From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 40607 invoked by alias); 10 Apr 2015 08:50:56 -0000 Mailing-List: contact gdb-patches-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: gdb-patches-owner@sourceware.org Received: (qmail 40591 invoked by uid 89); 10 Apr 2015 08:50:55 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-1.9 required=5.0 tests=AWL,BAYES_00,SPF_HELO_PASS,SPF_PASS,T_RP_MATCHES_RCVD autolearn=ham version=3.3.2 X-HELO: mx1.redhat.com Received: from mx1.redhat.com (HELO mx1.redhat.com) (209.132.183.28) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with (AES256-GCM-SHA384 encrypted) ESMTPS; Fri, 10 Apr 2015 08:50:54 +0000 Received: from int-mx13.intmail.prod.int.phx2.redhat.com (int-mx13.intmail.prod.int.phx2.redhat.com [10.5.11.26]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id t3A8oq32025208 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Fri, 10 Apr 2015 04:50:52 -0400 Received: from [127.0.0.1] (ovpn01.gateway.prod.ext.ams2.redhat.com [10.39.146.11]) by int-mx13.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id t3A8oo6U013932; Fri, 10 Apr 2015 04:50:51 -0400 Message-ID: <55278EEA.7000508@redhat.com> Date: Fri, 10 Apr 2015 08:50:00 -0000 From: Pedro Alves User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.5.0 MIME-Version: 1.0 To: Yao Qi CC: gdb-patches@sourceware.org Subject: Re: [PATCH v2 00/23] All-stop on top of non-stop References: <1428410990-28560-1-git-send-email-palves@redhat.com> <86mw2jvtqk.fsf@gmail.com> <55250048.9050801@redhat.com> <86h9sov0iv.fsf@gmail.com> In-Reply-To: <86h9sov0iv.fsf@gmail.com> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-SW-Source: 2015-04/txt/msg00366.txt.bz2 On 04/10/2015 09:40 AM, Yao Qi wrote: > Pedro Alves writes: > >>> 3, on native, >>> -PASS: gdb.base/info-shared.exp: continue to breakpoint: library function #4 >>> +FAIL: gdb.base/info-shared.exp: continue to breakpoint: library function #4 >>> >>> continue^M >>> Continuing.^M >>> ^M >>> Program received signal SIGSEGV, Segmentation fault.^M >>> 0x40021564 in ?? () gdb/testsuite/gdb.base/info-shared-solib1.so^M >>> (gdb) FAIL: gdb.base/info-shared.exp: continue to breakpoint: >>> library function #4 >> >> Most of the SIGSEGV/SIGILL/SIGBUS inferior crashes I saw were >> due to a displaced stepping bug. Force disabling displaced >> stepping with "set displaced off" usually "fixes" it. The next >> step I would usually take would be to run the test manually, with >> "set debug infrun 1" + "set debug displaced 1" + "set debug lin-lwp 1". > > Yeah, it is a bug in displaced stepping... Here is the patch to fix it. Looks great to me. Thanks! Thanks, Pedro Alves