anv: Protect memcpy/memset/qsort calls against NULL arguments

Avoids sanitizer errors like:

```
../src/intel/vulkan/anv_pipeline_cache.c:409:4: runtime error: null pointer passed as argument 1, which is declared to never be null
../src/intel/vulkan/anv_descriptor_set.c:696:4: runtime error: null pointer passed as argument 1, which is declared to never be null
../src/intel/vulkan/anv_descriptor_set.c:2709:10: runtime error: null pointer passed as argument 1, which is declared to never be null
../src/intel/vulkan/anv_descriptor_set.c:2709:10: runtime error: null pointer passed as argument 2, which is declared to never be null
```

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/32098>

src/intel/perf/intel_perf.c

@@ -1536,8 +1536,10 @@ intel_perf_init_metrics(struct intel_perf_config *perf_cfg,
       load_oa_metrics(perf_cfg, drm_fd, devinfo);
 
    /* sort query groups by name */
+   if (perf_cfg->queries != NULL) {
       qsort(perf_cfg->queries, perf_cfg->n_queries,
             sizeof(perf_cfg->queries[0]), intel_perf_compare_query_names);
+   }
 
    build_unique_counter_list(perf_cfg);
 

src/intel/vulkan/anv_descriptor_set.c

@@ -693,7 +693,10 @@ VkResult anv_CreateDescriptorSetLayout(
    }
 
    /* Initialize all samplers to 0 */
+   assert((samplers == NULL) == (immutable_sampler_count == 0));
+   if (samplers != NULL) {
       memset(samplers, 0, immutable_sampler_count * sizeof(*samplers));
+   }
 
    uint32_t buffer_view_count = 0;
    uint32_t dynamic_offset_count = 0;
@@ -2699,6 +2702,8 @@ void anv_UpdateDescriptorSets(
           *    - RENDER_SURFACE_STATE
           *    - SAMPLER_STATE
           */
+         assert((dst->desc_surface_mem.map == NULL) == (src->desc_surface_mem.map == NULL));
+         if (dst->desc_surface_mem.map) {
             memcpy(dst->desc_surface_mem.map +
                    dst_layout->descriptor_surface_offset +
                    (copy->dstArrayElement + j) * dst_layout->descriptor_surface_stride,
@@ -2706,6 +2711,10 @@ void anv_UpdateDescriptorSets(
                    src_layout->descriptor_surface_offset +
                    (copy->srcArrayElement + j) * src_layout->descriptor_surface_stride,
                    copy_surface_element_size);
+         }
+
+         assert((dst->desc_sampler_mem.map == NULL) == (src->desc_sampler_mem.map == NULL));
+         if (dst->desc_sampler_mem.map) {
             memcpy(dst->desc_sampler_mem.map +
                    dst_layout->descriptor_sampler_offset +
                    (copy->dstArrayElement + j) * dst_layout->descriptor_sampler_stride,
@@ -2713,6 +2722,7 @@ void anv_UpdateDescriptorSets(
                    src_layout->descriptor_sampler_offset +
                    (copy->srcArrayElement + j) * src_layout->descriptor_sampler_stride,
                    copy_sampler_element_size);
+         }
 
          /* Copy the CPU side data anv_descriptor */
          *dst_desc = *src_desc;

src/intel/vulkan/anv_pipeline_cache.c

@@ -287,7 +287,7 @@ anv_shader_bin_create(struct anv_device *device,
                       INTEL_DEBUG(DEBUG_SHADER_PRINT) ?
                       brw_stage_prog_data_printf_string_size(prog_data_in) : 0);
 
-   if (!vk_multialloc_alloc(&ma, &device->vk.alloc,
+   if (!vk_multialloc_zalloc(&ma, &device->vk.alloc,
                              VK_SYSTEM_ALLOCATION_SCOPE_DEVICE))
       return NULL;
 
@@ -406,14 +406,13 @@ anv_shader_bin_create(struct anv_device *device,
    typed_memcpy(prog_data_relocs, prog_data_in->relocs,
                 prog_data_in->num_relocs);
    prog_data->relocs = prog_data_relocs;
-   memset(prog_data_param, 0,
-          prog_data->nr_params * sizeof(*prog_data_param));
    prog_data->param = prog_data_param;
    prog_data->printf_info = printf_infos;
    shader->prog_data = prog_data;
    shader->prog_data_size = prog_data_size;
 
    assert(num_stats <= ARRAY_SIZE(shader->stats));
+   assert((stats != NULL) || (num_stats == 0));
    typed_memcpy(shader->stats, stats, num_stats);
    shader->num_stats = num_stats;