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qdev-monitor: Avoid device_add crashing on non-device driver name

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Watch this:

    $ upstream-qemu -nodefaults -S -display none -monitor stdio
    QEMU 1.7.50 monitor - type 'help' for more information
    (qemu) device_add rng-egd
    /work/armbru/qemu/qdev-monitor.c:491:qdev_device_add: Object 0x2089b00 is not an instance of type device
    Aborted (core dumped)

Crashes because "rng-egd" exists, but isn't a subtype of TYPE_DEVICE.
Broken in commit 18b6dad.

Cc: qemu-stable@nongnu.org
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
This commit is contained in:
Markus Armbruster 2013-11-28 17:02:24 +01:00 committed by Andreas Färber
parent 7ea5e78f3d
commit 061e84f7a4
1 changed files with 1 additions and 1 deletions
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2
qdev-monitor.c
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@ -478,7 +478,7 @@ DeviceState *qdev_device_add(QemuOpts *opts)
}
}
if (!oc) {
if (!object_class_dynamic_cast(oc, TYPE_DEVICE)) {
qerror_report(QERR_INVALID_PARAMETER_VALUE, "driver", "device type");
return NULL;
}