KCSAN: data-race in __mod_timer / expire

KCSAN: data-race in __mod_timer / expire_timers
Status: auto-closed as invalid on 2021/05/19 22:44
Reported-by: syzbot+aa7c2385d46c5eba0b89@syzkaller.appspotmail.com
First crash: 496d, last: 196d

similar bugs (1):
Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
upstream	KCSAN: data-race in __mod_timer / expire_timers (2)				1	155d	155d	0/22	auto-closed as invalid on 2021/06/30 10:55

Sample crash report:

==================================================================
BUG: KCSAN: data-race in __mod_timer / expire_timers

write to 0xffff88813bc1b908 of 8 bytes by interrupt on cpu 0:
 expire_timers+0x164/0x260 kernel/time/timer.c:1472
 __run_timers+0x358/0x3f0 kernel/time/timer.c:1745
 run_timer_softirq+0x19/0x30 kernel/time/timer.c:1758
 __do_softirq+0x13c/0x2c3 kernel/softirq.c:345
 invoke_softirq kernel/softirq.c:221 [inline]
 __irq_exit_rcu+0xb4/0xc0 kernel/softirq.c:422
 sysvec_apic_timer_interrupt+0x6e/0x80 arch/x86/kernel/apic/apic.c:1100
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:632
 native_safe_halt arch/x86/include/asm/irqflags.h:51 [inline]
 arch_safe_halt arch/x86/include/asm/irqflags.h:89 [inline]
 acpi_safe_halt drivers/acpi/processor_idle.c:111 [inline]
 acpi_idle_do_entry drivers/acpi/processor_idle.c:517 [inline]
 acpi_idle_enter+0x25b/0x2e0 drivers/acpi/processor_idle.c:652
 cpuidle_enter_state+0x2b6/0x7c0 drivers/cpuidle/cpuidle.c:237
 cpuidle_enter+0x3c/0x60 drivers/cpuidle/cpuidle.c:351
 call_cpuidle kernel/sched/idle.c:158 [inline]
 cpuidle_idle_call kernel/sched/idle.c:239 [inline]
 do_idle+0x193/0x230 kernel/sched/idle.c:300
 cpu_startup_entry+0x15/0x20 kernel/sched/idle.c:397
 rest_init+0xd7/0xe0 init/main.c:721
 arch_call_rest_init+0xa/0xb
 start_kernel+0x5a1/0x626 init/main.c:1064
 secondary_startup_64_no_verify+0xb0/0xbb

read to 0xffff88813bc1b908 of 8 bytes by task 24 on cpu 1:
 __mod_timer+0x44e/0xc10 kernel/time/timer.c:1035
 add_timer+0x38/0x50 kernel/time/timer.c:1142
 __queue_delayed_work+0xec/0x150 kernel/workqueue.c:1655
 queue_delayed_work_on+0x6f/0xd0 kernel/workqueue.c:1680
 queue_delayed_work include/linux/workqueue.h:522 [inline]
 bond_mii_monitor+0x156d/0x15f0 drivers/net/bonding/bond_main.c:2555
 process_one_work+0x3e1/0x950 kernel/workqueue.c:2275
 worker_thread+0x616/0xa70 kernel/workqueue.c:2421
 kthread+0x20b/0x230 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 24 Comm: kworker/u4:1 Tainted: G        W         5.12.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: bond8 bond_mii_monitor
==================================================================
tipc: Subscription rejected, illegal request

