diff options
| author | Darrick J. Wong <darrick.wong@oracle.com> | 2018-01-08 10:51:07 -0800 |
|---|---|---|
| committer | Darrick J. Wong <darrick.wong@oracle.com> | 2018-01-08 10:54:47 -0800 |
| commit | 8ba92d43d499f4920af983a7c16e02304dd36932 (patch) | |
| tree | 48abe89c855c9d9ecc7be9a40fca11e88d1605fc /fs/xfs/libxfs/xfs_attr_leaf.c | |
| parent | 9cfb9b47479e237d217dbcfafe034cbf98f45909 (diff) | |
| download | linux-8ba92d43d499f4920af983a7c16e02304dd36932.tar.bz2 | |
xfs: fail out of xfs_attr3_leaf_lookup_int if it looks corrupt
If the xattr leaf block looks corrupt, return -EFSCORRUPTED to userspace
instead of ASSERTing on debug kernels or running off the end of the
buffer on regular kernels.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Diffstat (limited to 'fs/xfs/libxfs/xfs_attr_leaf.c')
| -rw-r--r-- | fs/xfs/libxfs/xfs_attr_leaf.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/fs/xfs/libxfs/xfs_attr_leaf.c b/fs/xfs/libxfs/xfs_attr_leaf.c index ae3bccb4aa5a..7168827ca758 100644 --- a/fs/xfs/libxfs/xfs_attr_leaf.c +++ b/fs/xfs/libxfs/xfs_attr_leaf.c @@ -2249,7 +2249,8 @@ xfs_attr3_leaf_lookup_int( leaf = bp->b_addr; xfs_attr3_leaf_hdr_from_disk(args->geo, &ichdr, leaf); entries = xfs_attr3_leaf_entryp(leaf); - ASSERT(ichdr.count < args->geo->blksize / 8); + if (ichdr.count >= args->geo->blksize / 8) + return -EFSCORRUPTED; /* * Binary search. (note: small blocks will skip this loop) @@ -2265,8 +2266,10 @@ xfs_attr3_leaf_lookup_int( else break; } - ASSERT(probe >= 0 && (!ichdr.count || probe < ichdr.count)); - ASSERT(span <= 4 || be32_to_cpu(entry->hashval) == hashval); + if (!(probe >= 0 && (!ichdr.count || probe < ichdr.count))) + return -EFSCORRUPTED; + if (!(span <= 4 || be32_to_cpu(entry->hashval) == hashval)) + return -EFSCORRUPTED; /* * Since we may have duplicate hashval's, find the first matching |