[PATCH 0/1] MR8885: winevulkan: Handle NULL buffer pointer in vkFreeCommandBuffers().

[PATCH 1/1] winevulkan: Handle NULL buffer pointer in vkFreeCommandBuffers().

[Paul Gofman]

From: Paul Gofman

---
 dlls/winevulkan/loader.c | 2 ++
 dlls/winevulkan/vulkan.c | 6 ++++--
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/dlls/winevulkan/loader.c b/dlls/winevulkan/loader.c
index 644e0982e7a..79bbe8a2758 100644
--- a/dlls/winevulkan/loader.c
+++ b/dlls/winevulkan/loader.c
@@ -697,6 +697,8 @@ void WINAPI vkFreeCommandBuffers(VkDevice device, VkCommandPool cmd_pool, uint32
     assert(!status);
     for (i = 0; i < count; i++)
     {
+        if (!buffers[i])
+            continue;
         list_remove(&buffers[i]->pool_link);
         free(buffers[i]);
     }
diff --git a/dlls/winevulkan/vulkan.c b/dlls/winevulkan/vulkan.c
index ac93931092b..26d3a4b0c10 100644
--- a/dlls/winevulkan/vulkan.c
+++ b/dlls/winevulkan/vulkan.c
@@ -470,12 +470,14 @@ static void wine_vk_free_command_buffers(struct vulkan_device *device,
         struct wine_cmd_pool *pool, uint32_t count, const VkCommandBuffer *buffers)
 {
     struct vulkan_instance *instance = device->physical_device->instance;
+    struct wine_cmd_buffer *buffer;
     unsigned int i;

for (i = 0; i < count; i++)
     {
-        struct wine_cmd_buffer *buffer = wine_cmd_buffer_from_handle(buffers[i]);
-
+        if (!buffers[i])
+            continue;
+        buffer = wine_cmd_buffer_from_handle(buffers[i]);
         if (!buffer)
             continue;

[Paul Gofman (＠gofman)]

From Vulkan spec:
```
VUID-vkFreeCommandBuffers-pCommandBuffers-00048
pCommandBuffers must be a valid pointer to an array of commandBufferCount VkCommandBuffer handles, each element of which must either be a valid handle or NULL
```

So NULL elements of buffers array are allowed and should be handled.