[libvirt] [PATCH] qemu: Fix serial stub console allocation

[Erik Skultety]

When adding the aliased serial stub console, the structure wasn't
properly allocated (VIR_ALLOC instead of virDomainChrDefNew) which then
resulted in SIGSEGV in virDomainChrSourceIsEqual during a serial device
coldplug.

https://bugzilla.redhat.com/show_bug.cgi?id=1434278

Signed-off-by: Erik Skultety <eskultet at redhat.com>
---
 src/qemu/qemu_hotplug.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/qemu/qemu_hotplug.c b/src/qemu/qemu_hotplug.c
index 4a7d99725..34ddb95f8 100644
--- a/src/qemu/qemu_hotplug.c
+++ b/src/qemu/qemu_hotplug.c
@@ -1810,7 +1810,7 @@ qemuDomainChrPreInsert(virDomainDefPtr vmdef,
         if (!vmdef->consoles && VIR_ALLOC(vmdef->consoles) < 0)
             return -1;
 
-        if (VIR_ALLOC(vmdef->consoles[0]) < 0) {
+        if (!(vmdef->consoles[0] = virDomainChrDefNew(NULL))) {
             VIR_FREE(vmdef->consoles);
             return -1;
         }
@@ -1841,7 +1841,7 @@ qemuDomainChrInsertPreAllocCleanup(virDomainDefPtr vmdef,
     /* Remove the stub console added by qemuDomainChrPreInsert */
     if (vmdef->nserials == 0 && vmdef->nconsoles == 1 &&
         chr->deviceType == VIR_DOMAIN_CHR_DEVICE_TYPE_SERIAL) {
-        VIR_FREE(vmdef->consoles[0]);
+        virDomainChrDefFree(vmdef->consoles[0]);
         VIR_FREE(vmdef->consoles);
         vmdef->nconsoles = 0;
     }
-- 
2.13.0