linux-kernel - Re: [REVIEW][PATCH 21/22] signal/xtensa: Consistenly use SIGBUS in do_unaligned

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Message-ID: <CAMo8BfLcxvEK4BqteXGGzUNWXS1iRfUtSkO364MjL1URPbpKOQ@mail.gmail.com>
Date:   Fri, 20 Apr 2018 09:06:59 -0700
From:   Max Filippov <jcmvbkbc@...il.com>
To:     "Eric W. Biederman" <ebiederm@...ssion.com>
Cc:     Linux-Arch <linux-arch@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Chris Zankel <chris@...kel.net>, linux-xtensa@...ux-xtensa.org,
        stable@...r.kernel.org
Subject: Re: [REVIEW][PATCH 21/22] signal/xtensa: Consistenly use SIGBUS in do_unaligned_user

On Fri, Apr 20, 2018 at 7:38 AM, Eric W. Biederman
<ebiederm@...ssion.com> wrote:
> While working on changing this code to use force_sig_fault I
> discovered that do_unaliged_user is sets si_signo to SIGBUS and passes
> SIGSEGV to force_sig_info.  Which is just b0rked.
>
> The code is reporting a SIGBUS error so replace the SIGSEGV with SIGBUS.
>
> Cc: Chris Zankel <chris@...kel.net>
> Cc: Max Filippov <jcmvbkbc@...il.com>
> Cc: linux-xtensa@...ux-xtensa.org
> Cc: stable@...r.kernel.org
> Fixes: 5a0015d62668 ("[PATCH] xtensa: Architecture support for Tensilica Xtensa Part 3")
> Signed-off-by: "Eric W. Biederman" <ebiederm@...ssion.com>
> ---
>  arch/xtensa/kernel/traps.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

Acked-by: Max Filippov <jcmvbkbc@...il.com>

-- 
Thanks.
-- Max