KCSAN: data-race in __ext4_update_other_inode_time / clear

similar bugs (3):
Kernel	Title	Count	Last	Reported	Patched	Status
upstream	KCSAN: data-race in __ext4_update_other_inode_time / clear_inode (2)	1	590d	590d	0/24	auto-closed as invalid on 2021/09/15 11:45
upstream	KCSAN: data-race in __ext4_update_other_inode_time / clear_inode (3)	1	528d	528d	0/24	auto-closed as invalid on 2021/11/16 12:09
upstream	KCSAN: data-race in __ext4_update_other_inode_time / clear_inode	25	938d	1008d	0/24	auto-closed as invalid on 2020/10/02 18:58

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

write to 0xffff888126083270 of 8 bytes by task 1825 on cpu 1:
 clear_inode+0xdd/0x110 fs/inode.c:552
 ext4_clear_inode+0x27/0x100 fs/ext4/super.c:1408
 ext4_free_inode+0x19f/0xa30 fs/ext4/ialloc.c:278
 ext4_evict_inode+0xbff/0xf10 fs/ext4/inode.c:332
 evict+0x1aa/0x410 fs/inode.c:590
 iput_final fs/inode.c:1670 [inline]
 iput+0x3ef/0x580 fs/inode.c:1696
 do_unlinkat+0x2d4/0x540 fs/namei.c:4174
 __do_sys_unlink fs/namei.c:4215 [inline]
 __se_sys_unlink fs/namei.c:4213 [inline]
 __x64_sys_unlink+0x2c/0x30 fs/namei.c:4213
 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 0xffff888126083270 of 8 bytes by task 24125 on cpu 0:
 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: 0x0000000000000000 -> 0x0000000000000060

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 24125 Comm: syz-executor.1 Not tainted 5.16.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
==================================================================

Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	VM info	Title
ci2-upstream-kcsan-gce	2021/12/20 08:26	upstream	a7904a538933	021b36cb	.config	console log	report	info	KCSAN: data-race in __ext4_update_other_inode_time / clear_inode
ci2-upstream-kcsan-gce	2021/12/16 19:24	upstream	fa36bbe6d43f	8dd6a5e3	.config	console log	report	info	KCSAN: data-race in __ext4_update_other_inode_time / clear_inode
ci2-upstream-kcsan-gce	2021/11/27 22:32	upstream	741392771338	63eeac02	.config	console log	report	info	KCSAN: data-race in __ext4_update_other_inode_time / clear_inode