Crashes (343):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	VM info	Title
ci2-upstream-kcsan-gce	2021/04/14 22:43	upstream	7f75285ca572	fcdb12ba	.config	log	report	info	KCSAN: data-race in __mod_timer / expire_timers
ci2-upstream-kcsan-gce	2021/04/13 00:03	upstream	89698becf06d	6a81331a	.config	log	report	info	KCSAN: data-race in __mod_timer / expire_timers
ci2-upstream-kcsan-gce	2021/04/10 15:15	upstream	d4961772226d	6a81331a	.config	log	report	info	KCSAN: data-race in __mod_timer / expire_timers
ci2-upstream-kcsan-gce	2021/04/06 21:53	upstream	2d743660786e	6a81331a	.config	log	report	info	KCSAN: data-race in __mod_timer / expire_timers
ci2-upstream-kcsan-gce	2021/04/04 22:42	upstream	e49d033bddf5	6a81331a	.config	log	report	info	KCSAN: data-race in __mod_timer / expire_timers
ci2-upstream-kcsan-gce	2021/04/03 13:30	upstream	d93a0d43e3d0	6a81331a	.config	log	report	info	KCSAN: data-race in __mod_timer / expire_timers
ci2-upstream-kcsan-gce	2021/03/31 19:23	upstream	d19cc4bfbff1	6a81331a	.config	log	report	info	KCSAN: data-race in __mod_timer / expire_timers
ci2-upstream-kcsan-gce	2021/03/25 22:21	upstream	002322402daf	6a383ecf	.config	log	report	info	KCSAN: data-race in __mod_timer / expire_timers
ci2-upstream-kcsan-gce	2021/03/22 03:14	upstream	5ee96fa9dd78	bea32f74	.config	log	report	info	KCSAN: data-race in __mod_timer / expire_timers
ci2-upstream-kcsan-gce	2021/03/16 19:40	upstream	1df27313f50a	fdb2bb2c	.config	log	report	info	KCSAN: data-race in __mod_timer / expire_timers
ci2-upstream-kcsan-gce	2021/03/13 22:00	upstream	88fe49249c99	4a003785	.config	log	report	info	KCSAN: data-race in __mod_timer / expire_timers
ci2-upstream-kcsan-gce	2021/03/13 07:40	upstream	f296bfd5cd04	4a003785	.config	log	report	info	KCSAN: data-race in __mod_timer / expire_timers
ci2-upstream-kcsan-gce	2021/03/12 23:51	upstream	f296bfd5cd04	429d8a6b	.config	log	report	info	KCSAN: data-race in __mod_timer / expire_timers
ci2-upstream-kcsan-gce	2021/03/10 05:57	upstream	05a59d79793d	26967e35	.config	log	report	info	KCSAN: data-race in __mod_timer / expire_timers
ci2-upstream-kcsan-gce	2021/03/04 17:52	upstream	f69d02e37a85	f89ed068	.config	log	report	info	KCSAN: data-race in __mod_timer / expire_timers
ci2-upstream-kcsan-gce	2021/02/22 14:18	upstream	31caf8b2a847	c26fb06b	.config	log	report	info	KCSAN: data-race in __mod_timer / expire_timers
ci2-upstream-kcsan-gce	2021/02/20 10:27	upstream	f40ddce88593	3e5ed8b4	.config	log	report	info	KCSAN: data-race in __mod_timer / expire_timers
ci2-upstream-kcsan-gce	2021/02/19 15:12	upstream	f40ddce88593	f689d40a	.config	log	report	info	KCSAN: data-race in __mod_timer / expire_timers
ci2-upstream-kcsan-gce	2021/02/15 01:56	upstream	f40ddce88593	98682e5e	.config	log	report	info	KCSAN: data-race in __mod_timer / expire_timers
ci2-upstream-kcsan-gce	2021/02/14 12:24	upstream	358feceebbf6	98682e5e	.config	log	report	info	KCSAN: data-race in __mod_timer / expire_timers
ci2-upstream-kcsan-gce	2021/02/10 22:15	upstream	291009f656e8	a52ee10a	.config	log	report	info	KCSAN: data-race in __mod_timer / expire_timers
