[libvirt] [PATCH] qemu: fix operation job association when qemuCaps is NULL.

[jcfaracco at gmail.com]

From: Julio Faracco <jcfaracco at gmail.com>

Function qemuMigrationEatCookie() calls
qemuMigrationCookieXMLParseStr(), when qemuCaps is not set, function
assumes priv as a NULL pointer. At the end, function tries to set
job info operation to the same current job. But, if priv is NULL due to
missing qemuCaps, code returns a Null Pointer Exception. This commit
adds an extra check to verify it.

Signed-off-by: Julio Faracco <jcfaracco at gmail.com>
---
 src/qemu/qemu_migration_cookie.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/qemu/qemu_migration_cookie.c b/src/qemu/qemu_migration_cookie.c
index 25d3fecd74..945b640e2c 100644
--- a/src/qemu/qemu_migration_cookie.c
+++ b/src/qemu/qemu_migration_cookie.c
@@ -1538,7 +1538,8 @@ qemuMigrationEatCookie(virQEMUDriverPtr driver,
         }
     }
 
-    if (flags & QEMU_MIGRATION_COOKIE_STATS && mig->jobInfo)
+    if (flags & QEMU_MIGRATION_COOKIE_STATS && mig->jobInfo &&
+        priv && priv->job.current)
         mig->jobInfo->operation = priv->job.current->operation;
 
     return mig;
-- 
2.20.1