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-rw-r--r--fs/xfs/libxfs/xfs_sb.c13
1 files changed, 11 insertions, 2 deletions
diff --git a/fs/xfs/libxfs/xfs_sb.c b/fs/xfs/libxfs/xfs_sb.c
index a70aec910626..2580262e4ea0 100644
--- a/fs/xfs/libxfs/xfs_sb.c
+++ b/fs/xfs/libxfs/xfs_sb.c
@@ -262,6 +262,12 @@ xfs_mount_validate_sb(
return -EFSCORRUPTED;
}
+ if (xfs_sb_version_hascrc(&mp->m_sb) &&
+ sbp->sb_blocksize < XFS_MIN_CRC_BLOCKSIZE) {
+ xfs_notice(mp, "v5 SB sanity check failed");
+ return -EFSCORRUPTED;
+ }
+
/*
* Until this is fixed only page-sized or smaller data blocks work.
*/
@@ -338,13 +344,16 @@ xfs_sb_quota_from_disk(struct xfs_sb *sbp)
XFS_PQUOTA_CHKD : XFS_GQUOTA_CHKD;
sbp->sb_qflags &= ~(XFS_OQUOTA_ENFD | XFS_OQUOTA_CHKD);
- if (sbp->sb_qflags & XFS_PQUOTA_ACCT) {
+ if (sbp->sb_qflags & XFS_PQUOTA_ACCT &&
+ sbp->sb_gquotino != NULLFSINO) {
/*
* In older version of superblock, on-disk superblock only
* has sb_gquotino, and in-core superblock has both sb_gquotino
* and sb_pquotino. But, only one of them is supported at any
* point of time. So, if PQUOTA is set in disk superblock,
- * copy over sb_gquotino to sb_pquotino.
+ * copy over sb_gquotino to sb_pquotino. The NULLFSINO test
+ * above is to make sure we don't do this twice and wipe them
+ * both out!
*/
sbp->sb_pquotino = sbp->sb_gquotino;
sbp->sb_gquotino = NULLFSINO;