[PATCH 1/2] Always free the device in AttachChrDevice

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Do not free it in the caller (qemuDomainAttachDeviceFlags),
because it has no way of knowing if it hasn't been cleaned
up by qemuProcessStop on monitor EOF.

https://bugzilla.redhat.com/show_bug.cgi?id=1161024
---
 src/qemu/qemu_driver.c  |  3 +--
 src/qemu/qemu_hotplug.c | 14 ++++++++++----
 tests/qemuhotplugtest.c |  1 +
 3 files changed, 12 insertions(+), 6 deletions(-)

diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index ee5e4f5..333b2bf 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -6997,8 +6997,7 @@ qemuDomainAttachDeviceLive(virDomainObjPtr vm,
     case VIR_DOMAIN_DEVICE_CHR:
         ret = qemuDomainAttachChrDevice(driver, vm,
                                         dev->data.chr);
-        if (!ret)
-            dev->data.chr = NULL;
+        dev->data.chr = NULL;
         break;
 
     case VIR_DOMAIN_DEVICE_NONE:
diff --git a/src/qemu/qemu_hotplug.c b/src/qemu/qemu_hotplug.c
index 62a9cba..f4eca30 100644
--- a/src/qemu/qemu_hotplug.c
+++ b/src/qemu/qemu_hotplug.c
@@ -1484,18 +1484,19 @@ int qemuDomainAttachChrDevice(virQEMUDriverPtr driver,
     char *devstr = NULL;
     char *charAlias = NULL;
     bool need_remove = false;
+    bool need_free = true;
 
     if (!virQEMUCapsGet(priv->qemuCaps, QEMU_CAPS_DEVICE)) {
         virReportError(VIR_ERR_OPERATION_INVALID, "%s",
                        _("qemu does not support -device"));
-        return ret;
+        goto cleanup;
     }
 
     if (qemuAssignDeviceChrAlias(vmdef, chr, -1) < 0)
-        return ret;
+        goto cleanup;
 
     if (qemuBuildChrDeviceStr(&devstr, vm->def, chr, priv->qemuCaps) < 0)
-        return ret;
+        goto cleanup;
 
     if (virAsprintf(&charAlias, "char%s", chr->info.alias) < 0)
         goto cleanup;
@@ -1503,6 +1504,7 @@ int qemuDomainAttachChrDevice(virQEMUDriverPtr driver,
     if (qemuDomainChrInsert(vmdef, chr) < 0)
         goto cleanup;
     need_remove = true;
+    need_free = false;
 
     qemuDomainObjEnterMonitor(driver, vm);
     if (qemuMonitorAttachCharDev(priv->mon, charAlias, &chr->source) < 0) {
@@ -1534,8 +1536,12 @@ int qemuDomainAttachChrDevice(virQEMUDriverPtr driver,
  audit:
     virDomainAuditChardev(vm, NULL, chr, "attach", ret == 0);
  cleanup:
-    if (ret < 0 && need_remove)
+    if (ret < 0 && need_remove) {
         qemuDomainChrRemove(vmdef, chr);
+        need_free = true;
+    }
+    if (need_free)
+        virDomainChrDefFree(chr);
     VIR_FREE(charAlias);
     VIR_FREE(devstr);
     return ret;
diff --git a/tests/qemuhotplugtest.c b/tests/qemuhotplugtest.c
index 12a7f71..c914004 100644
--- a/tests/qemuhotplugtest.c
+++ b/tests/qemuhotplugtest.c
@@ -114,6 +114,7 @@ testQemuHotplugAttach(virDomainObjPtr vm,
         break;
     case VIR_DOMAIN_DEVICE_CHR:
         ret = qemuDomainAttachChrDevice(&driver, vm, dev->data.chr);
+        dev->data.chr = NULL;
         break;
     default:
         if (virTestGetVerbose())
-- 
2.0.5

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