@@ -2718,7 +2718,12 @@ bdrv_co_readv_vmstate(BlockDriverState *bs, QEMUIOVector *qiov, int64_t pos)
{
BlockDriver *drv = bs->drv;
BlockDriverState *child_bs = bdrv_primary_bs(bs);
- int ret = -ENOTSUP;
+ int ret;
+
+ ret = bdrv_check_qiov_request(pos, qiov->size, qiov, 0, NULL);
+ if (ret < 0) {
+ return ret;
+ }
if (!drv) {
return -ENOMEDIUM;
@@ -2730,6 +2735,8 @@ bdrv_co_readv_vmstate(BlockDriverState *bs, QEMUIOVector *qiov, int64_t pos)
ret = drv->bdrv_load_vmstate(bs, qiov, pos);
} else if (child_bs) {
ret = bdrv_co_readv_vmstate(child_bs, qiov, pos);
+ } else {
+ ret = -ENOTSUP;
}
bdrv_dec_in_flight(bs);
@@ -2742,7 +2749,12 @@ bdrv_co_writev_vmstate(BlockDriverState *bs, QEMUIOVector *qiov, int64_t pos)
{
BlockDriver *drv = bs->drv;
BlockDriverState *child_bs = bdrv_primary_bs(bs);
- int ret = -ENOTSUP;
+ int ret;
+
+ ret = bdrv_check_qiov_request(pos, qiov->size, qiov, 0, NULL);
+ if (ret < 0) {
+ return ret;
+ }
if (!drv) {
return -ENOMEDIUM;
@@ -2754,6 +2766,8 @@ bdrv_co_writev_vmstate(BlockDriverState *bs, QEMUIOVector *qiov, int64_t pos)
ret = drv->bdrv_save_vmstate(bs, qiov, pos);
} else if (child_bs) {
ret = bdrv_co_writev_vmstate(child_bs, qiov, pos);
+ } else {
+ ret = -ENOTSUP;
}
bdrv_dec_in_flight(bs);
There are only two drivers supporting vmstate: qcow2 and sheepdog. Sheepdog is deprecated. In qcow2 these requests go through .bdrv_co_p{read,write}v_part handlers. So, let's do our basic check for the request on vmstate generic handlers. Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> --- block/io.c | 18 ++++++++++++++++-- 1 file changed, 16 insertions(+), 2 deletions(-)