From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from simark.ca by simark.ca with LMTP id SIQ1CFTtmmGKXgAAWB0awg (envelope-from ) for ; Sun, 21 Nov 2021 20:07:32 -0500 Received: by simark.ca (Postfix, from userid 112) id 1ED561F0CE; Sun, 21 Nov 2021 20:07:32 -0500 (EST) X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on simark.ca X-Spam-Level: X-Spam-Status: No, score=-3.9 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,NICE_REPLY_A,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.2 Received: from sourceware.org (server2.sourceware.org [8.43.85.97]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by simark.ca (Postfix) with ESMTPS id A17301E940 for ; Sun, 21 Nov 2021 20:07:31 -0500 (EST) Received: from server2.sourceware.org (localhost [IPv6:::1]) by sourceware.org (Postfix) with ESMTP id B5807385800D for ; Mon, 22 Nov 2021 01:07:30 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org B5807385800D DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sourceware.org; s=default; t=1637543250; bh=po80Eesi5Z7LJIjWd4ByOxedQVfRaBn9vHxZcmaX3Ok=; h=Date:Subject:To:References:In-Reply-To:List-Id:List-Unsubscribe: List-Archive:List-Post:List-Help:List-Subscribe:From:Reply-To:Cc: From; b=sCMPmjlBqpW/+dpVt11buqqiGs4AwhvfjUslBVhMJmdkI99fo54FZWEzi/qp0hBxH BG5e4V9wmNgMT5/CaUQou4Y/cyyCeNpDkeNODnQmYbf5PKVKQ7StPIfcnGRjzxa5QI OB4fPnHXrnKHvZcC0h/8URRf0ASAFdEmwSisFErA= Received: from smtp.polymtl.ca (smtp.polymtl.ca [132.207.4.11]) by sourceware.org (Postfix) with ESMTPS id BE4D93858D3C for ; Mon, 22 Nov 2021 01:07:11 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org BE4D93858D3C Received: from simark.ca (simark.ca [158.69.221.121]) (authenticated bits=0) by smtp.polymtl.ca (8.14.7/8.14.7) with ESMTP id 1AM173HW004797 (version=TLSv1/SSLv3 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Sun, 21 Nov 2021 20:07:09 -0500 DKIM-Filter: OpenDKIM Filter v2.11.0 smtp.polymtl.ca 1AM173HW004797 Received: from [10.0.0.11] (192-222-157-6.qc.cable.ebox.net [192.222.157.6]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by simark.ca (Postfix) with ESMTPSA id 3EDCF1E940; Sun, 21 Nov 2021 20:07:02 -0500 (EST) Message-ID: <3bfb697f-c1e9-618a-03bb-8ea2da5db052@polymtl.ca> Date: Sun, 21 Nov 2021 20:07:02 -0500 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.3.0 Subject: Re: [PATCH] gdb fix for catch-syscall.exp Content-Language: en-US To: Carl Love , Simon Marchi , gdb-patches@sourceware.org References: <3b8e450b9fb4f4bec97a6bfbe6e6a4816be780ee.camel@us.ibm.com> <4d51616392553dd308672f65f18909ebf0513fc0.camel@us.ibm.com> In-Reply-To: <4d51616392553dd308672f65f18909ebf0513fc0.camel@us.ibm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Poly-FromMTA: (simark.ca [158.69.221.121]) at Mon, 22 Nov 2021 01:07:03 +0000 X-BeenThere: gdb-patches@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gdb-patches mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , From: Simon Marchi via Gdb-patches Reply-To: Simon Marchi Cc: Rogerio Alves Errors-To: gdb-patches-bounces+public-inbox=simark.ca@sourceware.org Sender: "Gdb-patches" On 2021-11-19 19:27, Carl Love wrote: > Simon: > > On Thu, 2021-11-18 at 13:10 -0500, Simon Marchi wrote: >> >> Hi Carl, >> >> This patch causes this failure regression on Ubuntu 20.04, amd64: >> >> FAIL: gdb.base/catch-syscall.exp: execve: continue to main >> >> From gdb.log: >> >> 615 continue^M >> 616 Continuing.^M >> 617 process 2022222 is executing new program: >> /home/smarchi/build/binutils- >> gdb/gdb/testsuite/outputs/gdb.base/catch-syscall/catch-syscall^M >> 618 ^M >> 619 Catchpoint 18 (returned from syscall execve), 0x00007ffff7fd0100 >> in _start () from /lib64/ld-linux-x86-64.so.2^M >> 620 (gdb) FAIL: gdb.base/catch-syscall.exp: execve: continue to main >> > > Interesting. I understood that the execve call would not return to the > caller except in the case of an error. Not sure why it behaves > differently on amd64 versus Power and Intel? Let me take a look and > see if I can create a fix with a test multiple to cover both cases. > > Thanks for letting me know. > > Carl > Did you manage to reproduce, or do you need more data from me? Simon