================================================================== BUG: KCSAN: data-race in print_cpu / tick_irq_enter read-write to 0xffff888237c1e100 of 8 bytes by interrupt on cpu 0: tick_nohz_stop_idle kernel/time/tick-sched.c:664 [inline] tick_nohz_irq_enter kernel/time/tick-sched.c:1429 [inline] tick_irq_enter+0x127/0x210 kernel/time/tick-sched.c:1455 common_interrupt+0x8f/0xc0 arch/x86/kernel/irq.c:240 asm_common_interrupt+0x22/0x40 native_safe_halt arch/x86/include/asm/irqflags.h:51 [inline] arch_safe_halt arch/x86/include/asm/irqflags.h:89 [inline] acpi_safe_halt drivers/acpi/processor_idle.c:112 [inline] acpi_idle_do_entry drivers/acpi/processor_idle.c:555 [inline] acpi_idle_enter+0x283/0x310 drivers/acpi/processor_idle.c:692 cpuidle_enter_state+0x2ee/0x7a0 drivers/cpuidle/cpuidle.c:238 cpuidle_enter+0x3c/0x60 drivers/cpuidle/cpuidle.c:352 call_cpuidle kernel/sched/idle.c:155 [inline] cpuidle_idle_call kernel/sched/idle.c:236 [inline] do_idle+0x1b2/0x250 kernel/sched/idle.c:303 cpu_startup_entry+0x15/0x20 kernel/sched/idle.c:400 rest_init+0xe8/0xf0 init/main.c:727 start_kernel+0x0/0x656 init/main.c:883 start_kernel+0x5d1/0x656 init/main.c:1138 secondary_startup_64_no_verify+0xcf/0xdb read to 0xffff888237c1e100 of 8 bytes by task 9464 on cpu 1: print_cpu+0x56c/0x680 kernel/time/timer_list.c:161 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:2183 [inline] generic_file_splice_read+0xe0/0x1c0 fs/splice.c:311 do_splice_to fs/splice.c:796 [inline] splice_direct_to_actor+0x26c/0x620 fs/splice.c:868 do_splice_direct+0xfb/0x180 fs/splice.c:977 do_sendfile+0x3bf/0x910 fs/read_write.c:1251 __do_sys_sendfile64 fs/read_write.c:1319 [inline] __se_sys_sendfile64 fs/read_write.c:1305 [inline] __x64_sys_sendfile64+0x10c/0x150 fs/read_write.c:1305 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: 0x000000245bb882a6 -> 0x000000245bb8be47 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 9464 Comm: syz-executor.2 Not tainted 5.19.0-syzkaller-12689-g3bc1bc0b59d0-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 ==================================================================