{"id":812862,"url":"http://patchwork.ozlabs.org/api/patches/812862/?format=json","web_url":"http://patchwork.ozlabs.org/project/qemu-devel/patch/20170912140149.7692-3-lvivier@redhat.com/","project":{"id":14,"url":"http://patchwork.ozlabs.org/api/projects/14/?format=json","name":"QEMU Development","link_name":"qemu-devel","list_id":"qemu-devel.nongnu.org","list_email":"qemu-devel@nongnu.org","web_url":"","scm_url":"","webscm_url":"","list_archive_url":"","list_archive_url_format":"","commit_url_format":""},"msgid":"<20170912140149.7692-3-lvivier@redhat.com>","list_archive_url":null,"date":"2017-09-12T14:01:48","name":"[v3,2/3] hmp: fix \"dump-quest-memory\" segfault (arm)","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"a054279de878dc1b0d42093426d24951b596f6c0","submitter":{"id":66421,"url":"http://patchwork.ozlabs.org/api/people/66421/?format=json","name":"Laurent Vivier","email":"lvivier@redhat.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/qemu-devel/patch/20170912140149.7692-3-lvivier@redhat.com/mbox/","series":[{"id":2710,"url":"http://patchwork.ozlabs.org/api/series/2710/?format=json","web_url":"http://patchwork.ozlabs.org/project/qemu-devel/list/?series=2710","date":"2017-09-12T14:01:46","name":"hmp: fix \"dump-quest-memory\" segfault","version":3,"mbox":"http://patchwork.ozlabs.org/series/2710/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/812862/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/812862/checks/","tags":{},"related":[],"headers":{"Return-Path":"","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@bilbo.ozlabs.org","Authentication-Results":["ozlabs.org;\n\tspf=pass (mailfrom) smtp.mailfrom=nongnu.org\n\t(client-ip=2001:4830:134:3::11; helo=lists.gnu.org;\n\tenvelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org;\n\treceiver=)","ext-mx09.extmail.prod.ext.phx2.redhat.com;\n\tdmarc=none (p=none dis=none) header.from=redhat.com","ext-mx09.extmail.prod.ext.phx2.redhat.com;\n\tspf=fail smtp.mailfrom=lvivier@redhat.com"],"Received":["from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11])\n\t(using TLSv1 with cipher AES256-SHA (256/256 bits))\n\t(No client certificate requested)\n\tby ozlabs.org (Postfix) with ESMTPS id 3xs62W60K7z9s7C\n\tfor ;\n\tWed, 13 Sep 2017 00:03:15 +1000 (AEST)","from localhost ([::1]:36054 helo=lists.gnu.org)\n\tby lists.gnu.org with esmtp (Exim 4.71) (envelope-from\n\t)\n\tid 1drlmT-0006im-TU\n\tfor incoming@patchwork.ozlabs.org; Tue, 12 Sep 2017 10:03:13 -0400","from eggs.gnu.org ([2001:4830:134:3::10]:55674)\n\tby lists.gnu.org with esmtp (Exim 4.71)\n\t(envelope-from ) id 1drllV-0006DR-9q\n\tfor qemu-devel@nongnu.org; Tue, 12 Sep 2017 10:02:18 -0400","from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71)\n\t(envelope-from ) id 1drllP-0002ff-Cq\n\tfor qemu-devel@nongnu.org; Tue, 12 Sep 2017 10:02:13 -0400","from mx1.redhat.com ([209.132.183.28]:45002)\n\tby eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32)\n\t(Exim 4.71) (envelope-from )\n\tid 1drllJ-0002Ul-Hd; Tue, 12 Sep 2017 10:02:01 -0400","from smtp.corp.redhat.com\n\t(int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13])\n\t(using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits))\n\t(No client certificate requested)\n\tby mx1.redhat.com (Postfix) with ESMTPS id 6C6F74ACA5;\n\tTue, 12 Sep 2017 14:02:00 +0000 (UTC)","from thinkpad.redhat.com (ovpn-116-239.ams2.redhat.com\n\t[10.36.116.239])\n\tby smtp.corp.redhat.com (Postfix) with ESMTP id BA9D160BEB;\n\tTue, 12 Sep 2017 14:01:57 +0000 (UTC)"],"DMARC-Filter":"OpenDMARC Filter v1.3.2 mx1.redhat.com 6C6F74ACA5","From":"Laurent Vivier ","To":"qemu-devel@nongnu.org","Date":"Tue, 12 Sep 2017 16:01:48 +0200","Message-Id":"<20170912140149.7692-3-lvivier@redhat.com>","In-Reply-To":"<20170912140149.7692-1-lvivier@redhat.com>","References":"<20170912140149.7692-1-lvivier@redhat.com>","X-Scanned-By":"MIMEDefang 2.79 on 10.5.11.13","X-Greylist":"Sender IP whitelisted, not delayed by milter-greylist-4.5.16\n\t(mx1.redhat.com [10.5.110.38]);\n\tTue, 12 Sep 2017 14:02:00 +0000 (UTC)","X-detected-operating-system":"by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic]\n\t[fuzzy]","X-Received-From":"209.132.183.28","Subject":"[Qemu-devel] [PATCH v3 2/3] hmp: fix \"dump-quest-memory\" segfault\n\t(arm)","X-BeenThere":"qemu-devel@nongnu.org","X-Mailman-Version":"2.1.21","Precedence":"list","List-Id":"","List-Unsubscribe":",\n\t","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n\t","Cc":"Laurent Vivier ,\n\tPeter Maydell ,\n\tThomas Huth , Cornelia Huck ,\n\t\"Dr . David Alan Gilbert\" ,\n\tGreg Kurz , qemu-arm@nongnu.org,\n\tqemu-ppc@nongnu.org, David Gibson ","Errors-To":"qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org","Sender":"\"Qemu-devel\"\n\t"},"content":"Running QEMU with\n qemu-system-aarch64 -M none -nographic -m 256\nand executing\n dump-guest-memory /dev/null 0 8192\nresults in segfault\n\nFix by checking if we have CPU, and exit with\nerror if there is no CPU:\n\n (qemu) dump-guest-memory /dev/null\n this feature or command is not currently supported\n\nSigned-off-by: Laurent Vivier \n---\n target/arm/arch_dump.c | 11 +++++++++--\n 1 file changed, 9 insertions(+), 2 deletions(-)","diff":"diff --git a/target/arm/arch_dump.c b/target/arm/arch_dump.c\nindex 1a9861f69b..9e5b2fb31c 100644\n--- a/target/arm/arch_dump.c\n+++ b/target/arm/arch_dump.c\n@@ -273,11 +273,18 @@ int arm_cpu_write_elf32_note(WriteCoreDumpFunction f, CPUState *cs,\n int cpu_get_dump_info(ArchDumpInfo *info,\n const GuestPhysBlockList *guest_phys_blocks)\n {\n- ARMCPU *cpu = ARM_CPU(first_cpu);\n- CPUARMState *env = &cpu->env;\n+ ARMCPU *cpu;\n+ CPUARMState *env;\n GuestPhysBlock *block;\n hwaddr lowest_addr = ULLONG_MAX;\n \n+ if (first_cpu == NULL) {\n+ return -1;\n+ }\n+\n+ cpu = ARM_CPU(first_cpu);\n+ env = &cpu->env;\n+\n /* Take a best guess at the phys_base. If we get it wrong then crash\n * will need '--machdep phys_offset=' added to its command\n * line, which isn't any worse than assuming we can use zero, but being\n","prefixes":["v3","2/3"]}