __x64_sys_sendfile64+0x110/0x150 fs/read_write.c:1308 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd value changed: 0x00000021a14b7e00 -> 0x00000021a10c2430 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 6288 Comm: syz-executor.0 Not tainted 6.5.0-rc2-syzkaller-00307-gd192f5382581 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023 ==================================================================