libxfs: validate metadata LSNs against log on v5 superblocks

[thirdparty/xfsprogs-dev.git] / libxfs / xfs_ialloc.c

diff --git a/libxfs/xfs_ialloc.c b/libxfs/xfs_ialloc.c
index 93bfaea5cd0f8ee1d33359ae236fcbac82ed7b8b..d39f9b62516b8edc775238179fc468063589eccd 100644 (file)
--- a/libxfs/xfs_ialloc.c
+++ b/libxfs/xfs_ialloc.c
@@ -2495,9 +2495,14 @@ xfs_agi_verify(
        struct xfs_mount *mp = bp->b_target->bt_mount;
        struct xfs_agi  *agi = XFS_BUF_TO_AGI(bp);
 
-       if (xfs_sb_version_hascrc(&mp->m_sb) &&
-           !uuid_equal(&agi->agi_uuid, &mp->m_sb.sb_meta_uuid))
+       if (xfs_sb_version_hascrc(&mp->m_sb)) {
+               if (!uuid_equal(&agi->agi_uuid, &mp->m_sb.sb_meta_uuid))
+                       return false;
+               if (!xfs_log_check_lsn(mp,
+                               be64_to_cpu(XFS_BUF_TO_AGI(bp)->agi_lsn)))
                        return false;
+       }
+
        /*
         * Validate the magic number of the agi block.
         */