================================================================== BUG: KCSAN: data-race in run_timer_softirq / try_to_del_timer_sync write to 0xffff88812c01dc88 of 8 bytes by interrupt on cpu 0: expire_timers kernel/time/timer.c:1446 [inline] __run_timers kernel/time/timer.c:1774 [inline] __run_timers kernel/time/timer.c:1741 [inline] run_timer_softirq+0x440/0xbd0 kernel/time/timer.c:1787 __do_softirq+0x118/0x34a kernel/softirq.c:292 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0xb5/0xd0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:546 [inline] smp_apic_timer_interrupt+0xe2/0x270 arch/x86/kernel/apic/apic.c:1140 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829 __write_once_size include/linux/compiler.h:250 [inline] __sanitizer_cov_trace_pc+0x47/0x50 kernel/kcov.c:195 tomoyo_domain_quota_is_ok+0x249/0x2b0 security/tomoyo/util.c:1070 tomoyo_supervisor+0x1d9/0xc90 security/tomoyo/common.c:2089 tomoyo_audit_path_log security/tomoyo/file.c:168 [inline] tomoyo_path_permission security/tomoyo/file.c:587 [inline] tomoyo_path_permission+0x118/0x150 security/tomoyo/file.c:573 tomoyo_path_perm+0x215/0x350 security/tomoyo/file.c:838 tomoyo_inode_getattr+0x23/0x40 security/tomoyo/tomoyo.c:129 security_inode_getattr+0x97/0xc0 security/security.c:1273 vfs_getattr+0x2c/0x70 fs/stat.c:117 vfs_statx+0x104/0x190 fs/stat.c:201 vfs_lstat include/linux/fs.h:3284 [inline] __do_sys_newlstat+0x50/0xb0 fs/stat.c:364 __se_sys_newlstat fs/stat.c:358 [inline] __x64_sys_newlstat+0x37/0x50 fs/stat.c:358 do_syscall_64+0xc7/0x3b0 arch/x86/entry/common.c:295 entry_SYSCALL_64_after_hwframe+0x44/0xa9 read to 0xffff88812c01dc88 of 8 bytes by task 10 on cpu 1: try_to_del_timer_sync+0x40/0xb0 kernel/time/timer.c:1226 del_timer_sync+0x68/0xa0 kernel/time/timer.c:1366 schedule_timeout+0x106/0x280 kernel/time/timer.c:1899 rcu_gp_fqs_loop+0x34c/0x540 kernel/rcu/tree.c:1674 rcu_gp_kthread+0x113/0x1e0 kernel/rcu/tree.c:1836 kthread+0x203/0x230 kernel/kthread.c:268 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:352 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 10 Comm: rcu_preempt Not tainted 5.7.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================