KCSAN: data-race in ps2_do_sendbyte / ps2_handle

KCSAN: data-race in ps2_do_sendbyte / ps2_handle_ack (3)
Status: moderation: reported on 2020/12/07 11:53
Reported-by: syzbot+85537422410fcb98abbd@syzkaller.appspotmail.com
First crash: 455d, last: 11d

similar bugs (2):
Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
upstream	KCSAN: data-race in ps2_do_sendbyte / ps2_handle_ack (2)				4	493d	512d	0/22	auto-closed as invalid on 2020/08/28 23:47
upstream	KCSAN: data-race in ps2_do_sendbyte / ps2_handle_ack				6	608d	673d	0/22	auto-closed as invalid on 2020/06/09 05:57

Sample crash report:

==================================================================
BUG: KCSAN: data-race in ps2_do_sendbyte / ps2_handle_ack

write to 0xffff888102e35840 of 8 bytes by interrupt on cpu 1:
 ps2_handle_ack+0x15a/0x350 drivers/input/serio/libps2.c:439
 atkbd_interrupt+0xbf7/0xcd0 drivers/input/keyboard/atkbd.c:434
 serio_interrupt+0x5d/0xe0 drivers/input/serio/serio.c:1001
 i8042_interrupt+0x39e/0x720 drivers/input/serio/i8042.c:602
 __handle_irq_event_percpu+0x93/0x480 kernel/irq/handle.c:158
 handle_irq_event_percpu kernel/irq/handle.c:198 [inline]
 handle_irq_event+0x9a/0x150 kernel/irq/handle.c:215
 handle_edge_irq+0x18e/0x5f0 kernel/irq/chip.c:822
 generic_handle_irq_desc include/linux/irqdesc.h:158 [inline]
 handle_irq arch/x86/kernel/irq.c:231 [inline]
 __common_interrupt+0x60/0x100 arch/x86/kernel/irq.c:250
 common_interrupt+0x9a/0xc0 arch/x86/kernel/irq.c:240
 asm_common_interrupt+0x1e/0x40
 kcsan_setup_watchpoint+0x94/0x420 kernel/kcsan/core.c:443
 crc32_body lib/crc32.c:111 [inline]
 crc32_le_generic lib/crc32.c:179 [inline]
 __crc32c_le_base+0xbf/0x350 lib/crc32.c:202
 chksum_update+0x2e/0x50 crypto/crct10dif_generic.c:56
 crypto_shash_update+0x13c/0x1a0 crypto/shash.c:131
 jbd2_chksum include/linux/jbd2.h:1797 [inline]
 jbd2_block_tag_csum_set fs/jbd2/commit.c:366 [inline]
 jbd2_journal_commit_transaction+0x1100/0x3460 fs/jbd2/commit.c:729
 kjournald2+0x263/0x480 fs/jbd2/journal.c:213
 kthread+0x2c7/0x2e0 kernel/kthread.c:327
 ret_from_fork+0x1f/0x30

read to 0xffff888102e35840 of 8 bytes by task 1543 on cpu 0:
 ps2_do_sendbyte+0x12e/0x3b0 drivers/input/serio/libps2.c:45
 __ps2_command+0x30d/0xa00 drivers/input/serio/libps2.c:273
 ps2_command+0x51/0x90 drivers/input/serio/libps2.c:332
 atkbd_set_repeat_rate drivers/input/keyboard/atkbd.c:595 [inline]
 atkbd_event_work+0x2d4/0x300 drivers/input/keyboard/atkbd.c:649
 process_one_work+0x3fc/0x980 kernel/workqueue.c:2298
 worker_thread+0x616/0xa70 kernel/workqueue.c:2445
 kthread+0x2c7/0x2e0 kernel/kthread.c:327
 ret_from_fork+0x1f/0x30

value changed: 0x0000000000000001 -> 0x0000000000000000

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 1543 Comm: kworker/0:3 Not tainted 5.16.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events atkbd_event_work
==================================================================

