Re: [PATCH 1/2] ppc vdso: make sure rc is defined

[Nathan Lynch <ntl-e+AXbWqSrlAAvxtiuMwx3w@public.gmane.org>]

"Serge E. Hallyn" <serue-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org> writes:
> Signed-off-by: Serge Hallyn <serue-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
> ---
>  arch/powerpc/kernel/vdso.c |    4 +++-
>  1 files changed, 3 insertions(+), 1 deletions(-)
>
> diff --git a/arch/powerpc/kernel/vdso.c b/arch/powerpc/kernel/vdso.c
> index 48beff6..679b394 100644
> --- a/arch/powerpc/kernel/vdso.c
> +++ b/arch/powerpc/kernel/vdso.c
> @@ -240,8 +240,10 @@ int arch_setup_additional_pages(struct linux_binprm *bprm,
>  	}
>  
>  	/* for restart(2), double check that we got we asked for */
> -	if (start && vdso_base != start)
> +	if (start && vdso_base != start) {
> +		rc = -EBUSY;
>  		goto fail_mmapsem;
> +	}
>  
>  	/*
>  	 * our vma flags don't have VM_WRITE so by default, the process isn't

Is this why you sent this patch?

cc1: warnings being treated as errors
arch/powerpc/kernel/vdso.c: In function arch_setup_additional_pages:
arch/powerpc/kernel/vdso.c:194: error: rc may be used uninitialized in this function

If so, looks fine to me.