[libvirt] [PATCH] qemu: fix potential memory leak

[Xu Yandong]

function virTypedParamsAddString may return -1 but alloc params,
so invoker should free it.

Signed-off-by: Xu Yandong <xuyandong2 at huawei.com>
---
 src/qemu/qemu_driver.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index 1e041a8bac..62ce7270ca 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -5312,6 +5312,8 @@ qemuDomainPinVcpuLive(virDomainObjPtr vm,
         goto cleanup;
 
     event = virDomainEventTunableNewFromObj(vm, eventParams, eventNparams);
+    eventParams = NULL;
+    eventNparams = 0;
 
     ret = 0;
 
@@ -5320,6 +5322,8 @@ qemuDomainPinVcpuLive(virDomainObjPtr vm,
     virCgroupFree(&cgroup_vcpu);
     VIR_FREE(str);
     virObjectEventStateQueue(driver->domainEventState, event);
+    if (eventParams)
+        virTypedParamsFree(eventParams, eventNparams);
     return ret;
 }
 
@@ -5527,6 +5531,8 @@ qemuDomainPinEmulator(virDomainPtr dom,
             goto endjob;
 
         event = virDomainEventTunableNewFromDom(dom, eventParams, eventNparams);
+        eventParams = NULL;
+        eventNparams = 0;
     }
 
     if (persistentDef) {
@@ -5548,6 +5554,8 @@ qemuDomainPinEmulator(virDomainPtr dom,
  cleanup:
     if (cgroup_emulator)
         virCgroupFree(&cgroup_emulator);
+    if (eventParams)
+        virTypedParamsFree(eventParams, eventNparams);
     virObjectEventStateQueue(driver->domainEventState, event);
     VIR_FREE(str);
     virBitmapFree(pcpumap);
@@ -6012,6 +6020,8 @@ qemuDomainPinIOThread(virDomainPtr dom,
             goto endjob;
 
         event = virDomainEventTunableNewFromDom(dom, eventParams, eventNparams);
+        eventParams = NULL;
+        eventNparams = 0;
     }
 
     if (persistentDef) {
@@ -6043,6 +6053,8 @@ qemuDomainPinIOThread(virDomainPtr dom,
  cleanup:
     if (cgroup_iothread)
         virCgroupFree(&cgroup_iothread);
+    if (eventParams)
+        virTypedParamsFree(eventParams, eventNparams);
     virObjectEventStateQueue(driver->domainEventState, event);
     VIR_FREE(str);
     virBitmapFree(pcpumap);
-- 
2.18.1