KCSAN: data-race in __mark_inode_dirty / __mark_inode

KCSAN: data-race in __mark_inode_dirty / __mark_inode_dirty (3)
Status: moderation: reported on 2020/12/07 11:24
Reported-by: syzbot+1580cfa2f85484a8f5b7@syzkaller.appspotmail.com
First crash: 287d, last: 9h03m

similar bugs (2):
Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
upstream	KCSAN: data-race in __mark_inode_dirty / __mark_inode_dirty				3	529d	540d	0/22	closed as invalid on 2019/11/19 13:24
upstream	KCSAN: data-race in __mark_inode_dirty / __mark_inode_dirty (2)				19	301d	505d	0/22	closed as invalid on 2020/06/18 14:24

Sample crash report:

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

write to 0xffff88810eb41c98 of 8 bytes by task 5009 on cpu 1:
 __mark_inode_dirty+0x237/0x6f0 fs/fs-writeback.c:2313
 mark_buffer_dirty+0x143/0x230 fs/buffer.c:1141
 __block_commit_write fs/buffer.c:2084 [inline]
 block_write_end+0x13d/0x260 fs/buffer.c:2163
 generic_write_end+0x5c/0x240 fs/buffer.c:2177
 ext4_da_write_end+0x59b/0x760 fs/ext4/inode.c:3112
 generic_perform_write+0x23e/0x3a0 mm/filemap.c:3586
 ext4_buffered_write_iter+0x2e5/0x3e0 fs/ext4/file.c:269
 ext4_file_write_iter+0x48a/0x10b0 fs/ext4/file.c:502
 call_write_iter include/linux/fs.h:1977 [inline]
 do_iter_readv_writev+0x2cb/0x360 fs/read_write.c:740
 do_iter_write+0x112/0x4c0 fs/read_write.c:866
 vfs_iter_write+0x4c/0x70 fs/read_write.c:907
 iter_file_splice_write+0x40a/0x750 fs/splice.c:689
 do_splice_from fs/splice.c:767 [inline]
 direct_splice_actor+0x80/0xa0 fs/splice.c:936
 splice_direct_to_actor+0x345/0x650 fs/splice.c:891
 do_splice_direct+0xf5/0x170 fs/splice.c:979
 do_sendfile+0x7a6/0xe20 fs/read_write.c:1260
 __do_sys_sendfile64 fs/read_write.c:1319 [inline]
 __se_sys_sendfile64 fs/read_write.c:1311 [inline]
 __x64_sys_sendfile64+0xa9/0x130 fs/read_write.c:1311
 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xae

read to 0xffff88810eb41c98 of 8 bytes by task 5004 on cpu 0:
 __mark_inode_dirty+0x35f/0x6f0 fs/fs-writeback.c:2350
 generic_update_time fs/inode.c:1766 [inline]
 update_time fs/inode.c:1779 [inline]
 touch_atime+0x1b3/0x2d0 fs/inode.c:1850
 file_accessed include/linux/fs.h:2319 [inline]
 filemap_read+0x74f/0x7b0 mm/filemap.c:2530
 generic_file_read_iter+0x82/0x410 mm/filemap.c:2609
 ext4_file_read_iter+0x2e0/0x420 fs/ext4/file.c:74
 call_read_iter include/linux/fs.h:1971 [inline]
 generic_file_splice_read+0x22a/0x310 fs/splice.c:311
 do_splice_to fs/splice.c:796 [inline]
 splice_direct_to_actor+0x2aa/0x650 fs/splice.c:870
 do_splice_direct+0xf5/0x170 fs/splice.c:979
 do_sendfile+0x7a6/0xe20 fs/read_write.c:1260
 __do_sys_sendfile64 fs/read_write.c:1325 [inline]
 __se_sys_sendfile64 fs/read_write.c:1311 [inline]
 __x64_sys_sendfile64+0xf2/0x130 fs/read_write.c:1311
 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xae

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 5004 Comm: syz-executor.4 Not tainted 5.12.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
==================================================================

