diff options
| author | Jan Kara <jack@suse.cz> | 2018-12-12 16:29:20 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-02-12 21:44:55 +0300 |
| commit | 46171c3288228a0200f677d166080fd856f21980 (patch) | |
| tree | be3f06bf0194a1bac53af6700982bfda637801e5 | |
| parent | f12dcce8351907abffc6a4b6b4f39629ee4b274d (diff) | |
| download | linux-46171c3288228a0200f677d166080fd856f21980.tar.xz | |
udf: Fix BUG on corrupted inode
[ Upstream commit d288d95842f1503414b7eebce3773bac3390457e ]
When inode is corrupted so that extent type is invalid, some functions
(such as udf_truncate_extents()) will just BUG. Check that extent type
is valid when loading the inode to memory.
Reported-by: Anatoly Trosinenko <anatoly.trosinenko@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | fs/udf/inode.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/udf/inode.c b/fs/udf/inode.c index 035943501b9f..fd817022cb9b 100644 --- a/fs/udf/inode.c +++ b/fs/udf/inode.c @@ -1372,6 +1372,12 @@ reread: iinfo->i_alloc_type = le16_to_cpu(fe->icbTag.flags) & ICBTAG_FLAG_AD_MASK; + if (iinfo->i_alloc_type != ICBTAG_FLAG_AD_SHORT && + iinfo->i_alloc_type != ICBTAG_FLAG_AD_LONG && + iinfo->i_alloc_type != ICBTAG_FLAG_AD_IN_ICB) { + ret = -EIO; + goto out; + } iinfo->i_unique = 0; iinfo->i_lenEAttr = 0; iinfo->i_lenExtents = 0; |