================================================================== BUG: KCSAN: data-race in hrtimer_interrupt / print_tickdevice write to 0xffff888237d1bf18 of 8 bytes by interrupt on cpu 1: hrtimer_interrupt+0x7d/0x7b0 kernel/time/hrtimer.c:1790 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1096 [inline] __sysvec_apic_timer_interrupt+0x73/0x210 arch/x86/kernel/apic/apic.c:1113 sysvec_apic_timer_interrupt+0x68/0x80 arch/x86/kernel/apic/apic.c:1107 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645 __sanitizer_cov_trace_const_cmp1+0x0/0x90 kernel/kcov.c:285 __preempt_count_dec_and_test arch/x86/include/asm/preempt.h:95 [inline] smpboot_thread_fn+0x2df/0x4a0 kernel/smpboot.c:163 kthread+0x1a6/0x1e0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 read to 0xffff888237d1bf18 of 8 bytes by task 4824 on cpu 0: print_tickdevice+0x144/0x340 kernel/time/timer_list.c:204 timer_list_show+0x79/0x180 kernel/time/timer_list.c:296 seq_read_iter+0x612/0x8f0 fs/seq_file.c:272 proc_reg_read_iter+0x10e/0x180 fs/proc/inode.c:305 call_read_iter include/linux/fs.h:1845 [inline] generic_file_splice_read+0xe3/0x290 fs/splice.c:402 do_splice_to fs/splice.c:885 [inline] splice_direct_to_actor+0x25a/0x5f0 fs/splice.c:956 do_splice_direct+0x104/0x180 fs/splice.c:1065 do_sendfile+0x3b8/0x950 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: 0x000000183bbb4853 -> 0x000000183bc2297e Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 4824 Comm: syz-executor.1 Not tainted 6.3.0-syzkaller-00113-g1a0beef98b58 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023 ==================================================================