KCSAN: data-race in blk_mq_free_request / blk_mq_free

KCSAN: data-race in blk_mq_free_request / blk_mq_free_request
Status: moderation: reported on 2020/03/02 02:13
Reported-by: syzbot+b9914ed52d5b1d63f71d@syzkaller.appspotmail.com
First crash: 765d, last: 29d

Sample crash report:

==================================================================
BUG: KCSAN: data-race in blk_mq_free_request / blk_mq_free_request

write to 0xffffe8ffffc15748 of 8 bytes by interrupt on cpu 0:
 blk_mq_free_request+0x17d/0x340 block/blk-mq.c:530
 __blk_mq_end_request+0x214/0x230 block/blk-mq.c:565
 blk_mq_end_request+0x37/0x50 block/blk-mq.c:574
 lo_complete_rq+0xca/0x170 drivers/block/loop.c:541
 blk_complete_reqs block/blk-mq.c:584 [inline]
 blk_done_softirq+0x69/0x90 block/blk-mq.c:589
 __do_softirq+0x12c/0x26e kernel/softirq.c:558
 run_ksoftirqd+0x13/0x20 kernel/softirq.c:920
 smpboot_thread_fn+0x22f/0x330 kernel/smpboot.c:164
 kthread+0x262/0x280 kernel/kthread.c:319
 ret_from_fork+0x1f/0x30

read to 0xffffe8ffffc15748 of 8 bytes by interrupt on cpu 1:
 blk_mq_free_request+0x16a/0x340 block/blk-mq.c:530
 __blk_mq_end_request+0x214/0x230 block/blk-mq.c:565
 blk_mq_end_request+0x37/0x50 block/blk-mq.c:574
 lo_complete_rq+0xca/0x170 drivers/block/loop.c:541
 blk_complete_reqs block/blk-mq.c:584 [inline]
 blk_done_softirq+0x69/0x90 block/blk-mq.c:589
 __do_softirq+0x12c/0x26e kernel/softirq.c:558
 run_ksoftirqd+0x13/0x20 kernel/softirq.c:920
 smpboot_thread_fn+0x22f/0x330 kernel/smpboot.c:164
 kthread+0x262/0x280 kernel/kthread.c:319
 ret_from_fork+0x1f/0x30

value changed: 0x00000000000a4519 -> 0x00000000000a451c

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 16 Comm: ksoftirqd/1 Not tainted 5.15.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
==================================================================
sd 0:0:1:0: tag#2026 FAILED Result: hostbyte=DID_ABORT driverbyte=DRIVER_OK cmd_age=0s
sd 0:0:1:0: tag#2026 CDB: opcode=0xe5 (vendor)
sd 0:0:1:0: tag#2026 CDB[00]: e5 f4 32 73 2f 4e 09 6d 26 e2 c7 35 d1 35 12 1c
sd 0:0:1:0: tag#2026 CDB[10]: 92 1b da 40 b8 58 5b a8 d4 7d 34 f3 90 4c f1 2d
sd 0:0:1:0: tag#2026 CDB[20]: ba
sd 0:0:1:0: tag#2027 FAILED Result: hostbyte=DID_ABORT driverbyte=DRIVER_OK cmd_age=0s
sd 0:0:1:0: tag#2027 CDB: opcode=0xe5 (vendor)
sd 0:0:1:0: tag#2027 CDB[00]: e5 f4 32 73 2f 4e 09 6d 26 e2 c7 35 d1 35 12 1c
sd 0:0:1:0: tag#2027 CDB[10]: 92 1b da 40 b8 58 5b a8 d4 7d 34 f3 90 4c f1 2d
sd 0:0:1:0: tag#2027 CDB[20]: ba
sd 0:0:1:0: tag#2036 FAILED Result: hostbyte=DID_ABORT driverbyte=DRIVER_OK cmd_age=0s
sd 0:0:1:0: tag#2036 CDB: opcode=0xe5 (vendor)
sd 0:0:1:0: tag#2036 CDB[00]: e5 f4 32 73 2f 4e 09 6d 26 e2 c7 35 d1 35 12 1c
sd 0:0:1:0: tag#2036 CDB[10]: 92 1b da 40 b8 58 5b a8 d4 7d 34 f3 90 4c f1 2d
sd 0:0:1:0: tag#2036 CDB[20]: ba
sd 0:0:1:0: tag#2037 FAILED Result: hostbyte=DID_ABORT driverbyte=DRIVER_OK cmd_age=0s
sd 0:0:1:0: tag#2037 CDB: opcode=0xe5 (vendor)
sd 0:0:1:0: tag#2037 CDB[00]: e5 f4 32 73 2f 4e 09 6d 26 e2 c7 35 d1 35 12 1c
sd 0:0:1:0: tag#2037 CDB[10]: 92 1b da 40 b8 58 5b a8 d4 7d 34 f3 90 4c f1 2d
sd 0:0:1:0: tag#2037 CDB[20]: ba
sd 0:0:1:0: tag#1987 FAILED Result: hostbyte=DID_ABORT driverbyte=DRIVER_OK cmd_age=0s
sd 0:0:1:0: tag#1987 CDB: opcode=0xe5 (vendor)
sd 0:0:1:0: tag#1987 CDB[00]: e5 f4 32 73 2f 4e 09 6d 26 e2 c7 35 d1 35 12 1c
sd 0:0:1:0: tag#1987 CDB[10]: 92 1b da 40 b8 58 5b a8 d4 7d 34 f3 90 4c f1 2d
sd 0:0:1:0: tag#1987 CDB[20]: ba

