On Fri, Jul 06, 2018 at 11:43:24AM -0600, dann frazier wrote:
> Hi,
> We're seeing a regression triggered by the stress-ng[*] "chdir" test
> that I've bisected to:
>
> 044e6e3d74a3 ext4: don't update checksum of new initialized bitmaps
>
> So far we've only seen failures on servers based on HiSilicon's family
> of ARM64 SoCs (D05/Hi1616 SoC, D06/Hi1620 SoC). On these systems it is
> very reproducible.
Thanks for the report. Can you verify whether or not this patch fixes
things for you?
- Ted
diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c
index da6c10c1e37a..1cfb74bc4dca 100644
--- a/fs/ext4/ialloc.c
+++ b/fs/ext4/ialloc.c
@@ -90,6 +90,8 @@ static int ext4_validate_inode_bitmap(struct super_block *sb,
return -EFSCORRUPTED;
ext4_lock_group(sb, block_group);
+ if (buffer_verified(bh))
+ goto verified;
blk = ext4_inode_bitmap(sb, desc);
if (!ext4_inode_bitmap_csum_verify(sb, block_group, desc, bh,
EXT4_INODES_PER_GROUP(sb) / 8)) {
@@ -101,6 +103,7 @@ static int ext4_validate_inode_bitmap(struct super_block *sb,
return -EFSBADCRC;
}
set_buffer_verified(bh);
+verified:
ext4_unlock_group(sb, block_group);
return 0;
}
