KCSAN: data-race in __filemap_fdatawrite_range / xas_set

KCSAN: data-race in __filemap_fdatawrite_range / xas_set_mark
Status: moderation: reported on 2020/02/11 05:46
Reported-by: syzbot+14ebd1f92a9a64172cfe@syzkaller.appspotmail.com
First crash: 547d, last: 8d11h

Sample crash report:

==================================================================
BUG: KCSAN: data-race in __filemap_fdatawrite_range / xas_set_mark

write to 0xffff88810d89d304 of 4 bytes by task 17170 on cpu 1:
 xa_mark_set lib/xarray.c:69 [inline]
 xas_set_mark+0x13e/0x150 lib/xarray.c:889
 tag_pages_for_writeback+0x9d/0x290 mm/page-writeback.c:2124
 ext4_writepages+0x62f/0x1e70 fs/ext4/inode.c:2740
 do_writepages+0x7b/0x150 mm/page-writeback.c:2352
 __filemap_fdatawrite_range+0x19d/0x1d0 mm/filemap.c:424
 filemap_write_and_wait_range+0x8b/0x2a0 mm/filemap.c:657
 __iomap_dio_rw+0x40a/0xa30 fs/iomap/direct-io.c:525
 iomap_dio_rw+0x30/0x70 fs/iomap/direct-io.c:641
 ext4_dio_write_iter fs/ext4/file.c:551 [inline]
 ext4_file_write_iter+0xe5d/0x10b0 fs/ext4/file.c:661
 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: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

read to 0xffff88810d89d304 of 4 bytes by task 17178 on cpu 0:
 xa_marked include/linux/xarray.h:418 [inline]
 mapping_tagged include/linux/fs.h:490 [inline]
 __filemap_fdatawrite_range+0x11c/0x1d0 mm/filemap.c:420
 file_write_and_wait_range+0x9f/0x120 mm/filemap.c:763
 ext4_sync_file+0x105/0x6e0 fs/ext4/fsync.c:151
 vfs_fsync_range+0x107/0x120 fs/sync.c:200
 generic_write_sync include/linux/fs.h:2843 [inline]
 ext4_buffered_write_iter+0x38f/0x3e0 fs/ext4/file.c:277
 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

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 17178 Comm: syz-executor.2 Tainted: G        W         5.12.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
==================================================================