Crashes (118):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	VM info	Title
ci2-upstream-kcsan-gce	2021/10/29 16:48	upstream	f25a5481af12	2353a3ec	.config	log	report	info	KCSAN: data-race in blk_mq_free_request / blk_mq_free_request
ci2-upstream-kcsan-gce	2021/10/23 21:34	upstream	9c0c4d24ac00	282f03fb	.config	log	report	info	KCSAN: data-race in blk_mq_free_request / blk_mq_free_request
ci2-upstream-kcsan-gce	2021/10/21 15:35	upstream	2f111a6fd5b5	c5cb7da8	.config	log	report	info	KCSAN: data-race in blk_mq_free_request / blk_mq_free_request
ci2-upstream-kcsan-gce	2021/10/21 04:43	upstream	2f111a6fd5b5	f111d03b	.config	log	report	info	KCSAN: data-race in blk_mq_free_request / blk_mq_free_request
ci2-upstream-kcsan-gce	2021/10/19 17:14	upstream	d9abdee5fd5a	466b7db1	.config	log	report	info	KCSAN: data-race in blk_mq_free_request / blk_mq_free_request
ci2-upstream-kcsan-gce	2021/10/13 16:16	upstream	f4d0cc426f77	9d56e7dd	.config	log	report	info	KCSAN: data-race in blk_mq_free_request / blk_mq_free_request
ci2-upstream-kcsan-gce	2021/10/05 12:55	upstream	f6274b06e326	8a6b1a8d	.config	log	report	info	KCSAN: data-race in blk_mq_free_request / blk_mq_free_request
ci2-upstream-kcsan-gce	2021/09/26 17:07	upstream	a3b397b4fffb	8cac236e	.config	log	report	info	KCSAN: data-race in blk_mq_free_request / blk_mq_free_request
ci2-upstream-kcsan-gce	2021/09/21 06:55	upstream	e8f71f89236e	af796c18	.config	log	report	info	KCSAN: data-race in blk_mq_free_request / blk_mq_free_request
ci2-upstream-kcsan-gce	2021/09/17 09:34	upstream	bdb575f87217	5b989942	.config	log	report	info	KCSAN: data-race in blk_mq_free_request / blk_mq_free_request
ci2-upstream-kcsan-gce	2021/09/16 18:45	upstream	ff1ffd71d5f0	aae492f2	.config	log	report	info	KCSAN: data-race in blk_mq_free_request / blk_mq_free_request
ci2-upstream-kcsan-gce	2021/09/16 13:13	upstream	ff1ffd71d5f0	07e953c1	.config	log	report	info	KCSAN: data-race in blk_mq_free_request / blk_mq_free_request
ci2-upstream-kcsan-gce	2021/09/12 02:49	upstream	c605c39677b9	3ce60af8	.config	log	report	info	KCSAN: data-race in blk_mq_free_request / blk_mq_free_request
ci2-upstream-kcsan-gce	2021/09/10 00:17	upstream	a3fa7a101dcf	e2776ee4	.config	log	report	info	KCSAN: data-race in blk_mq_free_request / blk_mq_free_request
ci2-upstream-kcsan-gce	2021/08/22 01:39	upstream	002c0aef1090	b599f2fc	.config	log	report	info	KCSAN: data-race in blk_mq_free_request / blk_mq_free_request
