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conf: fix crash when hotplug a channel chr device with no target

Browse Source 
https://bugzilla.redhat.com/show_bug.cgi?id=1181408

When we try to hotplug a channel chr device with no target, we
will get success (which should fail) in virDomainChrDefParseXML,
because we use goto cleanup this place and return an incomplete
definition (with no target). In qemuDomainAttachChrDevice,
we add it to the domain definition, but fail to remove it from
there when chardev-add fails, because virDomainChrRemove
matches chardevices according to the target name.
The device definition is then freed in qemuDomainAttachDeviceFlags,
leaving a stale pointer in the domain definition.

Signed-off-by: Luyao Huang <lhuang@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
(cherry picked from commit fba7173f72)
Signed-off-by: Ján Tomko <jtomko@redhat.com>
This commit is contained in:
Luyao Huang 2015-01-13 16:41:05 +08:00 committed by Ján Tomko
parent 12496319a2
commit 5443a58d6b
1 changed files with 1 additions and 1 deletions
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2
src/conf/domain_conf.c
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@ -8138,7 +8138,7 @@ virDomainChrDefParseXML(xmlXPathContextPtr ctxt,
if (!seenTarget &&
((def->targetType = virDomainChrDefaultTargetType(def->deviceType)) < 0))
goto cleanup;
goto error;
if (virDomainChrSourceDefParseXML(&def->source, node->children, flags, def,
ctxt, vmSeclabels, nvmSeclabels) < 0)