Crashes (94):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	VM info	Title
ci2-upstream-kcsan-gce	2021/04/14 23:05	upstream	7f75285c	fcdb12ba	.config	log	report	info	KCSAN: data-race in __mark_inode_dirty / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/04/14 00:05	upstream	eebe426d	a184b83e	.config	log	report	info	KCSAN: data-race in __mark_inode_dirty / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/04/12 12:20	upstream	d434405a	6a81331a	.config	log	report	info	KCSAN: data-race in __mark_inode_dirty / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/04/08 09:35	upstream	454859c5	6a81331a	.config	log	report	info	KCSAN: data-race in __mark_inode_dirty / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/04/06 22:04	upstream	2d743660	6a81331a	.config	log	report	info	KCSAN: data-race in __mark_inode_dirty / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/04/04 03:02	upstream	2023a53b	6a81331a	.config	log	report	info	KCSAN: data-race in __mark_inode_dirty / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/04/03 13:34	upstream	d93a0d43	6a81331a	.config	log	report	info	KCSAN: data-race in __mark_inode_dirty / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/03/31 20:15	upstream	d19cc4bf	6a81331a	.config	log	report	info	KCSAN: data-race in __mark_inode_dirty / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/03/24 14:47	upstream	7acac4b3	607e3baf	.config	log	report	info	KCSAN: data-race in __mark_inode_dirty / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/03/22 21:11	upstream	0d02ec6b	8092f30d	.config	log	report	info	KCSAN: data-race in __mark_inode_dirty / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/03/22 03:13	upstream	5ee96fa9	bea32f74	.config	log	report	info	KCSAN: data-race in __mark_inode_dirty / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/03/15 15:01	upstream	1e28eed1	fdb2bb2c	.config	log	report	info	KCSAN: data-race in __mark_inode_dirty / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/03/11 06:17	upstream	a74e6a01	c2ca1f2a	.config	log	report	info	KCSAN: data-race in __mark_inode_dirty / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/03/10 19:41	upstream	05a59d79	764067f3	.config	log	report	info	KCSAN: data-race in __mark_inode_dirty / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/03/10 06:05	upstream	05a59d79	26967e35	.config	log	report	info	KCSAN: data-race in __mark_inode_dirty / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/02/22 18:39	upstream	31caf8b2	c26fb06b	.config	log	report	info	KCSAN: data-race in __mark_inode_dirty / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/02/22 09:14	upstream	31caf8b2	a659b3f1	.config	log	report	info	KCSAN: data-race in __mark_inode_dirty / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/02/13 12:15	upstream	c6d8570e	98682e5e	.config	log	report	info	KCSAN: data-race in __mark_inode_dirty / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/02/13 00:58	upstream	dcc0b490	98682e5e	.config	log	report	info	KCSAN: data-race in __mark_inode_dirty / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/02/04 11:27	upstream	61556703	42b90a7c	.config	log	report	info	KCSAN: data-race in __mark_inode_dirty / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/02/02 09:29	upstream	88bb507a	19e09687	.config	log	report	info	KCSAN: data-race in __mark_inode_dirty / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/02/01 03:01	upstream	1048ba83	fc9fd31e	.config	log	report	info	KCSAN: data-race in __mark_inode_dirty / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/01/28 22:39	upstream	e5ff2cb9	7df34f59	.config	log	report	info	KCSAN: data-race in __mark_inode_dirty / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/01/28 11:22	upstream	76c057c8	eefc07f2	.config	log	report	info	KCSAN: data-race in __mark_inode_dirty / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/01/27 19:59	upstream	76c057c8	a57db36f	.config	log	report	info	KCSAN: data-race in __mark_inode_dirty / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/01/27 07:40	upstream	2ab38c17	a0ebf917	.config	log	report	info	KCSAN: data-race in __mark_inode_dirty / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/01/26 13:07	upstream	13391c60	52e37319	.config	log	report	info	KCSAN: data-race in __mark_inode_dirty / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/01/25 23:02	upstream	f8ad8187	52e37319	.config	log	report	info	KCSAN: data-race in __mark_inode_dirty / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/01/25 08:40	upstream	6ee1d745	52e37319	.config	log	report	info	KCSAN: data-race in __mark_inode_dirty / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/01/22 04:14	upstream	83d09ad4	d4f4eca5	.config	log	report	info	KCSAN: data-race in __mark_inode_dirty / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/01/21 00:10	upstream	75439bc4	d4f4eca5	.config	log	report	info	KCSAN: data-race in __mark_inode_dirty / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/01/20 05:28	upstream	45dfb8a5	63631df1	.config	log	report	info	KCSAN: data-race in __mark_inode_dirty / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/01/18 05:07	upstream	19c329f6	fd103621	.config	log	report	info	KCSAN: data-race in __mark_inode_dirty / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/01/17 15:50	upstream	0da0a8a0	fd103621	.config	log	report	info	KCSAN: data-race in __mark_inode_dirty / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/01/16 21:24	upstream	54c6247d	65a7a854	.config	log	report	info
ci2-upstream-kcsan-gce	2021/01/12 00:12	upstream	a0d54b4f	2c1f2513	.config	log	report	info
ci2-upstream-kcsan-gce	2021/01/07 21:49	upstream	f5e6c330	c104d4a3	.config	log	report	info
ci2-upstream-kcsan-gce	2021/01/07 02:22	upstream	71c061d2	c104d4a3	.config	log	report	info
ci2-upstream-kcsan-gce	2021/01/06 12:37	upstream	9f1abbe9	fff20c29	.config	log	report	info
ci2-upstream-kcsan-gce	2021/01/06 00:20	upstream	6207214a	b1c228e1	.config	log	report	info
ci2-upstream-kcsan-gce	2021/01/04 03:48	upstream	e71ba945	79264ae3	.config	log	report	info
ci2-upstream-kcsan-gce	2020/12/30 22:18	upstream	f6e1ea19	ecb8c012	.config	log	report	info
ci2-upstream-kcsan-gce	2020/12/28 22:11	upstream	c76e02c5	8259d56c	.config	log	report	info
ci2-upstream-kcsan-gce	2020/12/25 23:36	upstream	5814bc2d	821e0b09	.config	log	report	info
ci2-upstream-kcsan-gce	2020/12/24 00:04	upstream	58cf05f5	c2c1d1dd	.config	log	report	info
ci2-upstream-kcsan-gce	2020/12/19 23:00	upstream	467f8165	04201c06	.config	log	report	info
ci2-upstream-kcsan-gce	2020/12/04 21:21	upstream	e87297fa	20366b87	.config	log	report	info
ci2-upstream-kcsan-gce	2020/07/14 05:56	upstream	0dc589da	ce4c95b3	.config	log	report
ci2-upstream-kcsan-gce	2020/07/12 20:31	upstream	9901a6bd	9ebcc5b1	.config	log	report
ci2-upstream-kcsan-gce	2020/07/06 03:11	upstream	45a5ac7a	22f87567	.config	log	report
ci2-upstream-kcsan-gce	2020/07/01 11:19	upstream	7c30b859	090d8f7b	.config	log	report