ci2-upstream-kcsan-gce	2021/08/15 03:29	upstream	ba31f97d43be	2489ab88	.config	log	report	info	KCSAN: data-race in blk_mq_free_request / blk_mq_free_request
ci2-upstream-kcsan-gce	2021/08/07 20:21	upstream	c9194f32bfd9	6972b106	.config	log	report	info	KCSAN: data-race in blk_mq_free_request / blk_mq_free_request
ci2-upstream-kcsan-gce	2021/07/28 20:33	upstream	4010a528219e	9a4781d4	.config	log	report	info	KCSAN: data-race in blk_mq_free_request / blk_mq_free_request
ci2-upstream-kcsan-gce	2021/07/22 22:55	upstream	3d5895cd3517	241790bb	.config	log	report	info	KCSAN: data-race in blk_mq_free_request / blk_mq_free_request
ci2-upstream-kcsan-gce	2021/07/20 07:02	upstream	2734d6c1b1a0	bc48c9ab	.config	log	report	info	KCSAN: data-race in blk_mq_free_request / blk_mq_free_request
ci2-upstream-kcsan-gce	2021/06/21 20:36	upstream	13311e74253f	aba2b2fb	.config	log	report	info	KCSAN: data-race in blk_mq_free_request / blk_mq_free_request
ci2-upstream-kcsan-gce	2021/05/29 12:40	upstream	6799d4f2da49	858ea628	.config	log	report	info	KCSAN: data-race in blk_mq_free_request / blk_mq_free_request
ci2-upstream-kcsan-gce	2021/05/13 06:54	upstream	dbb5afad100a	ed7d41c5	.config	log	report	info	KCSAN: data-race in blk_mq_free_request / blk_mq_free_request
ci2-upstream-kcsan-gce	2021/05/08 17:50	upstream	dd860052c99b	bc5434be	.config	log	report	info	KCSAN: data-race in blk_mq_free_request / blk_mq_free_request
ci2-upstream-kcsan-gce	2021/05/07 05:19	upstream	e48661230cc3	06585184	.config	log	report	info	KCSAN: data-race in blk_mq_free_request / blk_mq_free_request
ci2-upstream-kcsan-gce	2021/05/06 23:42	upstream	8404c9fbc84b	06585184	.config	log	report	info	KCSAN: data-race in blk_mq_free_request / blk_mq_free_request
ci2-upstream-kcsan-gce	2021/04/30 21:11	upstream	65c61de9d090	77e2b668	.config	log	report	info	KCSAN: data-race in blk_mq_free_request / blk_mq_free_request
ci2-upstream-kcsan-gce	2021/04/30 01:14	upstream	8ca5297e7e38	77e2b668	.config	log	report	info	KCSAN: data-race in blk_mq_free_request / blk_mq_free_request
ci2-upstream-kcsan-gce	2021/04/29 22:41	upstream	d72cd4ad4174	77e2b668	.config	log	report	info	KCSAN: data-race in blk_mq_free_request / blk_mq_free_request
ci2-upstream-kcsan-gce	2021/04/21 07:47	upstream	1fe5501ba1ab	c0ced557	.config	log	report	info	KCSAN: data-race in blk_mq_free_request / blk_mq_free_request
ci2-upstream-kcsan-gce	2021/04/04 20:14	upstream	2023a53bdf41	6a81331a	.config	log	report	info	KCSAN: data-race in blk_mq_free_request / blk_mq_free_request
