================================================================== BUG: KCSAN: data-race in hrtimer_reprogram / print_cpu write to 0xffff888237c1db60 of 8 bytes by task 1795 on cpu 0: __hrtimer_reprogram kernel/time/hrtimer.c:659 [inline] hrtimer_reprogram+0x1de/0x250 kernel/time/hrtimer.c:866 hrtimer_start_range_ns+0x410/0x6f0 kernel/time/hrtimer.c:1299 hrtimer_start_expires include/linux/hrtimer.h:432 [inline] hrtimer_sleeper_start_expires kernel/time/hrtimer.c:1965 [inline] do_nanosleep+0x97/0x390 kernel/time/hrtimer.c:2041 hrtimer_nanosleep kernel/time/hrtimer.c:2097 [inline] __do_sys_nanosleep kernel/time/hrtimer.c:2131 [inline] __se_sys_nanosleep+0x229/0x2f0 kernel/time/hrtimer.c:2118 __x64_sys_nanosleep+0x2d/0x40 kernel/time/hrtimer.c:2118 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd read to 0xffff888237c1db60 of 8 bytes by task 27164 on cpu 1: print_cpu+0x31e/0x680 kernel/time/timer_list.c:133 timer_list_show+0x114/0x180 kernel/time/timer_list.c:291 seq_read_iter+0x676/0x8e0 fs/seq_file.c:272 proc_reg_read_iter+0xfa/0x170 fs/proc/inode.c:305 call_read_iter include/linux/fs.h:2186 [inline] generic_file_splice_read+0xde/0x2b0 fs/splice.c:309 do_splice_to fs/splice.c:793 [inline] splice_direct_to_actor+0x26c/0x620 fs/splice.c:865 do_splice_direct+0xfb/0x180 fs/splice.c:974 do_sendfile+0x3bf/0x910 fs/read_write.c:1249 __do_sys_sendfile64 fs/read_write.c:1317 [inline] __se_sys_sendfile64 fs/read_write.c:1303 [inline] __x64_sys_sendfile64+0x10c/0x150 fs/read_write.c:1303 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd value changed: 0x00000071005584e2 -> 0x000000710055666f Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 27164 Comm: syz-executor.1 Tainted: G W 5.19.0-syzkaller-13930-g7ebfc85e2cd7-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 ==================================================================