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| author | Darrick J. Wong <darrick.wong@oracle.com> | 2017-02-02 15:13:58 -0800 |
|---|---|---|
| committer | Darrick J. Wong <darrick.wong@oracle.com> | 2017-02-02 15:13:58 -0800 |
| commit | d5a91baeb6033c3392121e4d5c011cdc08dfa9f7 (patch) | |
| tree | f8a831534ecc6270b9cf57164de9e881b46ce02c /fs/xfs/libxfs/xfs_btree.h | |
| parent | 7a652bbe366464267190c2792a32ce4fff5595ef (diff) | |
| download | linux-stable-d5a91baeb6033c3392121e4d5c011cdc08dfa9f7.tar.gz linux-stable-d5a91baeb6033c3392121e4d5c011cdc08dfa9f7.tar.bz2 linux-stable-d5a91baeb6033c3392121e4d5c011cdc08dfa9f7.zip | |
xfs: filter out obviously bad btree pointers
Don't let anybody load an obviously bad btree pointer. Since the values
come from disk, we must return an error, not just ASSERT.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Eric Sandeen <sandeen@redhat.com>
Diffstat (limited to 'fs/xfs/libxfs/xfs_btree.h')
| -rw-r--r-- | fs/xfs/libxfs/xfs_btree.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/xfs/libxfs/xfs_btree.h b/fs/xfs/libxfs/xfs_btree.h index cdd4f05a5976..4bb62580a7fd 100644 --- a/fs/xfs/libxfs/xfs_btree.h +++ b/fs/xfs/libxfs/xfs_btree.h @@ -458,7 +458,7 @@ static inline int xfs_btree_get_level(struct xfs_btree_block *block) #define XFS_FILBLKS_MAX(a,b) max_t(xfs_filblks_t, (a), (b)) #define XFS_FSB_SANITY_CHECK(mp,fsb) \ - (XFS_FSB_TO_AGNO(mp, fsb) < mp->m_sb.sb_agcount && \ + (fsb && XFS_FSB_TO_AGNO(mp, fsb) < mp->m_sb.sb_agcount && \ XFS_FSB_TO_AGBNO(mp, fsb) < mp->m_sb.sb_agblocks) /* |