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| author | Barry Naujok <bnaujok@sgi.com> | 2008-10-30 17:05:49 +1100 |
|---|---|---|
| committer | Lachlan McIlroy <lachlan@sgi.com> | 2008-10-30 17:05:49 +1100 |
| commit | 89b2839319cb0c0364d55dc6fd6d3838e864ab54 (patch) | |
| tree | 495f9ce90c83f5af8d594814ba4a12a389d8f8cc /fs/xfs | |
| parent | 847fff5ca881670ca8ec617afeb943950f0c804b (diff) | |
| download | blackbird-op-linux-89b2839319cb0c0364d55dc6fd6d3838e864ab54.tar.gz blackbird-op-linux-89b2839319cb0c0364d55dc6fd6d3838e864ab54.zip | |
[XFS] Check agf_btreeblks is valid when reading in the AGF
SGI-PV: 987683
SGI-Modid: xfs-linux-melb:xfs-kern:32232a
Signed-off-by: Barry Naujok <bnaujok@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Diffstat (limited to 'fs/xfs')
| -rw-r--r-- | fs/xfs/xfs_alloc.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/xfs/xfs_alloc.c b/fs/xfs/xfs_alloc.c index 54fa69e27761..0a2a87208b17 100644 --- a/fs/xfs/xfs_alloc.c +++ b/fs/xfs/xfs_alloc.c @@ -2272,6 +2272,9 @@ xfs_alloc_read_agf( be32_to_cpu(agf->agf_flfirst) < XFS_AGFL_SIZE(mp) && be32_to_cpu(agf->agf_fllast) < XFS_AGFL_SIZE(mp) && be32_to_cpu(agf->agf_flcount) <= XFS_AGFL_SIZE(mp); + if (xfs_sb_version_haslazysbcount(&mp->m_sb)) + agf_ok = agf_ok && be32_to_cpu(agf->agf_btreeblks) <= + be32_to_cpu(agf->agf_length); if (unlikely(XFS_TEST_ERROR(!agf_ok, mp, XFS_ERRTAG_ALLOC_READ_AGF, XFS_RANDOM_ALLOC_READ_AGF))) { XFS_CORRUPTION_ERROR("xfs_alloc_read_agf", @@ -2297,6 +2300,7 @@ xfs_alloc_read_agf( #ifdef DEBUG else if (!XFS_FORCED_SHUTDOWN(mp)) { ASSERT(pag->pagf_freeblks == be32_to_cpu(agf->agf_freeblks)); + ASSERT(pag->pagf_btreeblks == be32_to_cpu(agf->agf_btreeblks)); ASSERT(pag->pagf_flcount == be32_to_cpu(agf->agf_flcount)); ASSERT(pag->pagf_longest == be32_to_cpu(agf->agf_longest)); ASSERT(pag->pagf_levels[XFS_BTNUM_BNOi] == |
