================================================================== BUG: KCSAN: data-race in hrtimer_interrupt / print_cpu read-write to 0xffff888237c1ed54 of 4 bytes by interrupt on cpu 0: hrtimer_interrupt+0x6f/0x7b0 kernel/time/hrtimer.c:1792 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1098 [inline] __sysvec_apic_timer_interrupt+0x73/0x210 arch/x86/kernel/apic/apic.c:1115 sysvec_apic_timer_interrupt+0x68/0x80 arch/x86/kernel/apic/apic.c:1109 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645 native_safe_halt arch/x86/include/asm/irqflags.h:48 [inline] arch_safe_halt arch/x86/include/asm/irqflags.h:86 [inline] acpi_safe_halt+0x20/0x30 drivers/acpi/processor_idle.c:112 acpi_idle_do_entry+0x19/0x30 drivers/acpi/processor_idle.c:573 acpi_idle_enter+0x96/0xb0 drivers/acpi/processor_idle.c:707 cpuidle_enter_state+0xc6/0x260 drivers/cpuidle/cpuidle.c:267 cpuidle_enter+0x40/0x60 drivers/cpuidle/cpuidle.c:388 call_cpuidle kernel/sched/idle.c:134 [inline] cpuidle_idle_call kernel/sched/idle.c:215 [inline] do_idle+0x194/0x230 kernel/sched/idle.c:282 cpu_startup_entry+0x18/0x20 kernel/sched/idle.c:379 rest_init+0xf3/0x100 init/main.c:726 arch_call_rest_init+0x9/0x10 init/main.c:823 start_kernel+0x57d/0x5d0 init/main.c:1068 x86_64_start_reservations+0x2a/0x30 arch/x86/kernel/head64.c:556 x86_64_start_kernel+0x94/0xa0 arch/x86/kernel/head64.c:537 secondary_startup_64_no_verify+0x168/0x16b read to 0xffff888237c1ed54 of 4 bytes by task 11635 on cpu 1: print_cpu+0x348/0x640 kernel/time/timer_list.c:135 timer_list_show+0x115/0x180 kernel/time/timer_list.c:291 traverse+0x142/0x3a0 fs/seq_file.c:111 seq_read_iter+0x804/0x8f0 fs/seq_file.c:195 proc_reg_read_iter+0x114/0x180 fs/proc/inode.c:305 call_read_iter include/linux/fs.h:1865 [inline] copy_splice_read+0x26b/0x4b0 fs/splice.c:367 vfs_splice_read fs/splice.c:994 [inline] splice_direct_to_actor+0x28c/0x690 fs/splice.c:1070 do_splice_direct+0x10d/0x190 fs/splice.c:1195 do_sendfile+0x3b6/0x9a0 fs/read_write.c:1254 __do_sys_sendfile64 fs/read_write.c:1316 [inline] __se_sys_sendfile64 fs/read_write.c:1308 [inline] __x64_sys_sendfile64+0xbd/0x150 fs/read_write.c:1308 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd value changed: 0x000b8387 -> 0x000b8388 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 11635 Comm: syz-executor.1 Not tainted 6.5.0-rc3-syzkaller-00018-g0b5547c51827 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023 ==================================================================