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[PATCH 01/10] parallels: Incorrect condition in out-of-image check


From: Alexander Ivanov
Subject: [PATCH 01/10] parallels: Incorrect condition in out-of-image check
Date: Wed, 17 Aug 2022 17:53:52 +0200

All the offsets in the BAT must be at least one cluster away from
the end of the data area.
Fix the check condition for correct check.

Signed-off-by: Alexander Ivanov <alexander.ivanov@virtuozzo.com>
---
 block/parallels.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/block/parallels.c b/block/parallels.c
index e124a8bb7d..c42c955075 100644
--- a/block/parallels.c
+++ b/block/parallels.c
@@ -455,7 +455,7 @@ static int parallels_check_outside_image(BlockDriverState 
*bs,
 
     for (i = 0; i < s->bat_size; i++) {
         off = bat2sect(s, i) << BDRV_SECTOR_BITS;
-        if (off > size) {
+        if (off + s->cluster_size > size) {
             fprintf(stderr, "%s cluster %u is outside image\n",
                     fix & BDRV_FIX_ERRORS ? "Repairing" : "ERROR", i);
             res->corruptions++;
-- 
2.34.1




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