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authorAlexander Ivanov <alexander.ivanov@virtuozzo.com>2023-04-24 11:31:38 +0200
committerHanna Czenczek <hreitz@redhat.com>2023-06-05 13:13:50 +0200
commit679749ce41bc61ff92fb857a66497a03c241b8c2 (patch)
treeced276fe889a23d3340b4fb83a990c85d24d49e3 /block
parentab2d739c417ccc7c7bd6c805899c06992bf3bfb1 (diff)
parallels: Fix image_end_offset and data_end after out-of-image check
Set data_end to the end of the last cluster inside the image. In such a way we can be sure that corrupted offsets in the BAT can't affect on the image size. If there are no allocated clusters set image_end_offset by data_end. Signed-off-by: Alexander Ivanov <alexander.ivanov@virtuozzo.com> Reviewed-by: Denis V. Lunev <den@openvz.org> Message-Id: <20230424093147.197643-4-alexander.ivanov@virtuozzo.com> Reviewed-by: Hanna Czenczek <hreitz@redhat.com> Signed-off-by: Hanna Czenczek <hreitz@redhat.com>
Diffstat (limited to 'block')
-rw-r--r--block/parallels.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/block/parallels.c b/block/parallels.c
index 204d20685b..ea382e8382 100644
--- a/block/parallels.c
+++ b/block/parallels.c
@@ -490,7 +490,13 @@ parallels_co_check(BlockDriverState *bs, BdrvCheckResult *res,
}
}
- res->image_end_offset = high_off + s->cluster_size;
+ if (high_off == 0) {
+ res->image_end_offset = s->data_end << BDRV_SECTOR_BITS;
+ } else {
+ res->image_end_offset = high_off + s->cluster_size;
+ s->data_end = res->image_end_offset >> BDRV_SECTOR_BITS;
+ }
+
if (size > res->image_end_offset) {
int64_t count;
count = DIV_ROUND_UP(size - res->image_end_offset, s->cluster_size);