Re: [PATCH] MdeModulePkg PiSmmCore: Ensure SxDispatch not NULL before dereferenced

["Wu, Hao A" <hao.a.wu@intel.com>]

Reviewed-by: Hao Wu <hao.a.wu@intel.com>

Best Regards,
Hao Wu


> -----Original Message-----
> From: Zeng, Star
> Sent: Wednesday, December 13, 2017 11:28 AM
> To: edk2-devel@lists.01.org
> Cc: Zeng, Star; Wu, Hao A; Yao, Jiewen
> Subject: [PATCH] MdeModulePkg PiSmmCore: Ensure SxDispatch not NULL
> before dereferenced
> 
> Cc: Hao Wu <hao.a.wu@intel.com>
> Cc: Jiewen Yao <jiewen.yao@intel.com>
> Contributed-under: TianoCore Contribution Agreement 1.1
> Signed-off-by: Star Zeng <star.zeng@intel.com>
> ---
>  MdeModulePkg/Core/PiSmmCore/PiSmmCore.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/MdeModulePkg/Core/PiSmmCore/PiSmmCore.c
> b/MdeModulePkg/Core/PiSmmCore/PiSmmCore.c
> index 1ccb9c7787ad..f136b5d5693b 100644
> --- a/MdeModulePkg/Core/PiSmmCore/PiSmmCore.c
> +++ b/MdeModulePkg/Core/PiSmmCore/PiSmmCore.c
> @@ -321,7 +321,7 @@ SmmReadyToBootHandler (
>               NULL,
>               (VOID **)&SxDispatch
>               );
> -  if (!EFI_ERROR (Status)) {
> +  if (!EFI_ERROR (Status) && (SxDispatch != NULL)) {
>      //
>      // Register a S3 entry callback function to
>      // determine if it will be during S3 resume.
> --
> 2.7.0.windows.1