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| author | Darrick J. Wong <darrick.wong@oracle.com> | 2019-03-19 08:16:21 -0700 |
|---|---|---|
| committer | Darrick J. Wong <darrick.wong@oracle.com> | 2019-03-19 08:16:21 -0700 |
| commit | 228de124f290e6b981b2c61fbd78215e11264044 (patch) | |
| tree | ab60a57d0238ccba12d3186c58a47734217495fe /fs | |
| parent | 6958d11f77d45db80f7e22a21a74d4d5f44dc667 (diff) | |
| download | linux-228de124f290e6b981b2c61fbd78215e11264044.tar.bz2 | |
xfs: dabtree scrub needs to range-check level
Make sure scrub's dabtree iterator function checks that we're not
going deeper in the stack than our cursor permits.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/xfs/scrub/dabtree.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/fs/xfs/scrub/dabtree.c b/fs/xfs/scrub/dabtree.c index f1260b4bfdee..90527b094878 100644 --- a/fs/xfs/scrub/dabtree.c +++ b/fs/xfs/scrub/dabtree.c @@ -574,6 +574,11 @@ xchk_da_btree( /* Drill another level deeper. */ blkno = be32_to_cpu(key->before); level++; + if (level >= XFS_DA_NODE_MAXDEPTH) { + /* Too deep! */ + xchk_da_set_corrupt(&ds, level - 1); + break; + } ds.tree_level--; error = xchk_da_btree_block(&ds, level, blkno); if (error) |