util: handle failed mapping in u_upload_alloc()

Reviewed-by: José Fonseca <jfonseca@vmware.com>

diff --git a/src/gallium/auxiliary/util/u_upload_mgr.c b/src/gallium/auxiliary/util/u_upload_mgr.c
index aef4d40..a2319d0 100644 (file)
--- a/src/gallium/auxiliary/util/u_upload_mgr.c
+++ b/src/gallium/auxiliary/util/u_upload_mgr.c
@@ -187,6 +187,11 @@ enum pipe_error u_upload_alloc( struct u_upload_mgr *upload,
                                          PIPE_TRANSFER_FLUSH_EXPLICIT |
                                          PIPE_TRANSFER_UNSYNCHRONIZED,
                                          &upload->transfer);
+      if (!upload->map) {
+         pipe_resource_reference(outbuf, NULL);
+         *ptr = NULL;
+         return PIPE_ERROR_OUT_OF_MEMORY;
+      }
    }
 
    assert(offset < upload->buffer->width0);