linux-kernel - Re: [PATCH 4.19 32/66] xtensa: fix initialization of pt_regs::syscall in start

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Date:   Fri, 10 May 2019 08:24:07 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Max Filippov <jcmvbkbc@...il.com>
Cc:     LKML <linux-kernel@...r.kernel.org>, stable@...r.kernel.org,
        Sasha Levin <sashal@...nel.org>
Subject: Re: [PATCH 4.19 32/66] xtensa: fix initialization of
 pt_regs::syscall in start_thread

On Thu, May 09, 2019 at 11:55:31AM -0700, Max Filippov wrote:
> Hello,
> 
> On Thu, May 9, 2019 at 11:48 AM Greg Kroah-Hartman
> <gregkh@...uxfoundation.org> wrote:
> >
> > [ Upstream commit 2663147dc7465cb29040a05cc4286fdd839978b5 ]
> >
> > New pt_regs should indicate that there's no syscall, not that there's
> > syscall #0. While at it wrap macro body in do/while and parenthesize
> > macro arguments.
> >
> > Signed-off-by: Max Filippov <jcmvbkbc@...il.com>
> > Signed-off-by: Sasha Levin <sashal@...nel.org>
> > ---
> >  arch/xtensa/include/asm/processor.h | 21 ++++++++++++---------
> >  1 file changed, 12 insertions(+), 9 deletions(-)
> 
> This patch should not be taken to any of the stable trees, except maybe
> 5.0.y, because NO_SYSCALL was introduced to arch/xtensa in 5.0.

Now dropped from everywhere except 5.0.y, thanks.

> This patch doesn't have any cc:stable tags, I'm curious why was it chosen
> for stable and what can I do to prevent that in the future?

Sasha's tools picked this up and you should have been cc:ed on it when
it was selected a few weeks ago.

thanks,

greg k-h