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Fri, 20 Apr 2018 12:07:01 -0400 Received: from mail-yw0-f194.google.com ([209.85.161.194]:46951 "EHLO mail-yw0-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755655AbeDTQHA (ORCPT ); Fri, 20 Apr 2018 12:07:00 -0400 X-Google-Smtp-Source: AIpwx4/cg/d1360l2PsVyIJbcn/7YypUsV3eISZqAdGbFu4RZ2gXgsxL/5imlvKZaRoFGgC607yDFmEIjlYB09SF8Ak= MIME-Version: 1.0 In-Reply-To: <20180420143811.9994-21-ebiederm@xmission.com> References: <87604mhrnb.fsf@xmission.com> <20180420143811.9994-21-ebiederm@xmission.com> From: Max Filippov Date: Fri, 20 Apr 2018 09:06:59 -0700 Message-ID: Subject: Re: [REVIEW][PATCH 21/22] signal/xtensa: Consistenly use SIGBUS in do_unaligned_user To: "Eric W. Biederman" Cc: Linux-Arch , LKML , Chris Zankel , linux-xtensa@linux-xtensa.org, stable@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Sender: stable-owner@vger.kernel.org X-Mailing-List: stable@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: On Fri, Apr 20, 2018 at 7:38 AM, Eric W. Biederman 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 > Cc: Max Filippov > Cc: linux-xtensa@linux-xtensa.org > Cc: stable@vger.kernel.org > Fixes: 5a0015d62668 ("[PATCH] xtensa: Architecture support for Tensilica Xtensa Part 3") > Signed-off-by: "Eric W. Biederman" > --- > arch/xtensa/kernel/traps.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) Acked-by: Max Filippov -- Thanks. -- Max