From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 88511 invoked by alias); 29 Mar 2016 18:12:38 -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 88487 invoked by uid 89); 29 Mar 2016 18:12:38 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-2.9 required=5.0 tests=BAYES_00,RP_MATCHES_RCVD,SPF_HELO_PASS autolearn=ham version=3.3.2 spammy=all, all!, H*Ad:U*jistone 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; Tue, 29 Mar 2016 18:12:28 +0000 Received: from int-mx11.intmail.prod.int.phx2.redhat.com (int-mx11.intmail.prod.int.phx2.redhat.com [10.5.11.24]) by mx1.redhat.com (Postfix) with ESMTPS id DF94D64373; Tue, 29 Mar 2016 18:12:26 +0000 (UTC) Received: from [10.3.113.104] (ovpn-113-104.phx2.redhat.com [10.3.113.104]) by int-mx11.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id u2TICOSg028953; Tue, 29 Mar 2016 14:12:25 -0400 Subject: Re: [PATCH v4] Implement 'catch syscall' for gdbserver To: Yao Qi References: <1449196006-13759-2-git-send-email-jistone@redhat.com> <1452308954-13679-1-git-send-email-jistone@redhat.com> <5694EC0E.2080904@redhat.com> <56954F8C.6010100@redhat.com> <56955283.1060502@redhat.com> <56955B84.7050905@redhat.com> <86mvphs6kv.fsf@gmail.com> Cc: Pedro Alves , gdb-patches@sourceware.org, philippe.waroquiers@skynet.be, sergiodj@redhat.com, eliz@gnu.org, xdje42@gmail.com, scox@redhat.com From: Josh Stone Message-ID: <56FAC588.6060200@redhat.com> Date: Tue, 29 Mar 2016 18:12:00 -0000 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.7.1 MIME-Version: 1.0 In-Reply-To: <86mvphs6kv.fsf@gmail.com> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-SW-Source: 2016-03/txt/msg00527.txt.bz2 On 03/29/2016 07:26 AM, Yao Qi wrote: > Hi Josh, > This commit causes some fails on s39x, and ppc, as shown in buildbot. I > saw them in aarch64 test as well. Could you take a look? > > https://sourceware.org/ml/gdb-testers/2016-q1/msg01544.html > https://sourceware.org/ml/gdb-testers/2016-q1/msg01601.html Hmm. That new test is meant to make sure that the syscall entry/return state is not lost across an execve. In the failure I knew, the execve return was interpreted as an additional syscall entry. But in the cases you've shown, it didn't catch syscall return from execve at all! I will investigate more... Josh