Crashes (169):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	VM info	Title
ci2-upstream-kcsan-gce	2021/11/18 06:26	upstream	ee1703cda8dc	cafff8b6	.config	log	report	info	KCSAN: data-race in ps2_do_sendbyte / ps2_handle_ack
ci2-upstream-kcsan-gce	2021/10/31 00:07	upstream	119c85055d86	098b5d53	.config	log	report	info	KCSAN: data-race in ps2_do_sendbyte / ps2_handle_ack
ci2-upstream-kcsan-gce	2021/10/29 04:10	upstream	411a44c24a56	be531bb4	.config	log	report	info	KCSAN: data-race in ps2_do_sendbyte / ps2_handle_ack
ci2-upstream-kcsan-gce	2021/10/27 10:33	upstream	d25f27432f80	d50eb50a	.config	log	report	info	KCSAN: data-race in ps2_do_sendbyte / ps2_handle_ack
ci2-upstream-kcsan-gce	2021/10/27 02:52	upstream	3906fe9bb7f1	d50eb50a	.config	log	report	info	KCSAN: data-race in ps2_do_sendbyte / ps2_handle_ack
ci2-upstream-kcsan-gce	2021/10/24 19:56	upstream	9c0c4d24ac00	282f03fb	.config	log	report	info	KCSAN: data-race in ps2_do_sendbyte / ps2_handle_ack
ci2-upstream-kcsan-gce	2021/10/22 05:37	upstream	2f111a6fd5b5	55f90bc6	.config	log	report	info	KCSAN: data-race in ps2_do_sendbyte / ps2_handle_ack
ci2-upstream-kcsan-gce	2021/10/18 13:43	upstream	cf52ad5ff16c	0c5d9412	.config	log	report	info	KCSAN: data-race in ps2_do_sendbyte / ps2_handle_ack
ci2-upstream-kcsan-gce	2021/10/16 05:41	upstream	8fe31e0995f0	0c5d9412	.config	log	report	info	KCSAN: data-race in ps2_do_sendbyte / ps2_handle_ack
ci2-upstream-kcsan-gce	2021/10/12 10:20	upstream	fa5878760579	838e7e2c	.config	log	report	info	KCSAN: data-race in ps2_do_sendbyte / ps2_handle_ack
ci2-upstream-kcsan-gce	2021/10/09 17:18	upstream	5d6ab0bb408f	838e7e2c	.config	log	report	info	KCSAN: data-race in ps2_do_sendbyte / ps2_handle_ack
ci2-upstream-kcsan-gce	2021/09/28 20:13	upstream	d33bec7b3dfa	d82cb927	.config	log	report	info	KCSAN: data-race in ps2_do_sendbyte / ps2_handle_ack
ci2-upstream-kcsan-gce	2021/09/25 02:26	upstream	7d42e9818258	8cac236e	.config	log	report	info	KCSAN: data-race in ps2_do_sendbyte / ps2_handle_ack
ci2-upstream-kcsan-gce	2021/09/23 14:26	upstream	58e2cf5d7946	8cac236e	.config	log	report	info	KCSAN: data-race in ps2_do_sendbyte / ps2_handle_ack
ci2-upstream-kcsan-gce	2021/09/17 08:29	upstream	bdb575f87217	5b989942	.config	log	report	info	KCSAN: data-race in ps2_do_sendbyte / ps2_handle_ack
ci2-upstream-kcsan-gce	2021/09/15 09:34	upstream	3ca706c189db	07e953c1	.config	log	report	info	KCSAN: data-race in ps2_do_sendbyte / ps2_handle_ack
ci2-upstream-kcsan-gce	2021/09/03 23:36	upstream	a9c9a6f741cd	d236a457	.config	log	report	info	KCSAN: data-race in ps2_do_sendbyte / ps2_handle_ack
