Fix memory issues

src/direct/direct-export-buf.c

@@ -172,10 +172,11 @@ static BackingImage *direct_allocateBackingImage(NVDriver *drv, NVSurface *surfa
         goto import_fail;
     }
 
-    close(memFd);
     close(memFd2);
-    memFd = -1;
     memFd2 = -1;
+    // memFd file descriptor is closed by CUDA after importing
+    memFd = -1;
+
 
     //now map the arrays
     for (uint32_t i = 0; i < fmtInfo->numPlanes; i++) {
@@ -216,15 +217,18 @@ static BackingImage *direct_allocateBackingImage(NVDriver *drv, NVSurface *surfa
 
 bail:
     destroyBackingImage(drv, backingImage);
+    //another 'free' might occur on this pointer.
+    //hence, set it to NULL to ensure no operation is performed if this really happens.
+    backingImage = NULL;
 
 import_fail:
-    if (memFd != 0) {
+    if (memFd >= 0) {
         close(memFd);
     }
-    if (memFd != 0) {
-        close(memFd);
+    if (memFd2 >= 0) {
+        close(memFd2);
     }
-    if (drmFd != 0) {
+    if (drmFd >= 0) {
         close(drmFd);
     }
     free(backingImage);

src/list.c

@@ -21,11 +21,7 @@ static void ensure_capacity(Array *arr, uint32_t new_capacity) {
         }
     }
 
-    if (arr->buf == NULL) {
-        arr->buf = malloc(arr->capacity * sizeof(void*));
-    } else {
-        arr->buf = realloc(arr->buf, arr->capacity * sizeof(void*));
-    }
+    arr->buf = realloc(arr->buf, arr->capacity * sizeof(void*));
 
     //clear the new part of the array
     memset(&arr->buf[old_capacity], 0, (arr->capacity - old_capacity) * sizeof(void*));

src/vabackend.c

@@ -308,9 +308,7 @@ static void deleteObject(NVDriver *drv, VAGenericID id) {
     ARRAY_FOR_EACH(Object, o, &drv->objects)
         if (o->id == id) {
             remove_element_at(&drv->objects, o_idx);
-            if (o->obj != NULL) {
-                free(o->obj);
-            }
+            free(o->obj);
             free(o);
             //we've found the object, no need to continue
             break;
@@ -2114,6 +2112,8 @@ static VAStatus nvTerminate( VADriverContextP ctx )
     CHECK_CUDA_RESULT_RETURN(cu->cuCtxDestroy(drv->cudaContext), VA_STATUS_ERROR_OPERATION_FAILED);
     drv->cudaContext = NULL;
 
+    free(drv);
+
     return VA_STATUS_SUCCESS;
 }