[FFmpeg-devel] [PATCH 3/5] avutil/hwcontext_vulkan: Fix leaks when semaphore creation fails

[Zhao Zhili]

From: Zhao Zhili <zhilizhao at tencent.com>

---
 libavutil/hwcontext_vulkan.c | 30 +++++++++++++++++++-----------
 1 file changed, 19 insertions(+), 11 deletions(-)

diff --git a/libavutil/hwcontext_vulkan.c b/libavutil/hwcontext_vulkan.c
index a84713e621..c64094f31c 100644
--- a/libavutil/hwcontext_vulkan.c
+++ b/libavutil/hwcontext_vulkan.c
@@ -1807,23 +1807,30 @@ static void vulkan_frame_free(AVHWFramesContext *hwfc, AVVkFrame *f)
     VulkanDevicePriv *p = hwfc->device_ctx->internal->priv;
     FFVulkanFunctions *vk = &p->vkctx.vkfn;
     int nb_images = ff_vk_count_images(f);
+    int nb_sems = 0;
+
+    while (nb_sems < FF_ARRAY_ELEMS(f->sem) && f->sem[nb_sems])
+        nb_sems++;
+
+    if (nb_sems) {
+        VkSemaphoreWaitInfo sem_wait = {
+            .sType          = VK_STRUCTURE_TYPE_SEMAPHORE_WAIT_INFO,
+            .flags          = 0x0,
+            .pSemaphores    = f->sem,
+            .pValues        = f->sem_value,
+            .semaphoreCount = nb_sems,
+        };
 
-    VkSemaphoreWaitInfo sem_wait = {
-        .sType          = VK_STRUCTURE_TYPE_SEMAPHORE_WAIT_INFO,
-        .flags          = 0x0,
-        .pSemaphores    = f->sem,
-        .pValues        = f->sem_value,
-        .semaphoreCount = nb_images,
-    };
-
-    vk->WaitSemaphores(hwctx->act_dev, &sem_wait, UINT64_MAX);
+        vk->WaitSemaphores(hwctx->act_dev, &sem_wait, UINT64_MAX);
+    }
 
     vulkan_free_internal(f);
 
     for (int i = 0; i < nb_images; i++) {
         vk->DestroyImage(hwctx->act_dev,     f->img[i], hwctx->alloc);
         vk->FreeMemory(hwctx->act_dev,       f->mem[i], hwctx->alloc);
-        vk->DestroySemaphore(hwctx->act_dev, f->sem[i], hwctx->alloc);
+        if (f->sem[i])
+            vk->DestroySemaphore(hwctx->act_dev, f->sem[i], hwctx->alloc);
     }
 
     av_free(f);
@@ -2098,7 +2105,8 @@ static int create_frame(AVHWFramesContext *hwfc, AVVkFrame **frame,
         if (ret != VK_SUCCESS) {
             av_log(hwctx, AV_LOG_ERROR, "Failed to create semaphore: %s\n",
                    ff_vk_ret2str(ret));
-            return AVERROR_EXTERNAL;
+            err = AVERROR_EXTERNAL;
+            goto fail;
         }
 
         f->queue_family[i] = p->nb_img_qfs > 1 ? VK_QUEUE_FAMILY_IGNORED : p->img_qfs[0];
-- 
2.34.1