From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 17733 invoked by alias); 26 Sep 2013 19:16:48 -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 17719 invoked by uid 89); 26 Sep 2013 19:16:47 -0000 Received: from mx1.redhat.com (HELO mx1.redhat.com) (209.132.183.28) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with ESMTP; Thu, 26 Sep 2013 19:16:47 +0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-0.9 required=5.0 tests=AWL,BAYES_00,RP_MATCHES_RCVD,SPAM_SUBJECT autolearn=no version=3.3.2 X-HELO: mx1.redhat.com 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 r8QJGFRs025500 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Thu, 26 Sep 2013 15:16:15 -0400 Received: from host2.jankratochvil.net (ovpn-116-66.ams2.redhat.com [10.36.116.66]) by int-mx02.intmail.prod.int.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id r8QJGBYe003246 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=NO); Thu, 26 Sep 2013 15:16:14 -0400 Date: Thu, 26 Sep 2013 19:16:00 -0000 From: Jan Kratochvil To: Markus Metzger Cc: gdb-patches@sourceware.org Subject: v6 crash bugreport [Re: [patch v6 00/21] record-btrace: reverse] Message-ID: <20130926191611.GA13376@host2.jankratochvil.net> References: <1379676639-31802-1-git-send-email-markus.t.metzger@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1379676639-31802-1-git-send-email-markus.t.metzger@intel.com> User-Agent: Mutt/1.5.21 (2010-09-15) X-IsSubscribed: yes X-SW-Source: 2013-09/txt/msg00935.txt.bz2 Hi Markus, ./gdb ./gdb -ex start -ex 'record btrace' -ex stepi -ex 'record instruction-history 0' Segmentation fault Program received signal SIGSEGV, Segmentation fault. 0x000000000089dd86 in btrace_find_insn_by_number (it=0x7fffffffd4c0, btinfo=0x291fc98, number=0) at btrace.c:1243 1243 end = bfun->insn_offset + VEC_length (btrace_insn_s, bfun->insn); (gdb) p bfun $1 = (const struct btrace_function *) 0x0 (I am aware I was asking to reduce the number of NULL checks there.) Thanks, Jan