[FFmpeg-cvslog] vulkan: fix crash in ff_vk_shader_free

[Lynne]

ffmpeg | branch: master | Lynne <dev at lynne.ee> | Mon Feb 17 20:07:26 2025 +0100| [1029f51285ecb8ccca7d37b59409cb0f6ba92ed3] | committer: Lynne

vulkan: fix crash in ff_vk_shader_free

The issue is if a shader fails to compile, shd->desc_layout would
not exist, but nb_descriptor_sets would.

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=1029f51285ecb8ccca7d37b59409cb0f6ba92ed3
---

 libavutil/vulkan.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/libavutil/vulkan.c b/libavutil/vulkan.c
index d3ada59334..a868a3b90d 100644
--- a/libavutil/vulkan.c
+++ b/libavutil/vulkan.c
@@ -2595,10 +2595,12 @@ void ff_vk_shader_free(FFVulkanContext *s, FFVulkanShader *shd)
         av_free(set->binding_offset);
     }
 
-    for (int i = 0; i < shd->nb_descriptor_sets; i++)
-        if (shd->desc_layout[i])
-            vk->DestroyDescriptorSetLayout(s->hwctx->act_dev, shd->desc_layout[i],
-                                           s->hwctx->alloc);
+    if (shd->desc_layout) {
+        for (int i = 0; i < shd->nb_descriptor_sets; i++)
+            if (shd->desc_layout[i])
+                vk->DestroyDescriptorSetLayout(s->hwctx->act_dev, shd->desc_layout[i],
+                                               s->hwctx->alloc);
+    }
 
     av_freep(&shd->desc_pool_size);
     av_freep(&shd->desc_layout);