ci2-upstream-kcsan-gce	2021/08/28 16:52	upstream	64b4fc45bea6	d5a29e53	.config	log	report	info	KCSAN: data-race in ps2_do_sendbyte / ps2_handle_ack
ci2-upstream-kcsan-gce	2021/08/27 13:56	upstream	77dd11439b86	b318694d	.config	log	report	info	KCSAN: data-race in ps2_do_sendbyte / ps2_handle_ack
ci2-upstream-kcsan-gce	2021/08/22 07:20	upstream	9ff50bf2f2ff	b599f2fc	.config	log	report	info	KCSAN: data-race in ps2_do_sendbyte / ps2_handle_ack
ci2-upstream-kcsan-gce	2021/08/18 15:22	upstream	614cb2751d31	a2fe1cb5	.config	log	report	info	KCSAN: data-race in ps2_do_sendbyte / ps2_handle_ack
ci2-upstream-kcsan-gce	2021/08/14 18:44	upstream	ba31f97d43be	2489ab88	.config	log	report	info	KCSAN: data-race in ps2_do_sendbyte / ps2_handle_ack
ci2-upstream-kcsan-gce	2021/08/11 18:30	upstream	761c6d7ec820	6972b106	.config	log	report	info	KCSAN: data-race in ps2_do_sendbyte / ps2_handle_ack
ci2-upstream-kcsan-gce	2021/08/09 12:13	upstream	36a21d51725a	6972b106	.config	log	report	info	KCSAN: data-race in ps2_do_sendbyte / ps2_handle_ack
ci2-upstream-kcsan-gce	2021/08/09 02:43	upstream	66745863ecde	6972b106	.config	log	report	info	KCSAN: data-race in ps2_do_sendbyte / ps2_handle_ack
ci2-upstream-kcsan-gce	2021/08/05 08:58	upstream	251a1524293d	7f7bb950	.config	log	report	info	KCSAN: data-race in ps2_do_sendbyte / ps2_handle_ack
ci2-upstream-kcsan-gce	2021/08/04 15:11	upstream	d5ad8ec3cfb5	6c236867	.config	log	report	info	KCSAN: data-race in ps2_do_sendbyte / ps2_handle_ack
ci2-upstream-kcsan-gce	2021/08/02 11:34	upstream	c500bee1c5b2	6c236867	.config	log	report	info	KCSAN: data-race in ps2_do_sendbyte / ps2_handle_ack
ci2-upstream-kcsan-gce	2021/07/31 21:55	upstream	f3438b4c4e69	6c236867	.config	log	report	info	KCSAN: data-race in ps2_do_sendbyte / ps2_handle_ack
ci2-upstream-kcsan-gce	2021/07/30 22:55	upstream	4669e13cd67f	6c236867	.config	log	report	info	KCSAN: data-race in ps2_do_sendbyte / ps2_handle_ack
ci2-upstream-kcsan-gce	2021/07/13 23:03	upstream	40226a3d96ef	70168d5c	.config	log	report	info	KCSAN: data-race in ps2_do_sendbyte / ps2_handle_ack
ci2-upstream-kcsan-gce	2021/07/13 05:44	upstream	7fef2edf7cc7	f415556d	.config	log	report	info	KCSAN: data-race in ps2_do_sendbyte / ps2_handle_ack
ci2-upstream-kcsan-gce	2021/07/11 14:40	upstream	3dbdb38e2869	8f5a7b8c	.config	log	report	info	KCSAN: data-race in ps2_do_sendbyte / ps2_handle_ack
ci2-upstream-kcsan-gce	2021/07/01 13:30	upstream	dbe69e433722	658ebc66	.config	log	report	info	KCSAN: data-race in ps2_do_sendbyte / ps2_handle_ack
