================================================================== BUG: KCSAN: data-race in clockevents_program_event / print_tickdevice write to 0xffff888237c1c218 of 8 bytes by task 4276 on cpu 0: clockevents_program_event+0x36/0x1f0 kernel/time/clockevents.c:313 tick_program_event+0x7c/0xd0 kernel/time/tick-oneshot.c:44 __hrtimer_reprogram kernel/time/hrtimer.c:679 [inline] hrtimer_reprogram+0x1cf/0x220 kernel/time/hrtimer.c:864 hrtimer_start_range_ns+0x512/0x580 kernel/time/hrtimer.c:1303 hrtimer_start_expires include/linux/hrtimer.h:289 [inline] hrtimer_restart include/linux/hrtimer.h:297 [inline] common_hrtimer_rearm+0xa6/0xc0 kernel/time/posix-timers.c:249 posixtimer_rearm+0xc7/0x1a0 kernel/time/posix-timers.c:267 dequeue_signal+0x282/0x430 kernel/signal.c:696 get_signal+0x37d/0x1080 kernel/signal.c:2796 arch_do_signal_or_restart+0x95/0x4b0 arch/x86/kernel/signal.c:310 exit_to_user_mode_loop kernel/entry/common.c:111 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x59/0x130 kernel/entry/common.c:218 do_syscall_64+0xd6/0x1c0 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f read to 0xffff888237c1c218 of 8 bytes by task 4322 on cpu 1: print_tickdevice+0x144/0x340 kernel/time/timer_list.c:208 timer_list_show+0x79/0x180 kernel/time/timer_list.c:300 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/0x950 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+0xed5/0x2d60 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: 0x0000000bcaf9aa80 -> 0x0000000bcaeb4163 Reported by Kernel Concurrency Sanitizer on: CPU: 1 UID: 0 PID: 4322 Comm: syz.2.207 Not tainted 6.11.0-rc4-syzkaller-00236-g60f0560f53e3 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 ==================================================================