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From 3e97a22728afed3c77140486ec3863eba941535b Mon Sep 17 00:00:00 2001
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From: Michael S. Tsirkin <mst@redhat.com>
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Date: Mon, 13 Jan 2014 13:45:57 +0100
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Subject: [PATCH 11/16] qdev-monitor: Fix crash when device_add is called with abstract driver
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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RH-Author: Michael S. Tsirkin <mst@redhat.com>
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Message-id: <1389620557-30050-1-git-send-email-mst@redhat.com>
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Patchwork-id: 56642
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O-Subject: [PATCH qemu-kvm RHEL7.0] qdev-monitor: Fix crash when device_add is called with abstract driver
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Bugzilla: 1026712
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RH-Acked-by: Amos Kong <akong@redhat.com>
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RH-Acked-by: Marcel Apfelbaum <marcel.a@redhat.com>
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RH-Acked-by: Markus Armbruster <armbru@redhat.com>
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RH-Acked-by: Igor Mammedov <imammedo@redhat.com>
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From: Igor Mammedov <imammedo@redhat.com>
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User is able to crash running QEMU when following monitor
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command is called:
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device_add intel-hda-generic
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Crash is caused by assertion in object_initialize_with_type()
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when type is abstract.
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Checking if type is abstract before instance is created in
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qdev_device_add() allows to prevent crash on incorrect user input.
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Cc: qemu-stable@nongnu.org
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Signed-off-by: Igor Mammedov <imammedo@redhat.com>
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Signed-off-by: Andreas Färber <afaerber@suse.de>
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(cherry picked from commit 2fa4e56d88aa0039062bbc7f9a88e9f90c77ed94)
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Conflicts:
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qdev-monitor.c
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Brew build: http://brewweb.devel.redhat.com/brew/taskinfo?taskID=6859928
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Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1046007
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---
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qdev-monitor.c | 6 ++++++
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1 file changed, 6 insertions(+)
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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---
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qdev-monitor.c | 6 ++++++
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1 files changed, 6 insertions(+), 0 deletions(-)
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diff --git a/qdev-monitor.c b/qdev-monitor.c
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index f78ff64..979502e 100644
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--- a/qdev-monitor.c
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+++ b/qdev-monitor.c
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@@ -477,6 +477,12 @@ DeviceState *qdev_device_add(QemuOpts *opts)
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}
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}
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+ if (object_class_is_abstract(obj)) {
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+ qerror_report(QERR_INVALID_PARAMETER_VALUE, "driver",
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+ "non-abstract device type");
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+ return NULL;
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+ }
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+
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k = DEVICE_CLASS(obj);
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if (!k || k->cannot_instantiate_with_device_add_yet) {
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--
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1.7.1
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