Crashes (630):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	VM info	Title
ci2-upstream-kcsan-gce	2021/04/14 23:48	upstream	7f75285c	fcdb12ba	.config	log	report	info	KCSAN: data-race in __filemap_fdatawrite_range / xas_set_mark
ci2-upstream-kcsan-gce	2021/04/14 10:51	upstream	50987bec	3134b37f	.config	log	report	info	KCSAN: data-race in __filemap_fdatawrite_range / xas_set_mark
ci2-upstream-kcsan-gce	2021/04/13 22:12	upstream	eebe426d	a184b83e	.config	log	report	info	KCSAN: data-race in __filemap_fdatawrite_range / xas_set_mark
ci2-upstream-kcsan-gce	2021/04/13 19:04	upstream	89698bec	a184b83e	.config	log	report	info	KCSAN: data-race in __filemap_fdatawrite_range / xas_set_mark
ci2-upstream-kcsan-gce	2021/04/12 22:41	upstream	89698bec	6a81331a	.config	log	report	info	KCSAN: data-race in __filemap_fdatawrite_range / xas_set_mark
ci2-upstream-kcsan-gce	2021/04/12 09:29	upstream	d434405a	6a81331a	.config	log	report	info	KCSAN: data-race in __filemap_fdatawrite_range / xas_set_mark
ci2-upstream-kcsan-gce	2021/04/11 19:52	upstream	7d900724	6a81331a	.config	log	report	info	KCSAN: data-race in __filemap_fdatawrite_range / xas_set_mark
ci2-upstream-kcsan-gce	2021/04/11 04:16	upstream	52e44129	6a81331a	.config	log	report	info	KCSAN: data-race in __filemap_fdatawrite_range / xas_set_mark
ci2-upstream-kcsan-gce	2021/04/10 15:04	upstream	d4961772	6a81331a	.config	log	report	info	KCSAN: data-race in __filemap_fdatawrite_range / xas_set_mark
ci2-upstream-kcsan-gce	2021/04/10 01:20	upstream	4e04e751	6a81331a	.config	log	report	info	KCSAN: data-race in __filemap_fdatawrite_range / xas_set_mark
ci2-upstream-kcsan-gce	2021/04/09 12:01	upstream	17e7124a	6a81331a	.config	log	report	info	KCSAN: data-race in __filemap_fdatawrite_range / xas_set_mark
ci2-upstream-kcsan-gce	2021/04/08 21:52	upstream	3fb4f979	6a81331a	.config	log	report	info	KCSAN: data-race in __filemap_fdatawrite_range / xas_set_mark
ci2-upstream-kcsan-gce	2021/04/07 19:41	upstream	3a229812	6a81331a	.config	log	report	info	KCSAN: data-race in __filemap_fdatawrite_range / xas_set_mark
ci2-upstream-kcsan-gce	2021/04/06 21:26	upstream	2d743660	6a81331a	.config	log	report	info	KCSAN: data-race in __filemap_fdatawrite_range / xas_set_mark
ci2-upstream-kcsan-gce	2021/04/05 18:59	upstream	0a50438c	6a81331a	.config	log	report	info	KCSAN: data-race in __filemap_fdatawrite_range / xas_set_mark
ci2-upstream-kcsan-gce	2021/04/04 22:13	upstream	e49d033b	6a81331a	.config	log	report	info	KCSAN: data-race in __filemap_fdatawrite_range / xas_set_mark
ci2-upstream-kcsan-gce	2021/04/04 04:22	upstream	2023a53b	6a81331a	.config	log	report	info	KCSAN: data-race in __filemap_fdatawrite_range / xas_set_mark
ci2-upstream-kcsan-gce	2021/04/04 02:42	upstream	d93a0d43	6a81331a	.config	log	report	info	KCSAN: data-race in __filemap_fdatawrite_range / xas_set_mark
ci2-upstream-kcsan-gce	2021/04/03 01:20	upstream	0a84c2e4	6a81331a	.config	log	report	info	KCSAN: data-race in __filemap_fdatawrite_range / xas_set_mark
ci2-upstream-kcsan-gce	2021/04/02 07:32	upstream	1678e493	6a81331a	.config	log	report	info	KCSAN: data-race in __filemap_fdatawrite_range / xas_set_mark
ci2-upstream-kcsan-gce	2021/04/02 05:53	upstream	ffd9fb54	6a81331a	.config	log	report	info	KCSAN: data-race in __filemap_fdatawrite_range / xas_set_mark
ci2-upstream-kcsan-gce	2021/03/31 19:47	upstream	d19cc4bf	6a81331a	.config	log	report	info	KCSAN: data-race in __filemap_fdatawrite_range / xas_set_mark
ci2-upstream-kcsan-gce	2021/03/31 09:22	upstream	5e46d1b7	6a81331a	.config	log	report	info	KCSAN: data-race in __filemap_fdatawrite_range / xas_set_mark
ci2-upstream-kcsan-gce	2021/03/30 17:53	upstream	2bb25b3a	6a81331a	.config	log	report	info	KCSAN: data-race in __filemap_fdatawrite_range / xas_set_mark
ci2-upstream-kcsan-gce	2021/03/29 21:43	upstream	1e43c377	6a81331a	.config	log	report	info	KCSAN: data-race in __filemap_fdatawrite_range / xas_set_mark
ci2-upstream-kcsan-gce	2021/03/29 11:24	upstream	a5e13c6d	a8529b82	.config	log	report	info	KCSAN: data-race in __filemap_fdatawrite_range / xas_set_mark
