KCSAN: data-race in __ext4_update_other_inode_time / __mark_inode

KCSAN: data-race in __ext4_update_other_inode_time / __mark_inode_dirty
Status: auto-closed as invalid on 2022/01/20 14:13
Reported-by: syzbot+b21fe66a80c277eb3330@syzkaller.appspotmail.com
First crash: 585d, last: 41d

Sample crash report:

==================================================================
BUG: KCSAN: data-race in __ext4_update_other_inode_time / __mark_inode_dirty

write to 0xffff8881318d2230 of 8 bytes by task 1826 on cpu 0:
 __mark_inode_dirty+0x1bc/0x6c0 fs/fs-writeback.c:2434
 mark_inode_dirty include/linux/fs.h:2451 [inline]
 dquot_alloc_space include/linux/quotaops.h:317 [inline]
 dquot_alloc_block include/linux/quotaops.h:334 [inline]
 ext4_mb_new_blocks+0x1135/0x1ee0 fs/ext4/mballoc.c:5548
 ext4_ext_map_blocks+0x1658/0x2120 fs/ext4/extents.c:4285
 ext4_map_blocks+0x71e/0xf00 fs/ext4/inode.c:637
 ext4_getblk+0xc6/0x3e0 fs/ext4/inode.c:847
 ext4_bread+0x28/0x100 fs/ext4/inode.c:900
 ext4_append+0xd1/0x1c0 fs/ext4/namei.c:67
 ext4_init_new_dir+0x177/0x500 fs/ext4/namei.c:2893
 ext4_mkdir+0x329/0x760 fs/ext4/namei.c:2939
 vfs_mkdir+0x2c8/0x3d0 fs/namei.c:3883
 do_mkdirat+0x12e/0x2c0 fs/namei.c:3909
 __do_sys_mkdir fs/namei.c:3929 [inline]
 __se_sys_mkdir fs/namei.c:3927 [inline]
 __x64_sys_mkdir+0x40/0x50 fs/namei.c:3927
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae

read to 0xffff8881318d2230 of 8 bytes by task 9116 on cpu 1:
 inode_is_dirtytime_only include/linux/fs.h:2470 [inline]
 __ext4_update_other_inode_time+0x45/0x550 fs/ext4/inode.c:5010
 ext4_update_other_inodes_time fs/ext4/inode.c:5053 [inline]
 ext4_do_update_inode fs/ext4/inode.c:5102 [inline]
 ext4_mark_iloc_dirty+0x4c6/0x890 fs/ext4/inode.c:5694
 __ext4_mark_inode_dirty+0x4ec/0x5f0 fs/ext4/inode.c:5890
 ext4_ext_tree_init+0x94/0xa0 fs/ext4/extents.c:870
 __ext4_new_inode+0x29e6/0x2fc0 fs/ext4/ialloc.c:1334
 ext4_symlink+0x2cc/0x700 fs/ext4/namei.c:3293
 vfs_symlink+0x241/0x330 fs/namei.c:4248
 do_symlinkat+0x104/0x380 fs/namei.c:4277
 __do_sys_symlink fs/namei.c:4299 [inline]
 __se_sys_symlink fs/namei.c:4297 [inline]
 __x64_sys_symlink+0x52/0x60 fs/namei.c:4297
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae

value changed: 0x0000000000008008 -> 0x000000000000800f

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 9116 Comm: syz-executor.2 Not tainted 5.16.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
==================================================================

