================================================================== BUG: KCSAN: data-race in hrtimer_interrupt / print_cpu read-write to 0xffff888237d1ed54 of 4 bytes by interrupt on cpu 1: 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 __preempt_count_dec_and_test arch/x86/include/asm/preempt.h:95 [inline] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:160 [inline] _raw_spin_unlock_irq+0x2f/0x40 kernel/locking/spinlock.c:202 spin_unlock_irq include/linux/spinlock.h:401 [inline] get_signal+0xc54/0xff0 kernel/signal.c:2884 arch_do_signal_or_restart+0x89/0x2a0 arch/x86/kernel/signal.c:308 exit_to_user_mode_loop+0x6f/0xe0 kernel/entry/common.c:168 exit_to_user_mode_prepare+0x6c/0xb0 kernel/entry/common.c:204 __syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline] syscall_exit_to_user_mode+0x26/0x140 kernel/entry/common.c:297 do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x63/0xcd read to 0xffff888237d1ed54 of 4 bytes by task 19116 on cpu 0: print_cpu+0x348/0x640 kernel/time/timer_list.c:135 timer_list_show+0x115/0x180 kernel/time/timer_list.c:291 seq_read_iter+0x612/0x8f0 fs/seq_file.c:272 proc_reg_read_iter+0x114/0x180 fs/proc/inode.c:305 call_read_iter include/linux/fs.h:1871 [inline] copy_splice_read+0x26b/0x4b0 fs/splice.c:367 vfs_splice_read fs/splice.c:996 [inline] splice_direct_to_actor+0x28c/0x690 fs/splice.c:1072 do_splice_direct+0x10d/0x190 fs/splice.c:1197 do_sendfile+0x3b6/0x9a0 fs/read_write.c:1254 __do_sys_sendfile64 fs/read_write.c:1322 [inline] __se_sys_sendfile64 fs/read_write.c:1308 [inline] __x64_sys_sendfile64+0x110/0x150 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: 0x002f27cb -> 0x002f27cc Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 19116 Comm: syz-executor.3 Not tainted 6.5.0-rc7-syzkaller-00164-g382d4cd18475 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023 ==================================================================