From: Marek Olšák <maraeo@gmail.com>
Date: Tue, 21 Feb 2012 17:40:11 +0000 (+0100)
Subject: gallium/u_slab: fix possible crash in util_slab_destroy
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=99d5c1a13b97b9133a166c00c9fba1bec5f4bd9e;p=mesa.git

gallium/u_slab: fix possible crash in util_slab_destroy

It may happen if util_slab_create has not been called.

Reviewed-by: Jerome Glisse <jglisse@redhat.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
---

diff --git a/src/gallium/auxiliary/util/u_slab.c b/src/gallium/auxiliary/util/u_slab.c
index 21bf2d735ac..f9f5ef68f3a 100644
--- a/src/gallium/auxiliary/util/u_slab.c
+++ b/src/gallium/auxiliary/util/u_slab.c
@@ -160,9 +160,11 @@ void util_slab_destroy(struct util_slab_mempool *pool)
 {
    struct util_slab_page *page, *temp;
 
-   foreach_s(page, temp, &pool->list) {
-      remove_from_list(page);
-      FREE(page);
+   if (pool->list.next) {
+      foreach_s(page, temp, &pool->list) {
+         remove_from_list(page);
+         FREE(page);
+      }
    }
 
    pipe_mutex_destroy(pool->mutex);