================================================================== BUG: KCSAN: data-race in add_timer / run_timer_softirq 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 is_atomic kernel/kcsan/core.c:229 [inline] should_watch kernel/kcsan/core.c:257 [inline] check_access kernel/kcsan/core.c:581 [inline] __tsan_read1+0xa8/0x110 kernel/kcsan/core.c:767 tomoyo_check_acl+0xbe/0x280 security/tomoyo/domain.c:173 tomoyo_path_permission security/tomoyo/file.c:586 [inline] tomoyo_path_permission+0xda/0x150 security/tomoyo/file.c:573 tomoyo_check_open_permission+0x2aa/0x2d0 security/tomoyo/file.c:777 tomoyo_file_open security/tomoyo/tomoyo.c:319 [inline] tomoyo_file_open+0x6c/0x90 security/tomoyo/tomoyo.c:314 security_file_open+0x64/0x280 security/security.c:1548 do_dentry_open+0x212/0x970 fs/open.c:784 vfs_open+0x62/0x80 fs/open.c:911 do_open fs/namei.c:3229 [inline] path_openat+0x1ff4/0x23d0 fs/namei.c:3346 do_filp_open+0x11e/0x1b0 fs/namei.c:3373 do_sys_openat2+0x52e/0x680 fs/open.c:1148 do_sys_open+0xa2/0x110 fs/open.c:1164 ksys_open include/linux/syscalls.h:1386 [inline] __do_sys_open fs/open.c:1170 [inline] __se_sys_open fs/open.c:1168 [inline] __x64_sys_open+0x50/0x60 fs/open.c:1168 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 7 on cpu 1: __mod_timer kernel/time/timer.c:1027 [inline] add_timer+0x175/0x550 kernel/time/timer.c:1137 __queue_delayed_work+0x13c/0x1d0 kernel/workqueue.c:1648 queue_delayed_work_on+0xef/0x110 kernel/workqueue.c:1673 queue_delayed_work include/linux/workqueue.h:522 [inline] bond_alb_monitor+0x2a9/0x900 drivers/net/bonding/bond_alb.c:1604 process_one_work+0x424/0x930 kernel/workqueue.c:2268 worker_thread+0x9a/0x7e0 kernel/workqueue.c:2414 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: 7 Comm: kworker/u4:0 Not tainted 5.7.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: bond3 bond_alb_monitor ==================================================================