================================================================== BUG: KCSAN: data-race in clockevents_program_event / print_tickdevice write to 0xffff888237c16ed8 of 8 bytes by interrupt on cpu 0: clockevents_program_event+0x35/0x1e0 kernel/time/clockevents.c:313 tick_program_event+0x78/0xc0 kernel/time/tick-oneshot.c:44 hrtimer_interrupt+0x895/0xaf0 kernel/time/hrtimer.c:1676 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1089 [inline] __sysvec_apic_timer_interrupt+0x6f/0x1c0 arch/x86/kernel/apic/apic.c:1106 sysvec_apic_timer_interrupt+0x64/0x80 arch/x86/kernel/apic/apic.c:1100 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:632 check_kcov_mode kernel/kcov.c:165 [inline] __sanitizer_cov_trace_pc+0x33/0x60 kernel/kcov.c:197 number+0x821/0xb50 lib/vsprintf.c:529 vsnprintf+0xb6d/0xed0 lib/vsprintf.c:2717 seq_vprintf+0x71/0xd0 fs/seq_file.c:395 SEQ_printf+0x76/0xb0 kernel/time/timer_list.c:38 print_timer kernel/time/timer_list.c:52 [inline] print_active_timers kernel/time/timer_list.c:91 [inline] print_base kernel/time/timer_list.c:112 [inline] print_cpu+0x2e5/0x690 kernel/time/timer_list.c:123 timer_list_show+0x114/0x180 kernel/time/timer_list.c:283 seq_read_iter+0x60b/0x910 fs/seq_file.c:269 proc_reg_read_iter+0xfc/0x170 fs/proc/inode.c:310 call_read_iter include/linux/fs.h:1971 [inline] generic_file_splice_read+0x22a/0x310 fs/splice.c:311 do_splice_to fs/splice.c:796 [inline] splice_direct_to_actor+0x2aa/0x650 fs/splice.c:870 do_splice_direct+0xf5/0x170 fs/splice.c:979 do_sendfile+0x773/0xda0 fs/read_write.c:1260 __do_sys_sendfile64 fs/read_write.c:1325 [inline] __se_sys_sendfile64 fs/read_write.c:1311 [inline] __x64_sys_sendfile64+0xf2/0x130 fs/read_write.c:1311 do_syscall_64+0x34/0x50 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xae read to 0xffff888237c16ed8 of 8 bytes by task 7741 on cpu 1: print_tickdevice+0x157/0x300 kernel/time/timer_list.c:204 timer_list_show+0x74/0x180 kernel/time/timer_list.c:288 seq_read_iter+0x60b/0x910 fs/seq_file.c:269 proc_reg_read_iter+0xfc/0x170 fs/proc/inode.c:310 call_read_iter include/linux/fs.h:1971 [inline] generic_file_splice_read+0x22a/0x310 fs/splice.c:311 do_splice_to fs/splice.c:796 [inline] splice_direct_to_actor+0x2aa/0x650 fs/splice.c:870 do_splice_direct+0xf5/0x170 fs/splice.c:979 do_sendfile+0x773/0xda0 fs/read_write.c:1260 __do_sys_sendfile64 fs/read_write.c:1325 [inline] __se_sys_sendfile64 fs/read_write.c:1311 [inline] __x64_sys_sendfile64+0xf2/0x130 fs/read_write.c:1311 do_syscall_64+0x34/0x50 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xae Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 7741 Comm: syz-executor.2 Not tainted 5.12.0-rc8-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================