ci2-upstream-kcsan-gce	2021/02/08 11:37	upstream	92bf22614b21	2ce644fc	.config	log	report	info	KCSAN: data-race in __mod_timer / expire_timers
ci2-upstream-kcsan-gce	2021/02/06 23:43	upstream	964d069f93c4	0655e081	.config	log	report	info	KCSAN: data-race in __mod_timer / expire_timers
ci2-upstream-kcsan-gce	2021/02/06 02:45	upstream	1e0d27fce010	23a562df	.config	log	report	info	KCSAN: data-race in __mod_timer / expire_timers
ci2-upstream-kcsan-gce	2021/02/05 13:45	upstream	dd86e7fa07a3	23a562df	.config	log	report	info	KCSAN: data-race in __mod_timer / expire_timers
ci2-upstream-kcsan-gce	2021/02/05 02:02	upstream	5c279c4cf206	23a562df	.config	log	report	info	KCSAN: data-race in __mod_timer / expire_timers
ci2-upstream-kcsan-gce	2021/01/31 12:48	upstream	6642d600b541	fc9fd31e	.config	log	report	info	KCSAN: data-race in __mod_timer / expire_timers
ci2-upstream-kcsan-gce	2021/01/28 19:59	upstream	e5ff2cb9cf67	7df34f59	.config	log	report	info	KCSAN: data-race in __mod_timer / expire_timers
ci2-upstream-kcsan-gce	2021/01/27 20:01	upstream	76c057c84d28	a57db36f	.config	log	report	info	KCSAN: data-race in __mod_timer / expire_timers
ci2-upstream-kcsan-gce	2021/01/27 18:06	upstream	2ab38c17aac1	a57db36f	.config	log	report	info	KCSAN: data-race in __mod_timer / expire_timers
ci2-upstream-kcsan-gce	2021/01/24 19:21	upstream	e68061375f79	52e37319	.config	log	report	info	KCSAN: data-race in __mod_timer / expire_timers
ci2-upstream-kcsan-gce	2021/01/22 21:13	upstream	83d09ad4b950	52e37319	.config	log	report	info	KCSAN: data-race in __mod_timer / expire_timers
ci2-upstream-kcsan-gce	2021/01/21 14:24	upstream	9791581c049c	d4f4eca5	.config	log	report	info	KCSAN: data-race in __mod_timer / expire_timers
ci2-upstream-kcsan-gce	2021/01/20 22:30	upstream	75439bc439e0	d4f4eca5	.config	log	report	info	KCSAN: data-race in __mod_timer / expire_timers
ci2-upstream-kcsan-gce	2021/01/20 05:47	upstream	45dfb8a5659a	63631df1	.config	log	report	info	KCSAN: data-race in __mod_timer / expire_timers
ci2-upstream-kcsan-gce	2021/01/18 22:24	upstream	1e2a199f6ccd	63631df1	.config	log	report	info	KCSAN: data-race in __mod_timer / expire_timers
ci2-upstream-kcsan-gce	2021/01/18 04:26	upstream	19c329f68089	fd103621	.config	log	report	info	KCSAN: data-race in __mod_timer / expire_timers
ci2-upstream-kcsan-gce	2021/01/14 23:57	upstream	146620506274	468dbb55	.config	log	report	info
ci2-upstream-kcsan-gce	2021/01/13 23:30	upstream	65f0d2414b70	269d24e8	.config	log	report	info
ci2-upstream-kcsan-gce	2021/01/13 21:15	upstream	65f0d2414b70	a945f0a3	.config	log	report	info
ci2-upstream-kcsan-gce	2021/01/12 19:46	upstream	e609571b5ffa	0cdd6185	.config	log	report	info
ci2-upstream-kcsan-gce	2021/01/09 11:22	upstream	996e435fd401	a6c52263	.config	log	report	info
ci2-upstream-kcsan-gce	2021/01/06 23:48	upstream	71c061d24438	c104d4a3	.config	log	report	info
ci2-upstream-kcsan-gce	2021/01/05 21:23	upstream	6207214a70bf	a0234d98	.config	log	report	info
ci2-upstream-kcsan-gce	2021/01/04 21:39	upstream	36bbbd0e234d	2a28ff1f	.config	log	report	info
ci2-upstream-kcsan-gce	2020/07/05 00:56	upstream	35e884f89df4	24d7f505	.config	log	report
ci2-upstream-kcsan-gce	2020/06/18 14:06	upstream	1b5044021070	3ea11d3f	.config	log	report