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Revert "udf: Avoid excessive partition lengths"

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This reverts commit 53de2c2b51.
This commit is contained in:
Ksawlii 2024-11-24 00:23:43 +01:00
parent 23f35dbaf9
commit 4bd71292a1
1 changed files with 0 additions and 15 deletions
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15
fs/udf/super.c
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@ -1083,19 +1083,12 @@ static int udf_fill_partdesc_info(struct super_block *sb,
struct udf_part_map *map;
struct udf_sb_info *sbi = UDF_SB(sb);
struct partitionHeaderDesc *phd;
u32 sum;
int err;
map = &sbi->s_partmaps[p_index];
map->s_partition_len = le32_to_cpu(p->partitionLength); /* blocks */
map->s_partition_root = le32_to_cpu(p->partitionStartingLocation);
if (check_add_overflow(map->s_partition_root, map->s_partition_len,
&sum)) {
udf_err(sb, "Partition %d has invalid location %u + %u\n",
p_index, map->s_partition_root, map->s_partition_len);
return -EFSCORRUPTED;
}
if (p->accessType == cpu_to_le32(PD_ACCESS_TYPE_READ_ONLY))
map->s_partition_flags |= UDF_PART_FLAG_READ_ONLY;
@ -1151,14 +1144,6 @@ static int udf_fill_partdesc_info(struct super_block *sb,
bitmap->s_extPosition = le32_to_cpu(
phd->unallocSpaceBitmap.extPosition);
map->s_partition_flags |= UDF_PART_FLAG_UNALLOC_BITMAP;
/* Check whether math over bitmap won't overflow. */
if (check_add_overflow(map->s_partition_len,
sizeof(struct spaceBitmapDesc) << 3,
&sum)) {
udf_err(sb, "Partition %d is too long (%u)\n", p_index,
map->s_partition_len);
return -EFSCORRUPTED;
}
udf_debug("unallocSpaceBitmap (part %d) @ %u\n",
p_index, bitmap->s_extPosition);
}