[Mesa-stable] [Mesa-dev] [PATCH] Added NULL check in eglCreateContext

[Valentin Corfu]

I re-submitted the patch according with suggested corrections.

Thank you,
Valentin Corfu


On 29.11.2014 07:53, Matt Turner wrote:
> On Thu, Nov 27, 2014 at 1:59 AM, Valentin Corfu <corfuvalentin at gmail.com> wrote:
>> With this check we can avoid segmentation fault when invalid value used during eglCreateContext.
>>
>> Cc: mesa-stable at lists.freedesktop.org
>> Cc: mesa-dev at lists.freedesktop.org
>> Signed-off-by: Valentin Corfu <valentinx.corfu at intel.com>
>> ---
>>   src/egl/drivers/dri2/egl_dri2.c | 5 +++++
>>   1 file changed, 5 insertions(+)
>>
>> diff --git a/src/egl/drivers/dri2/egl_dri2.c b/src/egl/drivers/dri2/egl_dri2.c
>> index d795a2f..64eac90 100644
>> --- a/src/egl/drivers/dri2/egl_dri2.c
>> +++ b/src/egl/drivers/dri2/egl_dri2.c
>> @@ -808,6 +808,11 @@ dri2_create_context(_EGLDriver *drv, _EGLDisplay *disp, _EGLConfig *conf,
>>
>>      (void) drv;
>>
>> +   if (NULL == conf) {
> Don't do this. conf == NULL is fine.
>
>> +      _eglError(EGL_BAD_PARAMETER, "dri2_create_context");
>> +      return NULL;
>> +   }
>> +
>>      dri2_ctx = malloc(sizeof *dri2_ctx);
>>      if (!dri2_ctx) {
>>         _eglError(EGL_BAD_ALLOC, "eglCreateContext");
>> --
>> 1.9.1
> I don't see any evidence in the spec that eglCreateContext can ever
> return EGL_BAD_PARAMETER.
>
> I do see
>
>> If config is not a valid EGLConfig, or does not support the requested client
>> API , then an EGL_BAD_CONFIG error is generated
> And the patch should be prefixed with "egl: ".