KCSAN: data-race in __mark_inode_dirty / __writeback_single

KCSAN: data-race in __mark_inode_dirty / __writeback_single_inode (2)
Status: moderation: reported on 2020/10/14 12:01
Reported-by: syzbot+dd7eafdc93343dca0f7d@syzkaller.appspotmail.com
First crash: 320d, last: 7d06h

similar bugs (1):
Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
upstream	KCSAN: data-race in __mark_inode_dirty / __writeback_single_inode				43	348d	555d	0/22	closed as invalid on 2020/06/18 14:24

Sample crash report:

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

write to 0xffff888105ea8b88 of 8 bytes by task 10719 on cpu 0:
 __writeback_single_inode+0x1e9/0x450 fs/fs-writeback.c:1503
 writeback_single_inode+0x177/0x590 fs/fs-writeback.c:1580
 sync_inode fs/fs-writeback.c:2624 [inline]
 sync_inode_metadata+0x57/0x80 fs/fs-writeback.c:2644
 ext4_fsync_nojournal fs/ext4/fsync.c:92 [inline]
 ext4_sync_file+0x359/0x670 fs/ext4/fsync.c:170
 vfs_fsync_range+0x107/0x120 fs/sync.c:200
 generic_write_sync include/linux/fs.h:2984 [inline]
 ext4_buffered_write_iter+0x39c/0x3f0 fs/ext4/file.c:277
 ext4_file_write_iter+0x2e7/0x11d0 fs/ext4/file.c:519
 call_write_iter include/linux/fs.h:2116 [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+0x773/0xda0 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+0x4a/0x90 arch/x86/entry/common.c:47
 entry_SYSCALL_64_after_hwframe+0x44/0xae

read to 0xffff888105ea8b88 of 8 bytes by task 10707 on cpu 1:
 __mark_inode_dirty+0xda/0x6c0 fs/fs-writeback.c:2295
 mark_inode_dirty include/linux/fs.h:2406 [inline]
 generic_write_end+0x157/0x180 fs/buffer.c:2199
 ext4_da_write_end+0x59b/0x730 fs/ext4/inode.c:3110
 generic_perform_write+0x23e/0x3a0 mm/filemap.c:3687
 ext4_buffered_write_iter+0x2f2/0x3f0 fs/ext4/file.c:269
 ext4_file_write_iter+0x2e7/0x11d0 fs/ext4/file.c:519
 call_write_iter include/linux/fs.h:2116 [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+0x773/0xda0 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+0x4a/0x90 arch/x86/entry/common.c:47
 entry_SYSCALL_64_after_hwframe+0x44/0xae

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 10707 Comm: syz-executor.1 Not tainted 5.12.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
==================================================================

