================================================================== BUG: KCSAN: data-race in hrtimer_reprogram / print_cpu write to 0xffff888237d1ffa0 of 8 bytes by task 15484 on cpu 1: __hrtimer_reprogram kernel/time/hrtimer.c:657 [inline] hrtimer_reprogram+0x1a2/0x220 kernel/time/hrtimer.c:864 hrtimer_start_range_ns+0x4ee/0x560 kernel/time/hrtimer.c:1301 hrtimer_start_expires include/linux/hrtimer.h:289 [inline] hrtimer_sleeper_start_expires kernel/time/hrtimer.c:1949 [inline] do_nanosleep+0x86/0x300 kernel/time/hrtimer.c:2025 hrtimer_nanosleep+0xe8/0x1e0 kernel/time/hrtimer.c:2081 common_nsleep+0x68/0x90 kernel/time/posix-timers.c:1350 __do_sys_clock_nanosleep kernel/time/posix-timers.c:1396 [inline] __se_sys_clock_nanosleep+0x20a/0x240 kernel/time/posix-timers.c:1373 __x64_sys_clock_nanosleep+0x55/0x70 kernel/time/posix-timers.c:1373 x64_sys_call+0x24ad/0x2d70 arch/x86/include/generated/asm/syscalls_64.h:231 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xc9/0x1c0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f read to 0xffff888237d1ffa0 of 8 bytes by task 15485 on cpu 0: print_cpu+0x2fb/0x670 kernel/time/timer_list.c:133 timer_list_show+0x115/0x180 kernel/time/timer_list.c:295 seq_read_iter+0x65b/0x940 fs/seq_file.c:272 proc_reg_read_iter+0x11e/0x190 fs/proc/inode.c:299 copy_splice_read+0x3a4/0x5d0 fs/splice.c:365 do_splice_read fs/splice.c:985 [inline] splice_direct_to_actor+0x26c/0x670 fs/splice.c:1089 do_splice_direct_actor fs/splice.c:1207 [inline] do_splice_direct+0xd7/0x150 fs/splice.c:1233 do_sendfile+0x3ab/0x960 fs/read_write.c:1295 __do_sys_sendfile64 fs/read_write.c:1362 [inline] __se_sys_sendfile64 fs/read_write.c:1348 [inline] __x64_sys_sendfile64+0x110/0x150 fs/read_write.c:1348 x64_sys_call+0x2c9f/0x2d70 arch/x86/include/generated/asm/syscalls_64.h:41 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xc9/0x1c0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f value changed: 0x000000453875fd00 -> 0x000000453871d96a Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 15485 Comm: syz-executor.4 Tainted: G W 6.10.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 ==================================================================