Looks good.
Reviewed-by: Carlos Maiolino <cmaiolino@xxxxxxxxxx>
On Sun, Apr 21, 2013 at 10:57:05PM -0400, Theodore Ts'o wrote:
> Addresses-Red-Hat-Bugzilla: #913245
>
> Reported-by: Eric Sandeen <sandeen@xxxxxxxxxx>
> Signed-off-by: "Theodore Ts'o" <tytso@xxxxxxx>
> Cc: stable@xxxxxxxxxxxxxxx
> ---
> fs/ext4/resize.c | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/fs/ext4/resize.c b/fs/ext4/resize.c
> index 08d2312..b27c96d 100644
> --- a/fs/ext4/resize.c
> +++ b/fs/ext4/resize.c
> @@ -1882,6 +1882,10 @@ retry:
> return 0;
>
> n_group = ext4_get_group_number(sb, n_blocks_count - 1);
> + if (n_group > (0xFFFFFFFFUL / EXT4_INODES_PER_GROUP(sb))) {
> + ext4_warning(sb, "resize would cause inodes_count overflow");
> + return -EINVAL;
> + }
> ext4_get_group_no_and_offset(sb, o_blocks_count - 1, &o_group, &offset);
>
> n_desc_blocks = num_desc_blocks(sb, n_group + 1);
> --
> 1.7.12.rc0.22.gcdd159b
>
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--
Carlos
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