diff options
| author | Darrick J. Wong <djwong@kernel.org> | 2021-09-16 12:22:08 -0700 |
|---|---|---|
| committer | Darrick J. Wong <djwong@kernel.org> | 2021-10-14 09:19:32 -0700 |
| commit | 4c175af2ccd3e0d618b2af941e656fabc453c4af (patch) | |
| tree | 2a0519dce6ab1e02868ece89176759d571b64709 /fs/xfs/libxfs/xfs_btree_staging.c | |
| parent | 1ba6fd34ca63feb4ee960d35b87262b6db37529a (diff) | |
xfs: check that bc_nlevels never overflows
Warn if we ever bump nlevels higher than the allowed maximum cursor
height.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Chandan Babu R <chandan.babu@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'fs/xfs/libxfs/xfs_btree_staging.c')
| -rw-r--r-- | fs/xfs/libxfs/xfs_btree_staging.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/xfs/libxfs/xfs_btree_staging.c b/fs/xfs/libxfs/xfs_btree_staging.c index 89c8a1498df1..cc56efc2b90a 100644 --- a/fs/xfs/libxfs/xfs_btree_staging.c +++ b/fs/xfs/libxfs/xfs_btree_staging.c @@ -703,6 +703,7 @@ xfs_btree_bload_compute_geometry( * block-based btree level. */ cur->bc_nlevels++; + ASSERT(cur->bc_nlevels <= XFS_BTREE_MAXLEVELS); xfs_btree_bload_level_geometry(cur, bbl, level, nr_this_level, &avg_per_block, &level_blocks, &dontcare64); @@ -718,6 +719,7 @@ xfs_btree_bload_compute_geometry( /* Otherwise, we need another level of btree. */ cur->bc_nlevels++; + ASSERT(cur->bc_nlevels <= XFS_BTREE_MAXLEVELS); } nr_blocks += level_blocks; |