diff options
author | Jan Kara <jack@suse.cz> | 2018-12-12 16:29:20 +0300 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-02-20 12:13:09 +0300 |
commit | ea59fcf67d78432cb87bbdc41936637112570120 (patch) | |
tree | 343c22b067a834391b77e63de30e295e4d92e7a6 /fs/udf | |
parent | 0d997e1635f7fccc4e7b572b814734b0f6ac9095 (diff) | |
download | linux-ea59fcf67d78432cb87bbdc41936637112570120.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>
Diffstat (limited to 'fs/udf')
-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 0e659d9c69a1..613193c6bb42 100644 --- a/fs/udf/inode.c +++ b/fs/udf/inode.c @@ -1364,6 +1364,12 @@ 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; |