Crashes (104):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	VM info	Title
ci2-upstream-kcsan-gce	2021/05/03 13:22	upstream	9ccce092	ad61f371	.config	log	report	info	KCSAN: data-race in __mark_inode_dirty / __writeback_single_inode
ci2-upstream-kcsan-gce	2021/04/30 20:08	upstream	65c61de9	77e2b668	.config	log	report	info	KCSAN: data-race in __mark_inode_dirty / __writeback_single_inode
ci2-upstream-kcsan-gce	2021/04/23 12:41	upstream	18a3c5f7	17f0b706	.config	log	report	info	KCSAN: data-race in __mark_inode_dirty / __writeback_single_inode
ci2-upstream-kcsan-gce	2021/04/23 00:14	upstream	90c911ad	590921a5	.config	log	report	info	KCSAN: data-race in __mark_inode_dirty / __writeback_single_inode
ci2-upstream-kcsan-gce	2021/04/22 23:10	upstream	90c911ad	33c28d03	.config	log	report	info	KCSAN: data-race in __mark_inode_dirty / __writeback_single_inode
ci2-upstream-kcsan-gce	2021/04/17 20:42	upstream	194cf482	7e2b734b	.config	log	report	info	KCSAN: data-race in __mark_inode_dirty / __writeback_single_inode
ci2-upstream-kcsan-gce	2021/04/17 08:08	upstream	9cdbf646	7e2b734b	.config	log	report	info	KCSAN: data-race in __mark_inode_dirty / __writeback_single_inode
ci2-upstream-kcsan-gce	2021/04/13 19:42	upstream	89698bec	a184b83e	.config	log	report	info	KCSAN: data-race in __mark_inode_dirty / __writeback_single_inode
ci2-upstream-kcsan-gce	2021/04/12 23:04	upstream	89698bec	6a81331a	.config	log	report	info	KCSAN: data-race in __mark_inode_dirty / __writeback_single_inode
ci2-upstream-kcsan-gce	2021/04/11 04:05	upstream	52e44129	6a81331a	.config	log	report	info	KCSAN: data-race in __mark_inode_dirty / __writeback_single_inode
ci2-upstream-kcsan-gce	2021/03/31 07:42	upstream	5e46d1b7	6a81331a	.config	log	report	info	KCSAN: data-race in __mark_inode_dirty / __writeback_single_inode
ci2-upstream-kcsan-gce	2021/03/25 10:33	upstream	e1381380	6a383ecf	.config	log	report	info	KCSAN: data-race in __mark_inode_dirty / __writeback_single_inode
ci2-upstream-kcsan-gce	2021/03/23 15:36	upstream	84196390	e613994b	.config	log	report	info	KCSAN: data-race in __mark_inode_dirty / __writeback_single_inode
ci2-upstream-kcsan-gce	2021/03/23 09:15	upstream	84196390	8092f30d	.config	log	report	info	KCSAN: data-race in __mark_inode_dirty / __writeback_single_inode
ci2-upstream-kcsan-gce	2021/03/21 16:25	upstream	812da4d3	4c9a64da	.config	log	report	info	KCSAN: data-race in __mark_inode_dirty / __writeback_single_inode
ci2-upstream-kcsan-gce	2021/03/19 21:33	upstream	8b12a62a	3d01c4de	.config	log	report	info	KCSAN: data-race in __mark_inode_dirty / __writeback_single_inode
ci2-upstream-kcsan-gce	2021/03/12 00:10	upstream	28806e4d	429d8a6b	.config	log	report	info	KCSAN: data-race in __mark_inode_dirty / __writeback_single_inode
ci2-upstream-kcsan-gce	2021/03/07 11:41	upstream	a38fd874	c599ed12	.config	log	report	info	KCSAN: data-race in __mark_inode_dirty / __writeback_single_inode
ci2-upstream-kcsan-gce	2021/02/21 19:51	upstream	55f62bc8	a659b3f1	.config	log	report	info	KCSAN: data-race in __mark_inode_dirty / __writeback_single_inode
ci2-upstream-kcsan-gce	2021/02/17 08:00	upstream	f40ddce8	052f8d9f	.config	log	report	info	KCSAN: data-race in __mark_inode_dirty / __writeback_single_inode
ci2-upstream-kcsan-gce	2021/02/14 13:53	upstream	358fecee	98682e5e	.config	log	report	info	KCSAN: data-race in __mark_inode_dirty / __writeback_single_inode
ci2-upstream-kcsan-gce	2021/02/11 18:42	upstream	291009f6	a5f86b15	.config	log	report	info	KCSAN: data-race in __mark_inode_dirty / __writeback_single_inode
ci2-upstream-kcsan-gce	2021/02/10 09:39	upstream	e0756cfc	9c8b8541	.config	log	report	info	KCSAN: data-race in __mark_inode_dirty / __writeback_single_inode
ci2-upstream-kcsan-gce	2021/02/08 14:12	upstream	92bf2261	2ce644fc	.config	log	report	info	KCSAN: data-race in __mark_inode_dirty / __writeback_single_inode
ci2-upstream-kcsan-gce	2021/02/07 22:30	upstream	b75dba7f	2ce644fc	.config	log	report	info	KCSAN: data-race in __mark_inode_dirty / __writeback_single_inode
ci2-upstream-kcsan-gce	2021/02/03 00:22	upstream	3aaf0a27	624dad51	.config	log	report	info	KCSAN: data-race in __mark_inode_dirty / __writeback_single_inode
ci2-upstream-kcsan-gce	2021/02/01 21:34	upstream	88bb507a	e6b95f32	.config	log	report	info	KCSAN: data-race in __mark_inode_dirty / __writeback_single_inode
ci2-upstream-kcsan-gce	2021/01/29 19:21	upstream	bec4c296	fc9fd31e	.config	log	report	info	KCSAN: data-race in __mark_inode_dirty / __writeback_single_inode
ci2-upstream-kcsan-gce	2021/01/24 01:05	upstream	e1ae4b0b	52e37319	.config	log	report	info	KCSAN: data-race in __mark_inode_dirty / __writeback_single_inode
ci2-upstream-kcsan-gce	2021/01/23 10:03	upstream	fe75a218	52e37319	.config	log	report	info	KCSAN: data-race in __mark_inode_dirty / __writeback_single_inode
ci2-upstream-kcsan-gce	2021/01/02 22:07	upstream	3516bd72	79264ae3	.config	log	report	info
ci2-upstream-kcsan-gce	2020/12/14 21:46	upstream	fab0fca1	97183ed7	.config	log	report	info
ci2-upstream-kcsan-gce	2020/12/11 00:02	upstream	9fca90cf	f900b48c	.config	log	report	info
ci2-upstream-kcsan-gce	2020/12/10 16:18	upstream	a2f5ea9e	2a55c22b	.config	log	report	info
ci2-upstream-kcsan-gce	2020/12/02 23:07	upstream	3bb61aa6	eff43e99	.config	log	report	info
ci2-upstream-kcsan-gce	2020/12/02 01:02	upstream	509a1542	c42a35e9	.config	log	report	info
ci2-upstream-kcsan-gce	2020/11/29 01:30	upstream	67f34fa8	a0092f9d	.config	log	report	info
ci2-upstream-kcsan-gce	2020/11/28 12:40	upstream	c84e1efa	3c7136c0	.config	log	report	info
ci2-upstream-kcsan-gce	2020/11/28 03:23	upstream	c84e1efa	486f93ef	.config	log	report	info
ci2-upstream-kcsan-gce	2020/11/26 19:17	upstream	4df91062	2f1cec62	.config	log	report	info
ci2-upstream-kcsan-gce	2020/11/26 11:52	upstream	fa02fcd9	2f1cec62	.config	log	report	info
ci2-upstream-kcsan-gce	2020/11/21 10:59	upstream	27bba9c5	c7ec2d19	.config	log	report	info
ci2-upstream-kcsan-gce	2020/11/20 16:52	upstream	4d02da97	68068804	.config	log	report	info
ci2-upstream-kcsan-gce	2020/11/18 22:54	upstream	c2e7554e	0767f13f	.config	log	report	info
ci2-upstream-kcsan-gce	2020/11/15 20:51	upstream	0062442e	1bf9a662	.config	log	report	info
ci2-upstream-kcsan-gce	2020/11/15 05:52	upstream	e28c0d7c	1bf9a662	.config	log	report	info
ci2-upstream-kcsan-gce	2020/10/13 22:55	upstream	6ad4bf6e	fc7735a2	.config	log	report	info
ci2-upstream-kcsan-gce	2020/06/24 10:34	upstream	3e08a952	41694dbf	.config	log	report