From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 3147 invoked by alias); 3 Aug 2012 01:48:12 -0000 Received: (qmail 3138 invoked by uid 22791); 3 Aug 2012 01:48:12 -0000 X-SWARE-Spam-Status: No, hits=-6.3 required=5.0 tests=AWL,BAYES_00,KHOP_RCVD_UNTRUST,RCVD_IN_DNSWL_HI,RCVD_IN_HOSTKARMA_W,SPF_HELO_PASS,T_RP_MATCHES_RCVD X-Spam-Check-By: sourceware.org Received: from mx1.redhat.com (HELO mx1.redhat.com) (209.132.183.28) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Fri, 03 Aug 2012 01:47:53 +0000 Received: from int-mx01.intmail.prod.int.phx2.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id q731lN6T008950 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Thu, 2 Aug 2012 21:47:24 -0400 Received: from psique (ovpn-113-52.phx2.redhat.com [10.3.113.52]) by int-mx01.intmail.prod.int.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id q731lIll011719; Thu, 2 Aug 2012 21:47:19 -0400 From: Sergio Durigan Junior To: Pedro Alves Cc: Edjunior Barbosa Machado , Jan Kratochvil , Philippe Waroquiers , Joel Brobecker , gdb-patches@sourceware.org, "Maciej W. Rozycki" , Tom Tromey Subject: Re: [commit+7.5] [patchv2] Write bpt at the ON_STACK bpt address References: <5012B1B6.1030003@redhat.com> <1343339398.2258.119.camel@soleil> <20120727184633.GA14182@host2.jankratochvil.net> <20120731073643.GA18696@host2.jankratochvil.net> <501B03E4.1020209@linux.vnet.ibm.com> <501B2271.6030406@redhat.com> X-URL: http://www.redhat.com Date: Fri, 03 Aug 2012 01:48:00 -0000 In-Reply-To: <501B2271.6030406@redhat.com> (Pedro Alves's message of "Fri, 03 Aug 2012 01:59:29 +0100") Message-ID: User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/23.3 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-IsSubscribed: yes 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 X-SW-Source: 2012-08/txt/msg00094.txt.bz2 On Thursday, August 02 2012, Pedro Alves wrote: >>> Program received signal SIGTRAP, Trace/breakpoint trap. >>> ../../gdb.git/gdb/frame.c:2396: internal-error: frame_cleanup_after_sniffer: Assertion `frame->prologue_cache == NULL' failed. >>> A problem internal to GDB has been detected, >>> FAIL: gdb.base/valgrind-infcall.exp: continue (GDB internal error) >>> further debugging may prove unreliable. >>> Quit this debugging session? (y or n) n >>> >>> With this error, gdb connection is closed and the testsuite gets stuck >>> at this point. >> >> (Adding Tom to CC list). >> >> Thanks for the report. >> >> Just as an FYI (or For Our Information, rather), >> http://sourceware.org/ml/gdb-patches/2012-08/msg00075.html clearly fixes >> the bug. I will keep an eye on this since I am interested as well. > > Curious. But is the cause the same? If something sending C-c to gdb at the "wrong" time? Not sure, but apparently not. I just wanted to make the relation between the patch and the problem clear. It is also worth noting that the patch fixes only the internal error, but some failures still occur, which is something else to be investigated. -- Sergio