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authorJan Kara <jack@suse.cz>2018-02-08 20:10:54 +0300
committerJan Kara <jack@suse.cz>2018-02-16 13:15:09 +0300
commit67621675e9636ed272a4f0235215accdfbc99768 (patch)
treea541912ca630b90ec66a8cb18a3ecc5d3c5b18e3 /fs/udf
parent7b568cba4f0af32522f84c1378e71a47a9c61bb0 (diff)
downloadlinux-67621675e9636ed272a4f0235215accdfbc99768.tar.xz
udf: Allow volume descriptor sequence to be terminated by unrecorded block
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>
Diffstat (limited to 'fs/udf')
-rw-r--r--fs/udf/super.c8
1 files changed, 2 insertions, 6 deletions
diff --git a/fs/udf/super.c b/fs/udf/super.c
index f80b97173acd..456d737fc7ca 100644
--- a/fs/udf/super.c
+++ b/fs/udf/super.c
@@ -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;