================================================================== BUG: KCSAN: data-race in hrtimer_interrupt / print_cpu write to 0xffff88813bc1da10 of 1 bytes by interrupt on cpu 0: hrtimer_interrupt+0x1ea/0xaf0 kernel/time/hrtimer.c:1647 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1089 [inline] __sysvec_apic_timer_interrupt+0x6f/0x200 arch/x86/kernel/apic/apic.c:1106 sysvec_apic_timer_interrupt+0x69/0x80 arch/x86/kernel/apic/apic.c:1100 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:632 tomoyo_check_path_acl+0x15/0xe0 security/tomoyo/file.c:254 tomoyo_check_acl+0xcc/0x220 security/tomoyo/domain.c:175 tomoyo_path_permission security/tomoyo/file.c:586 [inline] tomoyo_check_open_permission+0x17f/0x370 security/tomoyo/file.c:777 tomoyo_file_open+0xd3/0xf0 security/tomoyo/tomoyo.c:313 security_file_open+0x3f/0x90 security/security.c:1589 do_dentry_open+0x22d/0x890 fs/open.c:813 vfs_open+0x43/0x50 fs/open.c:940 do_open fs/namei.c:3367 [inline] path_openat+0x1982/0x21b0 fs/namei.c:3500 do_filp_open+0xd9/0x1f0 fs/namei.c:3527 do_sys_openat2+0xa3/0x250 fs/open.c:1187 do_sys_open fs/open.c:1203 [inline] __do_sys_open fs/open.c:1211 [inline] __se_sys_open fs/open.c:1207 [inline] __x64_sys_open+0xe2/0x110 fs/open.c:1207 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xae read to 0xffff88813bc1da10 of 1 bytes by task 21142 on cpu 1: print_cpu+0x357/0x690 kernel/time/timer_list.c:134 timer_list_show+0x114/0x180 kernel/time/timer_list.c:283 seq_read_iter+0x2ef/0x910 fs/seq_file.c:227 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+0x7a6/0xe20 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+0x39/0x80 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xae Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 21142 Comm: syz-executor.1 Tainted: G W 5.12.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================