[libvirt] [PATCH 01/12] getstats: avoid memory leak on OOM

[Eric Blake]

qemuDomainGetStatsBlock() could leak a stats hash table if it
encountered OOM while populating the virTypedParameters.
Oddly, the fix doesn't even touch qemuDomainGetStatsBlock :)

* src/qemu/qemu_driver.c (QEMU_ADD_COUNT_PARAM)
(QEMU_ADD_NAME_PARAM): Don't return early.
(qemuDomainGetStatsInterface): Adjust caller.

Signed-off-by: Eric Blake <eblake at redhat.com>
---
 src/qemu/qemu_driver.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index 9152cf5..a7b208f 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -18371,7 +18371,7 @@ do { \
                               maxparams, \
                               param_name, \
                               count) < 0) \
-        return -1; \
+        goto cleanup; \
 } while (0)

 #define QEMU_ADD_NAME_PARAM(record, maxparams, type, num, name) \
@@ -18384,7 +18384,7 @@ do { \
                                 maxparams, \
                                 param_name, \
                                 name) < 0) \
-        return -1; \
+        goto cleanup; \
 } while (0)

 #define QEMU_ADD_NET_PARAM(record, maxparams, num, name, value) \
@@ -18448,6 +18448,7 @@ qemuDomainGetStatsInterface(virQEMUDriverPtr driver ATTRIBUTE_UNUSED,
                            "tx.drop", tmp.tx_drop);
     }

+ cleanup:
     return 0;
 }

-- 
1.9.3