ci2-upstream-kcsan-gce	2021/06/28 02:06	upstream	b4b27b9eed8e	9d2ab5df	.config	log	report	info	KCSAN: data-race in ps2_do_sendbyte / ps2_handle_ack
ci2-upstream-kcsan-gce	2021/06/26 04:10	upstream	b7050b242430	ae6bf8dd	.config	log	report	info	KCSAN: data-race in ps2_do_sendbyte / ps2_handle_ack
ci2-upstream-kcsan-gce	2021/06/25 14:36	upstream	44db63d1ad8d	ae6bf8dd	.config	log	report	info	KCSAN: data-race in ps2_do_sendbyte / ps2_handle_ack
ci2-upstream-kcsan-gce	2021/06/25 10:32	upstream	44db63d1ad8d	0edbbe31	.config	log	report	info	KCSAN: data-race in ps2_do_sendbyte / ps2_handle_ack
ci2-upstream-kcsan-gce	2021/06/24 21:02	upstream	4a09d388f2ab	0edbbe31	.config	log	report	info	KCSAN: data-race in ps2_do_sendbyte / ps2_handle_ack
ci2-upstream-kcsan-gce	2021/06/24 07:46	upstream	7426cedc7dad	fe4ab389	.config	log	report	info	KCSAN: data-race in ps2_do_sendbyte / ps2_handle_ack
ci2-upstream-kcsan-gce	2021/06/23 17:29	upstream	7266f2030eb0	aba2b2fb	.config	log	report	info	KCSAN: data-race in ps2_do_sendbyte / ps2_handle_ack
ci2-upstream-kcsan-gce	2021/06/22 18:57	upstream	0c18f29aae7c	aba2b2fb	.config	log	report	info	KCSAN: data-race in ps2_do_sendbyte / ps2_handle_ack
ci2-upstream-kcsan-gce	2021/06/21 09:48	upstream	13311e74253f	aba2b2fb	.config	log	report	info	KCSAN: data-race in ps2_do_sendbyte / ps2_handle_ack
ci2-upstream-kcsan-gce	2021/06/20 18:32	upstream	cba5e97280f5	aba2b2fb	.config	log	report	info	KCSAN: data-race in ps2_do_sendbyte / ps2_handle_ack
ci2-upstream-kcsan-gce	2021/06/19 22:35	upstream	913ec3c22ef4	aba2b2fb	.config	log	report	info	KCSAN: data-race in ps2_do_sendbyte / ps2_handle_ack
ci2-upstream-kcsan-gce	2021/06/19 09:10	upstream	9ed13a17e38e	aba2b2fb	.config	log	report	info	KCSAN: data-race in ps2_do_sendbyte / ps2_handle_ack
ci2-upstream-kcsan-gce	2021/06/18 19:55	upstream	b1edae0d5f2e	aba2b2fb	.config	log	report	info	KCSAN: data-race in ps2_do_sendbyte / ps2_handle_ack
ci2-upstream-kcsan-gce	2021/06/18 01:14	upstream	fd0aa1a4567d	aba2b2fb	.config	log	report	info	KCSAN: data-race in ps2_do_sendbyte / ps2_handle_ack
ci2-upstream-kcsan-gce	2021/06/17 11:33	upstream	70585216fe77	aba2b2fb	.config	log	report	info	KCSAN: data-race in ps2_do_sendbyte / ps2_handle_ack
ci2-upstream-kcsan-gce	2021/06/16 21:51	upstream	6b00bc639f1f	aba2b2fb	.config	log	report	info	KCSAN: data-race in ps2_do_sendbyte / ps2_handle_ack
ci2-upstream-kcsan-gce	2021/01/03 16:01	upstream	3516bd729358	79264ae3	.config	log	report	info
ci2-upstream-kcsan-gce	2020/11/28 03:46	upstream	c84e1efae022	486f93ef	.config	log	report	info
ci2-upstream-kcsan-gce	2020/08/31 09:21	upstream	dcc5c6f013d8	d5a3ae1f	.config	log	report