r600/sfn: fix memory leak related to sh_info->arrays

For instance, with "piglit/bin/shader_runner tests/spec/glsl-1.10/execution/glsl-vs-arrays-2.shader_test -auto -fbo":
Direct leak of 12 byte(s) in 1 object(s) allocated from:
    #0 0x7f33c3f3d097 in operator new[](unsigned long) (/usr/lib64/libasan.so.6+0xb3097)
    #1 0x7f33b9af1e5b in r600::ValueFactory::get_shader_info(r600_shader*) ../src/gallium/drivers/r600/sfn/sfn_valuefactory.cpp:1056
    #2 0x7f33b9a96860 in r600::Shader::get_shader_info(r600_shader*) ../src/gallium/drivers/r600/sfn/sfn_shader.cpp:1445
    #3 0x7f33b99ddd07 in r600_shader_from_nir ../src/gallium/drivers/r600/sfn/sfn_nir.cpp:1032
    #4 0x7f33b9c3e701 in r600_pipe_shader_create ../src/gallium/drivers/r600/r600_shader.c:231

Fixes: 79ca456b4837 ("r600/sfn: rewrite NIR backend")
Signed-off-by: Patrick Lerda <patrick9876@free.fr>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/22262>

diff --git a/src/gallium/drivers/r600/r600_shader.c b/src/gallium/drivers/r600/r600_shader.c
index ed51fa7..b8b8dc4 100644 (file)
--- a/src/gallium/drivers/r600/r600_shader.c
+++ b/src/gallium/drivers/r600/r600_shader.c
@@ -420,6 +420,9 @@ void r600_pipe_shader_destroy(struct pipe_context *ctx UNUSED, struct r600_pipe_
        if (list_is_linked(&shader->shader.bc.cf))
                r600_bytecode_clear(&shader->shader.bc);
        r600_release_command_buffer(&shader->command_buffer);
+
+       if (shader->shader.arrays)
+               free(shader->shader.arrays);
 }
 
 /*

diff --git a/src/gallium/drivers/r600/sfn/sfn_valuefactory.cpp b/src/gallium/drivers/r600/sfn/sfn_valuefactory.cpp
index 3466300..e8088cf 100644 (file)
--- a/src/gallium/drivers/r600/sfn/sfn_valuefactory.cpp
+++ b/src/gallium/drivers/r600/sfn/sfn_valuefactory.cpp
@@ -1053,7 +1053,8 @@ ValueFactory::get_shader_info(r600_shader *sh_info)
    if (!arrays.empty()) {
 
       sh_info->num_arrays = arrays.size();
-      sh_info->arrays = new r600_shader_array[arrays.size()];
+      sh_info->arrays =
+         (r600_shader_array *)malloc(sizeof(struct r600_shader_array) * arrays.size());
 
       for (auto& arr : arrays) {
          sh_info->arrays->gpr_start = arr->sel();