On Sat, Mar 02, 2019 at 09:24:21PM +0100, Thomas Deutschmann wrote:
> Hi,
>
> please backport
>
> > powerpc: Always initialize input array when calling epapr_hypercall()
> > Several callers to epapr_hypercall() pass an uninitialized stack
> > allocated array for the input arguments, presumably because they
> > have no input arguments. However this can produce errors like
> > this one
> >
> > arch/powerpc/include/asm/epapr_hcalls.h:470:42: error: 'in' may be used uninitialized in this function [-Werror=maybe-uninitialized]
> > unsigned long register r3 asm("r3") = in[0];
> > ~~^~~
> >
> > Fix callers to this function to always zero-initialize the input
> > arguments array to prevent this.
> >
> > Signed-off-by: Seth Forshee <seth.forshee@xxxxxxxxxxxxx>
> > Signed-off-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
>
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=186b8f1587c79c2fa04bfa392fdf084443e398c1
>
> to
>
> - 4.14.x
> - 4.9.x
> - 4.4.x
>
>
> Downstream-Bug: https://bugs.gentoo.org/675334
It's already queued up for the next round of stable releases, no need to
ask again :)
thanks,
greg k-h
