On Wed 18-05-16 14:09:17, Alden Tondettar wrote:
> Currently, if a metadata partition map is missing its partition descriptor,
> then udf_get_pblock_meta25() will BUG() out the first time it is called.
> This is rather drastic for a corrupted filesystem, so just treat this case
> as an invalid mapping instead.
>
> Signed-off-by: Alden Tondettar <alden.tondettar@xxxxxxxxx>
Thanks. I have added this patch to my tree.
Honza
> ---
> fs/udf/partition.c | 5 +++--
> 1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/fs/udf/partition.c b/fs/udf/partition.c
> index 5f861ed2..e4e9e70 100644
> --- a/fs/udf/partition.c
> +++ b/fs/udf/partition.c
> @@ -317,8 +317,9 @@ uint32_t udf_get_pblock_meta25(struct super_block *sb, uint32_t block,
> mdata = &map->s_type_specific.s_metadata;
> inode = mdata->s_metadata_fe ? : mdata->s_mirror_fe;
>
> - /* We shouldn't mount such media... */
> - BUG_ON(!inode);
> + if (!inode)
> + return 0xFFFFFFFF;
> +
> retblk = udf_try_read_meta(inode, block, partition, offset);
> if (retblk == 0xFFFFFFFF && mdata->s_metadata_fe) {
> udf_warn(sb, "error reading from METADATA, trying to read from MIRROR\n");
> --
> 2.1.4
>
>
--
Jan Kara <jack@xxxxxxxx>
SUSE Labs, CR
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