6.6-stable review patch. If anyone has any objections, please let me know.
------------------
From: Darrick J. Wong <djwong@xxxxxxxxxx>
commit 9c235dfc3d3f901fe22acb20f2ab37ff39f2ce02 upstream.
When we're recovering ondisk quota records from the log, we need to
validate the recovered buffer contents before writing them to disk.
Signed-off-by: Darrick J. Wong <djwong@xxxxxxxxxx>
Reviewed-by: Christoph Hellwig <hch@xxxxxx>
Signed-off-by: Chandan Babu R <chandanbabu@xxxxxxxxxx>
Signed-off-by: Catherine Hoang <catherine.hoang@xxxxxxxxxx>
Acked-by: Chandan Babu R <chandanbabu@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
fs/xfs/xfs_dquot_item_recover.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/fs/xfs/xfs_dquot_item_recover.c b/fs/xfs/xfs_dquot_item_recover.c
index db2cb5e4197b..2c2720ce6923 100644
--- a/fs/xfs/xfs_dquot_item_recover.c
+++ b/fs/xfs/xfs_dquot_item_recover.c
@@ -19,6 +19,7 @@
#include "xfs_log.h"
#include "xfs_log_priv.h"
#include "xfs_log_recover.h"
+#include "xfs_error.h"
STATIC void
xlog_recover_dquot_ra_pass2(
@@ -152,6 +153,19 @@ xlog_recover_dquot_commit_pass2(
XFS_DQUOT_CRC_OFF);
}
+ /* Validate the recovered dquot. */
+ fa = xfs_dqblk_verify(log->l_mp, dqb, dq_f->qlf_id);
+ if (fa) {
+ XFS_CORRUPTION_ERROR("Bad dquot after recovery",
+ XFS_ERRLEVEL_LOW, mp, dqb,
+ sizeof(struct xfs_dqblk));
+ xfs_alert(mp,
+ "Metadata corruption detected at %pS, dquot 0x%x",
+ fa, dq_f->qlf_id);
+ error = -EFSCORRUPTED;
+ goto out_release;
+ }
+
ASSERT(dq_f->qlf_size == 2);
ASSERT(bp->b_mount == mp);
bp->b_flags |= _XBF_LOGRECOVERY;
--
2.43.0
