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| author |   Alden Tondettar <alden.tondettar@gmail.com> | 2016-05-18 14:09:17 -0700 |
|---|---|---|
| committer |   Jan Kara <jack@suse.cz> | 2016-05-19 11:55:53 +0200 |
| commit | 585d70006f6e30f42e96d56c6c0933671c516c7b (patch) | |
| tree | 07531d00ad87220b8f049b1b4abf75ece7a22929 /fs/udf | |
| parent | Merge tag 'trace-v4.7' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace (diff) | |
| download | wireguard-linux-585d70006f6e30f42e96d56c6c0933671c516c7b.tar.xz wireguard-linux-585d70006f6e30f42e96d56c6c0933671c516c7b.zip | |
udf: Don't BUG on missing metadata partition descriptor
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@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'fs/udf')
| -rw-r--r-- | fs/udf/partition.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/fs/udf/partition.c b/fs/udf/partition.c index 5f861ed287c3..e4e9e70c37f2 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"); |