[libvirt] [PATCH 03/11] Fix vm usage after ExitMonitor in UpdateDeviceList

[Ján Tomko]

Error out if the domain has disappeared in the meantime.
Explicitly check if the domain is alive
in qemuDomain{Attach,Detach}Live, where the return value
is ignored.

This prevents writing the persistent definition as the domain
status and calling qemuDomainRemoveDevice on devices
that already have been dealt with in qemuProcessStop.
---
 src/qemu/qemu_domain.c | 3 ++-
 src/qemu/qemu_driver.c | 4 ++++
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
index d074429..d9c22da 100644
--- a/src/qemu/qemu_domain.c
+++ b/src/qemu/qemu_domain.c
@@ -2763,7 +2763,8 @@ qemuDomainUpdateDeviceList(virQEMUDriverPtr driver,
         qemuDomainObjExitMonitor(driver, vm);
         return -1;
     }
-    qemuDomainObjExitMonitor(driver, vm);
+    if (qemuDomainObjExitMonitorAlive(driver, vm) < 0)
+        return -1;
 
     virStringFreeList(priv->qemuDevices);
     priv->qemuDevices = aliases;
diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index 7211d42..99eb7c3 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -7058,6 +7058,8 @@ qemuDomainAttachDeviceLive(virDomainObjPtr vm,
 
     if (ret == 0)
         qemuDomainUpdateDeviceList(driver, vm, QEMU_ASYNC_JOB_NONE);
+    if (!virDomainObjIsActive(vm))
+        return -1;
 
     return ret;
 }
@@ -7134,6 +7136,8 @@ qemuDomainDetachDeviceLive(virDomainObjPtr vm,
 
     if (ret == 0)
         qemuDomainUpdateDeviceList(driver, vm, QEMU_ASYNC_JOB_NONE);
+    if (!virDomainObjIsActive(vm))
+        return -1;
 
     return ret;
 }
-- 
2.0.4