KCSAN: data-race in add_timer / run_timer

Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
upstream	KCSAN: data-race in add_timer / run_timer_softirq (2) fs				81	1689d	1760d	0/28	auto-closed as invalid on 2020/07/18 23:41

================================================================== BUG: KCSAN: data-race in add_timer / run_timer_softirq write to 0xffff88812bf1b6c8 of 8 bytes by interrupt on cpu 1: expire_timers kernel/time/timer.c:1445 [inline] __run_timers kernel/time/timer.c:1773 [inline] __run_timers kernel/time/timer.c:1740 [inline] run_timer_softirq+0x496/0xcd0 kernel/time/timer.c:1786 __do_softirq+0x115/0x33f kernel/softirq.c:292 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0xbb/0xe0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0xe6/0x280 arch/x86/kernel/apic/apic.c:1137 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:830 native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:60 arch_cpu_idle+0xa/0x10 arch/x86/kernel/process.c:571 default_idle_call+0x1e/0x40 kernel/sched/idle.c:94 cpuidle_idle_call kernel/sched/idle.c:154 [inline] do_idle+0x1af/0x280 kernel/sched/idle.c:263 cpu_startup_entry+0x1b/0x20 kernel/sched/idle.c:355 start_secondary+0x168/0x1b0 arch/x86/kernel/smpboot.c:264 secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:241 read to 0xffff88812bf1b6c8 of 8 bytes by task 23 on cpu 0: __mod_timer kernel/time/timer.c:1026 [inline] mod_timer kernel/time/timer.c:1100 [inline] add_timer+0x16f/0x550 kernel/time/timer.c:1136 __queue_delayed_work+0x13b/0x1d0 kernel/workqueue.c:1649 queue_delayed_work_on+0xf3/0x110 kernel/workqueue.c:1674 queue_delayed_work include/linux/workqueue.h:509 [inline] bond_netdev_notify_work drivers/net/bonding/bond_main.c:1355 [inline] bond_netdev_notify_work+0x150/0x160 drivers/net/bonding/bond_main.c:1342 process_one_work+0x3d4/0x890 kernel/workqueue.c:2269 worker_thread+0xa0/0x800 kernel/workqueue.c:2415 kthread+0x1d4/0x200 drivers/block/aoe/aoecmd.c:1253 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:352 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 23 Comm: kworker/u4:2 Not tainted 5.4.0-rc7+ #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: bond0 bond_netdev_notify_work ==================================================================

Crashes (11):
Time	Kernel	Commit	Syzkaller	Config	Log	Report	Manager
2019/11/15 06:35	https://github.com/google/ktsan.git kcsan	5863cc791e4c	79248ee8	.config	console log	report	ci2-upstream-kcsan-gce
2019/11/12 08:55	https://github.com/google/ktsan.git kcsan	7f2955e0d056	048f2d49	.config	console log	report	ci2-upstream-kcsan-gce
2019/11/06 14:50	https://github.com/google/ktsan.git kcsan	94c006602e13	da505f84	.config	console log	report	ci2-upstream-kcsan-gce
2019/11/04 12:08	https://github.com/google/ktsan.git kcsan	05f2236801fe	18e12644	.config	console log	report	ci2-upstream-kcsan-gce
2019/11/04 12:06	https://github.com/google/ktsan.git kcsan	05f2236801fe	18e12644	.config	console log	report	ci2-upstream-kcsan-gce
2019/11/03 21:40	https://github.com/google/ktsan.git kcsan	05f2236801fe	b35fad31	.config	console log	report	ci2-upstream-kcsan-gce
2019/11/02 21:10	https://github.com/google/ktsan.git kcsan	05f2236801fe	d603afc9	.config	console log	report	ci2-upstream-kcsan-gce
2019/10/30 20:53	https://github.com/google/ktsan.git kcsan	05f2236801fe	a41ca8fa	.config	console log	report	ci2-upstream-kcsan-gce
2019/10/23 14:21	https://github.com/google/ktsan.git kcsan	05f2236801fe	b602d64b	.config	console log	report	ci2-upstream-kcsan-gce
2019/10/17 14:51	https://github.com/google/ktsan.git kcsan	05f2236801fe	8c88c9c1	.config	console log	report	ci2-upstream-kcsan-gce
2019/10/15 23:43	https://github.com/google/ktsan.git kcsan	e3d315561216	d4ea592f	.config	console log	report	ci2-upstream-kcsan-gce

Crashes (11):

Assets (help?)