FEX-Emu/linux
1
0
Fork 0
mirror of https://github.com/FEX-Emu/linux.git synced 2024-12-29 13:00:35 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

udf: Allow volume descriptor sequence to be terminated by unrecorded block

Browse Source 
According to ECMA-167 3/8.4.2 a volume descriptor sequence can be
terminated also by an unrecorded block within the extent of volume
descriptor sequence. Currently we errored out in such case making such
volumes unmountable. Handle that case by treating any invalid block as a
block terminating the sequence.

Reported-by: Pali Rohár <pali.rohar@gmail.com>
Acked-by: Pali Rohár <pali.rohar@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
This commit is contained in:
Jan Kara 2018-02-08 18:10:54 +01:00
parent 7b568cba4f
commit 67621675e9
1 changed files with 2 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
fs/udf/super.c
View File

@ -1627,12 +1627,8 @@ static noinline int udf_process_sequence(
for (; (!done && block <= lastblock); block++) {
bh = udf_read_tagged(sb, block, block, &ident);
if (!bh) {
udf_err(sb,
"Block %llu of volume descriptor sequence is corrupted or we could not read it\n",
(unsigned long long)block);
return -EAGAIN;
}
if (!bh)
break;
/* Process each descriptor (ISO 13346 3/8.3-8.4) */
gd = (struct generic_desc *)bh->b_data;