On Sat, Mar 28, 2020 at 02:54:01PM -0700, Josh Triplett wrote:
> ext4_fill_super doublechecks the number of groups before mounting; if
> that check fails, the resulting error message prints the group count
> from the ext4_sb_info sbi, which hasn't been set yet. Print the freshly
> computed group count instead (which at that point has just been computed
> in "blocks_count").
>
> Signed-off-by: Josh Triplett <josh@xxxxxxxxxxxxxxxx>
> Fixes: 4ec1102813798 ("ext4: Add sanity checks for the superblock before mounting the filesystem")
Applied, with a fix to the format string:
> fs/ext4/super.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/fs/ext4/super.c b/fs/ext4/super.c
> index 0c7c4adb664e..7f5f37653a03 100644
> --- a/fs/ext4/super.c
> +++ b/fs/ext4/super.c
> @@ -4288,7 +4288,7 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
> if (blocks_count > ((uint64_t)1<<32) - EXT4_DESC_PER_BLOCK(sb)) {
> ext4_msg(sb, KERN_WARNING, "groups count too large: %u "
s/%u/%llu/
> "(block count %llu, first data block %u, "
> - "blocks per group %lu)", sbi->s_groups_count,
> + "blocks per group %lu)", blocks_count,
> ext4_blocks_count(es),
> le32_to_cpu(es->s_first_data_block),
> EXT4_BLOCKS_PER_GROUP(sb));
> --
> 2.26.0
- Ted
