[PATCH 2/2] powerpc: If kexec_build_elf_info() fails return immediately from elf64_load()

[Michael Ellerman]

Lakshmi Ramasubramanian <nramas at linux.microsoft.com> writes:

> Uninitialized local variable "elf_info" would be passed to
> kexec_free_elf_info() if kexec_build_elf_info() returns an error
> in elf64_load().
>
> If kexec_build_elf_info() returns an error, return the error
> immediately.
>
> Signed-off-by: Lakshmi Ramasubramanian <nramas at linux.microsoft.com>
> Reported-by: Dan Carpenter <dan.carpenter at oracle.com>

Reviewed-by: Michael Ellerman <mpe at ellerman.id.au>

cheers

> diff --git a/arch/powerpc/kexec/elf_64.c b/arch/powerpc/kexec/elf_64.c
> index 02662e72c53d..eeb258002d1e 100644
> --- a/arch/powerpc/kexec/elf_64.c
> +++ b/arch/powerpc/kexec/elf_64.c
> @@ -45,7 +45,7 @@ static void *elf64_load(struct kimage *image, char *kernel_buf,
>  
>  	ret = kexec_build_elf_info(kernel_buf, kernel_len, &ehdr, &elf_info);
>  	if (ret)
> -		goto out;
> +		return ERR_PTR(ret);
>  
>  	if (image->type == KEXEC_TYPE_CRASH) {
>  		/* min & max buffer values for kdump case */
> -- 
> 2.31.0