From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 16771 invoked by alias); 3 Aug 2012 01:00:11 -0000 Received: (qmail 16752 invoked by uid 22791); 3 Aug 2012 01:00:10 -0000 X-SWARE-Spam-Status: No, hits=-7.5 required=5.0 tests=AWL,BAYES_00,KHOP_RCVD_UNTRUST,KHOP_THREADED,RCVD_IN_DNSWL_HI,RCVD_IN_HOSTKARMA_W,SPF_HELO_PASS,TW_VG,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 00:59:52 +0000 Received: from int-mx02.intmail.prod.int.phx2.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id q730xXFB022774 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Thu, 2 Aug 2012 20:59:33 -0400 Received: from [127.0.0.1] (ovpn01.gateway.prod.ext.ams2.redhat.com [10.39.146.11]) by int-mx02.intmail.prod.int.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id q730xTIP029874; Thu, 2 Aug 2012 20:59:30 -0400 Message-ID: <501B2271.6030406@redhat.com> Date: Fri, 03 Aug 2012 01:00:00 -0000 From: Pedro Alves User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:14.0) Gecko/20120717 Thunderbird/14.0 MIME-Version: 1.0 To: Sergio Durigan Junior 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> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit 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/msg00093.txt.bz2 On 08/03/2012 12:09 AM, Sergio Durigan Junior wrote: > On Thursday, August 02 2012, Edjunior Barbosa Machado wrote: > >> On 07/31/2012 04:36 AM, Jan Kratochvil wrote: >>>> gdb/testsuite/ >>>> 2012-07-27 Jan Kratochvil >>>> >>>> * gdb.base/valgrind-infcall.c: New file. >>>> * gdb.base/valgrind-infcall.exp: New file. >> >> I've faced this internal-error when running this testcase on Fedora17 (which has valgrind-3.7.0) on ppc64: >> >> ... >> (gdb) PASS: gdb.base/valgrind-infcall.exp: continue #1 (false warning) >> continue >> Continuing. >> ==7541== Invalid free() / delete / delete[] / realloc() >> ==7541== at 0x40458BC: free (vg_replace_malloc.c:427) >> ==7541== by 0x10000763: main (valgrind-infcall.c:38) >> ==7541== Address 0x4070040 is 0 bytes inside a block of size 1 free'd >> ==7541== at 0x40458BC: free (vg_replace_malloc.c:427) >> ==7541== by 0x10000757: main (valgrind-infcall.c:37) >> ==7541== >> ==7541== (action on error) vgdb me ... >> >> 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? -- Pedro Alves