ci2-upstream-kcsan-gce	2021/03/13 11:14	upstream	f296bfd5cd04	4a003785	.config	log	report	info	KCSAN: data-race in blk_mq_free_request / blk_mq_free_request
ci2-upstream-kcsan-gce	2021/03/13 02:15	upstream	f296bfd5cd04	429d8a6b	.config	log	report	info	KCSAN: data-race in blk_mq_free_request / blk_mq_free_request
ci2-upstream-kcsan-gce	2021/02/15 06:46	upstream	f40ddce88593	98682e5e	.config	log	report	info	KCSAN: data-race in blk_mq_free_request / blk_mq_free_request
ci2-upstream-kcsan-gce	2021/02/11 21:50	upstream	291009f656e8	a5f86b15	.config	log	report	info	KCSAN: data-race in blk_mq_free_request / blk_mq_free_request
ci2-upstream-kcsan-gce	2021/02/07 17:04	upstream	825b5991a46e	2ce644fc	.config	log	report	info	KCSAN: data-race in blk_mq_free_request / blk_mq_free_request
ci2-upstream-kcsan-gce	2021/01/28 23:04	upstream	e5ff2cb9cf67	7df34f59	.config	log	report	info	KCSAN: data-race in blk_mq_free_request / blk_mq_free_request
ci2-upstream-kcsan-gce	2021/01/26 14:14	upstream	13391c60da33	52e37319	.config	log	report	info	KCSAN: data-race in blk_mq_free_request / blk_mq_free_request
ci2-upstream-kcsan-gce	2021/01/22 15:57	upstream	83d09ad4b950	d4f4eca5	.config	log	report	info	KCSAN: data-race in blk_mq_free_request / blk_mq_free_request
ci2-upstream-kcsan-gce	2021/01/11 20:04	upstream	7c53f6b671f4	2c1f2513	.config	log	report	info
ci2-upstream-kcsan-gce	2021/01/08 21:57	upstream	6279d812eab6	c104d4a3	.config	log	report	info
ci2-upstream-kcsan-gce	2021/01/03 01:46	upstream	3516bd729358	79264ae3	.config	log	report	info
ci2-upstream-kcsan-gce	2020/12/31 05:55	upstream	f6e1ea196492	5cc121d6	.config	log	report	info
ci2-upstream-kcsan-gce	2020/12/25 12:45	upstream	71c5f03154ac	b982b3ea	.config	log	report	info
ci2-upstream-kcsan-gce	2020/12/24 16:57	upstream	58cf05f597b0	c2c1d1dd	.config	log	report	info
ci2-upstream-kcsan-gce	2020/12/22 01:53	upstream	8653b778e454	04201c06	.config	log	report	info
ci2-upstream-kcsan-gce	2020/12/18 11:17	upstream	d64c6f96ba86	04201c06	.config	log	report	info
ci2-upstream-kcsan-gce	2020/12/15 20:31	upstream	148842c98a24	f213e07e	.config	log	report	info
ci2-upstream-kcsan-gce	2020/12/14 19:04	upstream	2c85ebc57b3e	97183ed7	.config	log	report	info
ci2-upstream-kcsan-gce	2020/11/23 07:20	upstream	68d3fa235fd8	0d27f508	.config	log	report	info
ci2-upstream-kcsan-gce	2020/02/27 02:03	https://github.com/google/ktsan.git kcsan	766d004d1b85	251aabb7	.config	log	report
ci2-upstream-kcsan-gce	2019/10/24 17:24	https://github.com/google/ktsan.git kcsan	05f2236801fe	d01bb02a	.config	log	report