ci2-upstream-kcsan-gce	2021/03/28 23:02	upstream	36a14638	a8529b82	.config	log	report	info	KCSAN: data-race in __filemap_fdatawrite_range / xas_set_mark
ci2-upstream-kcsan-gce	2021/03/27 03:13	upstream	0f4498ce	a8529b82	.config	log	report	info	KCSAN: data-race in __filemap_fdatawrite_range / xas_set_mark
ci2-upstream-kcsan-gce	2021/03/26 11:52	upstream	db24726b	a8529b82	.config	log	report	info	KCSAN: data-race in __filemap_fdatawrite_range / xas_set_mark
ci2-upstream-kcsan-gce	2021/03/26 01:53	upstream	00232240	6a383ecf	.config	log	report	info	KCSAN: data-race in __filemap_fdatawrite_range / xas_set_mark
ci2-upstream-kcsan-gce	2021/03/25 09:04	upstream	e1381380	6a383ecf	.config	log	report	info	KCSAN: data-race in __filemap_fdatawrite_range / xas_set_mark
ci2-upstream-kcsan-gce	2021/03/24 20:43	upstream	4ee998b0	607e3baf	.config	log	report	info	KCSAN: data-race in __filemap_fdatawrite_range / xas_set_mark
ci2-upstream-kcsan-gce	2021/03/24 14:23	upstream	7acac4b3	607e3baf	.config	log	report	info	KCSAN: data-race in __filemap_fdatawrite_range / xas_set_mark
ci2-upstream-kcsan-gce	2021/03/23 18:39	upstream	7acac4b3	e613994b	.config	log	report	info	KCSAN: data-race in __filemap_fdatawrite_range / xas_set_mark
ci2-upstream-kcsan-gce	2021/03/23 15:39	upstream	84196390	e613994b	.config	log	report	info	KCSAN: data-race in __filemap_fdatawrite_range / xas_set_mark
ci2-upstream-kcsan-gce	2021/03/23 08:40	upstream	84196390	8092f30d	.config	log	report	info	KCSAN: data-race in __filemap_fdatawrite_range / xas_set_mark
ci2-upstream-kcsan-gce	2021/03/22 21:58	upstream	0d02ec6b	8092f30d	.config	log	report	info	KCSAN: data-race in __filemap_fdatawrite_range / xas_set_mark
ci2-upstream-kcsan-gce	2021/03/22 03:54	upstream	5ee96fa9	bea32f74	.config	log	report	info	KCSAN: data-race in __filemap_fdatawrite_range / xas_set_mark
ci2-upstream-kcsan-gce	2021/03/22 01:02	upstream	5ee96fa9	4c9a64da	.config	log	report	info	KCSAN: data-race in __filemap_fdatawrite_range / xas_set_mark
ci2-upstream-kcsan-gce	2021/03/21 14:45	upstream	812da4d3	4c9a64da	.config	log	report	info	KCSAN: data-race in __filemap_fdatawrite_range / xas_set_mark
ci2-upstream-kcsan-gce	2021/03/20 22:20	upstream	812da4d3	17810eae	.config	log	report	info	KCSAN: data-race in __filemap_fdatawrite_range / xas_set_mark
ci2-upstream-kcsan-gce	2021/03/20 12:27	upstream	1c273e10	e45f5621	.config	log	report	info	KCSAN: data-race in __filemap_fdatawrite_range / xas_set_mark
ci2-upstream-kcsan-gce	2021/03/19 21:40	upstream	8b12a62a	3d01c4de	.config	log	report	info	KCSAN: data-race in __filemap_fdatawrite_range / xas_set_mark
ci2-upstream-kcsan-gce	2021/03/19 10:34	upstream	8b12a62a	2af9d324	.config	log	report	info	KCSAN: data-race in __filemap_fdatawrite_range / xas_set_mark
ci2-upstream-kcsan-gce	2021/03/18 19:07	upstream	bf152b0b	7216542e	.config	log	report	info	KCSAN: data-race in __filemap_fdatawrite_range / xas_set_mark
ci2-upstream-kcsan-gce	2021/03/18 10:09	upstream	6417f031	7216542e	.config	log	report	info	KCSAN: data-race in __filemap_fdatawrite_range / xas_set_mark
ci2-upstream-kcsan-gce	2021/03/18 01:02	upstream	6417f031	fdb2bb2c	.config	log	report	info	KCSAN: data-race in __filemap_fdatawrite_range / xas_set_mark
ci2-upstream-kcsan-gce	2021/03/16 19:51	upstream	1df27313	fdb2bb2c	.config	log	report	info	KCSAN: data-race in __filemap_fdatawrite_range / xas_set_mark
ci2-upstream-kcsan-gce	2021/03/16 06:28	upstream	1a4431a5	fdb2bb2c	.config	log	report	info	KCSAN: data-race in __filemap_fdatawrite_range / xas_set_mark
ci2-upstream-kcsan-gce	2021/03/15 15:58	upstream	1e28eed1	fdb2bb2c	.config	log	report	info	KCSAN: data-race in __filemap_fdatawrite_range / xas_set_mark
ci2-upstream-kcsan-gce	2021/01/17 11:35	upstream	0da0a8a0	813be542	.config	log	report	info
ci2-upstream-kcsan-gce	2020/02/11 02:55	https://github.com/google/ktsan.git kcsan	f60f0f54	d9e55b05	.config	log	report
ci2-upstream-kcsan-gce	2020/02/07 05:32	https://github.com/google/ktsan.git kcsan	245a4300	06150bf1	.config	log	report
ci2-upstream-kcsan-gce	2019/10/24 09:45	https://github.com/google/ktsan.git kcsan	05f22368	d01bb02a	.config	log	report