diff --git a/src/venus/vkr_context.c b/src/venus/vkr_context.c
index 63c79e7..17e7863 100644
--- a/src/venus/vkr_context.c
+++ b/src/venus/vkr_context.c
@@ -267,6 +267,7 @@ vkr_context_submit_cmd(struct virgl_context *base, const void *buffer, size_t si
 static int
 vkr_context_get_blob_locked(struct virgl_context *base,
                             uint64_t blob_id,
+                            UNUSED uint64_t blob_size,
                             uint32_t flags,
                             struct virgl_context_blob *blob)
 {
@@ -356,6 +357,7 @@ vkr_context_get_blob_locked(struct virgl_context *base,
 static int
 vkr_context_get_blob(struct virgl_context *base,
                      uint64_t blob_id,
+                     uint64_t blob_size,
                      uint32_t flags,
                      struct virgl_context_blob *blob)
 {
@@ -363,7 +365,7 @@ vkr_context_get_blob(struct virgl_context *base,
    int ret;
 
    mtx_lock(&ctx->mutex);
-   ret = vkr_context_get_blob_locked(base, blob_id, flags, blob);
+   ret = vkr_context_get_blob_locked(base, blob_id, blob_size, flags, blob);
    /* XXX unlock in vkr_context_get_blob_done on success */
    if (ret)
       mtx_unlock(&ctx->mutex);
diff --git a/src/virgl_context.h b/src/virgl_context.h
index ea86b31..8a7fed2 100644
--- a/src/virgl_context.h
+++ b/src/virgl_context.h
@@ -96,6 +96,7 @@ struct virgl_context {
     */
    int (*get_blob)(struct virgl_context *ctx,
                    uint64_t blob_id,
+                   uint64_t blob_size,
                    uint32_t blob_flags,
                    struct virgl_context_blob *blob);
    void (*get_blob_done)(struct virgl_context *ctx,
diff --git a/src/virglrenderer.c b/src/virglrenderer.c
index 44982d7..9e9cc07 100644
--- a/src/virglrenderer.c
+++ b/src/virglrenderer.c
@@ -877,7 +877,7 @@ int virgl_renderer_resource_create_blob(const struct virgl_renderer_resource_cre
    if (!ctx)
       return -EINVAL;
 
-   ret = ctx->get_blob(ctx, args->blob_id, args->blob_flags, &blob);
+   ret = ctx->get_blob(ctx, args->blob_id, args->size, args->blob_flags, &blob);
    if (ret)
       return ret;
 
diff --git a/src/vrend_decode.c b/src/vrend_decode.c
index 6f5bd86..3f0b9e6 100644
--- a/src/vrend_decode.c
+++ b/src/vrend_decode.c
@@ -1579,6 +1579,7 @@ static int vrend_decode_ctx_transfer_3d(struct virgl_context *ctx,
 
 static int vrend_decode_ctx_get_blob(struct virgl_context *ctx,
                                      uint64_t blob_id,
+                                     UNUSED uint64_t blob_size,
                                      UNUSED uint32_t blob_flags,
                                      struct virgl_context_blob *blob)
 {