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-rw-r--r--src/gallium/drivers/virgl/virgl_buffer.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/gallium/drivers/virgl/virgl_buffer.c b/src/gallium/drivers/virgl/virgl_buffer.c
index cee26da41b7..4d30c6c340e 100644
--- a/src/gallium/drivers/virgl/virgl_buffer.c
+++ b/src/gallium/drivers/virgl/virgl_buffer.c
@@ -83,6 +83,9 @@ static void virgl_buffer_transfer_unmap(struct pipe_context *ctx,
if (trans->base.usage & PIPE_TRANSFER_WRITE) {
struct virgl_screen *vs = virgl_screen(ctx->screen);
if (transfer->usage & PIPE_TRANSFER_FLUSH_EXPLICIT) {
+ if (trans->range.end <= trans->range.start)
+ goto out;
+
transfer->box.x += trans->range.start;
transfer->box.width = trans->range.end - trans->range.start;
trans->offset = transfer->box.x;
@@ -96,6 +99,7 @@ static void virgl_buffer_transfer_unmap(struct pipe_context *ctx,
}
+out:
virgl_resource_destroy_transfer(vctx, trans);
}