Crashes (134):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	VM info	Title
ci2-upstream-kcsan-gce	2021/12/16 14:12	upstream	2b14864acbaa	8dd6a5e3	.config	log	report	info	KCSAN: data-race in __ext4_update_other_inode_time / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/12/15 00:22	upstream	5472f14a3742	f752fb53	.config	log	report	info	KCSAN: data-race in __ext4_update_other_inode_time / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/12/11 02:00	upstream	9e65da135b39	49ca1f59	.config	log	report	info	KCSAN: data-race in __ext4_update_other_inode_time / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/12/02 01:28	upstream	58e1100fdc59	61f86278	.config	log	report	info	KCSAN: data-race in __ext4_update_other_inode_time / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/11/28 08:38	upstream	3498e7f2bb41	63eeac02	.config	log	report	info	KCSAN: data-race in __ext4_update_other_inode_time / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/11/15 12:04	upstream	8ab774587903	75b04091	.config	log	report	info	KCSAN: data-race in __ext4_update_other_inode_time / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/11/13 20:36	upstream	a9b9669d9822	75b04091	.config	log	report	info	KCSAN: data-race in __ext4_update_other_inode_time / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/11/10 18:38	upstream	89d714ab6043	75b04091	.config	log	report	info	KCSAN: data-race in __ext4_update_other_inode_time / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/11/08 11:41	upstream	6b75d88fa81b	d29682f1	.config	log	report	info	KCSAN: data-race in __ext4_update_other_inode_time / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/11/04 03:48	upstream	ce840177930f	4c1be0be	.config	log	report	info	KCSAN: data-race in __ext4_update_other_inode_time / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/11/03 11:02	upstream	56d33754481f	17f3edd2	.config	log	report	info	KCSAN: data-race in __ext4_update_other_inode_time / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/10/29 08:34	upstream	f25a5481af12	2353a3ec	.config	log	report	info	KCSAN: data-race in __ext4_update_other_inode_time / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/10/25 17:46	upstream	87066fdd2e30	4f0000ee	.config	log	report	info	KCSAN: data-race in __ext4_update_other_inode_time / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/10/13 08:08	upstream	f4d0cc426f77	9d56e7dd	.config	log	report	info	KCSAN: data-race in __ext4_update_other_inode_time / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/10/07 16:21	upstream	5af4055fa813	efe0f24d	.config	log	report	info	KCSAN: data-race in __ext4_update_other_inode_time / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/09/29 23:52	upstream	02d5e016800d	be530f6c	.config	log	report	info	KCSAN: data-race in __ext4_update_other_inode_time / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/09/24 13:22	upstream	f9e36107ec70	8cac236e	.config	log	report	info	KCSAN: data-race in __ext4_update_other_inode_time / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/09/21 11:54	upstream	d9fb678414c0	af796c18	.config	log	report	info	KCSAN: data-race in __ext4_update_other_inode_time / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/09/20 01:16	upstream	20621d2f27a0	70b76c1d	.config	log	report	info	KCSAN: data-race in __ext4_update_other_inode_time / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/09/17 22:14	upstream	ddf21bd8ab98	70b76c1d	.config	log	report	info	KCSAN: data-race in __ext4_update_other_inode_time / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/09/15 13:44	upstream	3ca706c189db	07e953c1	.config	log	report	info	KCSAN: data-race in __ext4_update_other_inode_time / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/09/14 18:16	upstream	1619b69edce1	07e953c1	.config	log	report	info	KCSAN: data-race in __ext4_update_other_inode_time / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/08/27 10:36	upstream	77dd11439b86	b318694d	.config	log	report	info	KCSAN: data-race in __ext4_update_other_inode_time / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/08/09 09:24	upstream	36a21d51725a	6972b106	.config	log	report	info	KCSAN: data-race in __ext4_update_other_inode_time / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/08/04 17:00	upstream	d5ad8ec3cfb5	b97d64c9	.config	log	report	info	KCSAN: data-race in __ext4_update_other_inode_time / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/07/30 21:15	upstream	4669e13cd67f	6c236867	.config	log	report	info	KCSAN: data-race in __ext4_update_other_inode_time / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/07/22 11:37	upstream	3d5895cd3517	241790bb	.config	log	report	info	KCSAN: data-race in __ext4_update_other_inode_time / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/07/19 23:08	upstream	2734d6c1b1a0	bc48c9ab	.config	log	report	info	KCSAN: data-race in __ext4_update_other_inode_time / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/07/16 04:06	upstream	dd9c7df94c1b	f115ae98	.config	log	report	info	KCSAN: data-race in __ext4_update_other_inode_time / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/06/26 05:09	upstream	b7050b242430	ae6bf8dd	.config	log	report	info	KCSAN: data-race in __ext4_update_other_inode_time / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/06/15 18:41	upstream	94f0b2d4a1d0	8022d7e3	.config	log	report	info	KCSAN: data-race in __ext4_update_other_inode_time / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/06/13 21:47	upstream	e4e453434a19	1ba81399	.config	log	report	info	KCSAN: data-race in __ext4_update_other_inode_time / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/06/12 15:57	upstream	ad347abe4a98	1ba81399	.config	log	report	info	KCSAN: data-race in __ext4_update_other_inode_time / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/06/11 01:41	upstream	f09eacca59d2	1ba81399	.config	log	report	info	KCSAN: data-race in __ext4_update_other_inode_time / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/06/09 08:00	upstream	368094df48e6	5c2fe346	.config	log	report	info	KCSAN: data-race in __ext4_update_other_inode_time / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/06/07 07:32	upstream	614124bea77e	e59537be	.config	log	report	info	KCSAN: data-race in __ext4_update_other_inode_time / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/05/30 07:36	upstream	b90e90f40b4f	325a8dab	.config	log	report	info	KCSAN: data-race in __ext4_update_other_inode_time / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/05/28 19:39	upstream	5ff2756afde0	858ea628	.config	log	report	info	KCSAN: data-race in __ext4_update_other_inode_time / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/05/28 02:24	upstream	97e5bf604b7a	858ea628	.config	log	report	info	KCSAN: data-race in __ext4_update_other_inode_time / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/05/27 12:47	upstream	d7c5303fbc8a	858ea628	.config	log	report	info	KCSAN: data-race in __ext4_update_other_inode_time / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/05/26 23:01	upstream	7ac3a1c1ae51	858ea628	.config	log	report	info	KCSAN: data-race in __ext4_update_other_inode_time / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/05/26 10:38	upstream	ad9f25d33860	750ce164	.config	log	report	info	KCSAN: data-race in __ext4_update_other_inode_time / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/05/25 17:35	upstream	a050a6d2b7e8	93d3a9f6	.config	log	report	info	KCSAN: data-race in __ext4_update_other_inode_time / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/05/21 14:34	upstream	79a106fc6585	3c7fef33	.config	log	report	info	KCSAN: data-race in __ext4_update_other_inode_time / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/05/17 23:13	upstream	8ac91e6c6033	a343ba6b	.config	log	report	info	KCSAN: data-race in __ext4_update_other_inode_time / __mark_inode_dirty
ci2-upstream-kcsan-gce	2021/01/14 16:09	upstream	65f0d2414b70	468dbb55	.config	log	report	info
ci2-upstream-kcsan-gce	2020/11/02 12:01	upstream	3cea11cd5e3b	8bc4594f	.config	log	report	info
ci2-upstream-kcsan-gce	2020/06/20 11:59	upstream	672f9255a727	c655ec77	.config	log	report