[Mesa-stable] [PATCH 2/2] anv: fix potential push constant buffer leaks

[Lionel Landwerlin]

Valgrind stats on
dEQP-VK.pipeline.push_constant.graphics_pipeline.range_size_128 :

Before:
HEAP SUMMARY:
    in use at exit: 2,467,381 bytes in 1,304 blocks
  total heap usage: 697,853 allocs, 696,531 frees, 138,466,600 bytes allocated

LEAK SUMMARY:
   definitely lost: 936 bytes in 10 blocks
   indirectly lost: 24,669 bytes in 412 blocks
     possibly lost: 0 bytes in 0 blocks
   still reachable: 2,441,776 bytes in 882 blocks
        suppressed: 0 bytes in 0 blocks

After:
HEAP SUMMARY:
    in use at exit: 2,467,513 bytes in 1,305 blocks
  total heap usage: 697,853 allocs, 696,530 frees, 138,466,600 bytes allocated

LEAK SUMMARY:
   definitely lost: 1,068 bytes in 11 blocks
   indirectly lost: 24,669 bytes in 412 blocks
     possibly lost: 0 bytes in 0 blocks
   still reachable: 2,441,776 bytes in 882 blocks
        suppressed: 0 bytes in 0 blocks

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin at intel.com>
Cc: "17.2 17.1" <mesa-stable at lists.freedesktop.org>
---
 src/intel/vulkan/anv_cmd_buffer.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/intel/vulkan/anv_cmd_buffer.c b/src/intel/vulkan/anv_cmd_buffer.c
index 2ef7f9bf260..3509acaec0a 100644
--- a/src/intel/vulkan/anv_cmd_buffer.c
+++ b/src/intel/vulkan/anv_cmd_buffer.c
@@ -289,6 +289,10 @@ anv_cmd_buffer_destroy(struct anv_cmd_buffer *cmd_buffer)
          vk_free(&cmd_buffer->pool->alloc, state->push_descriptors[i]);
       }
    }
+   for (uint32_t i = 0; i < MESA_SHADER_STAGES; i++) {
+      if (state->push_constants[i] != NULL)
+         vk_free(&cmd_buffer->pool->alloc, state->push_constants[i]);
+   }
 
    vk_free(&cmd_buffer->pool->alloc, state->attachments);
    vk_free(&cmd_buffer->pool->alloc, cmd_buffer);
-- 
2.14.2