My overnight Coverity run found an issue in the function:
'remoteNetworkBuildEventLifecycle'
On 12/11/2013 05:38 AM, Cédric Bosdonnat wrote:
> ---
> daemon/libvirtd.h | 1 +
> daemon/remote.c | 139 +++++++++++++++++++++++++++++++++++++++++++
> src/remote/remote_driver.c | 127 +++++++++++++++++++++++++++++++++++++++
> src/remote/remote_protocol.x | 46 +++++++++++++-
> 4 files changed, 312 insertions(+), 1 deletion(-)
>
<...snip...>
>
> +static void
> +remoteNetworkBuildEventLifecycle(virNetClientProgramPtr prog ATTRIBUTE_UNUSED,
> + virNetClientPtr client ATTRIBUTE_UNUSED,
> + void *evdata, void *opaque)
> +{
> + virConnectPtr conn = opaque;
> + struct private_data *priv = conn->privateData;
> + remote_network_event_lifecycle_msg *msg = evdata;
> + virNetworkPtr net;
> + virObjectEventPtr event = NULL;
> +
> + net = get_nonnull_network(conn, msg->net);
> + if (!net)
> + return;
> +
4920
(3) Event returned_null: Function "virNetworkEventLifecycleNew(char const *, unsigned char const *, int)" returns null (checked 10 out of 11 times). [details]
(14) Event var_assigned: Assigning: "event" = null return value from "virNetworkEventLifecycleNew(char const *, unsigned char const *, int)".
Also see events: [example_assign][example_checked][example_assign][example_checked][example_assign][example_checked][example_assign][example_checked][example_assign][example_checked][dereference]
4921 event = virNetworkEventLifecycleNew(net->name, net->uuid, msg->event);
> + event = virNetworkEventLifecycleNew(net->name, net->uuid, msg->event);
> + virNetworkFree(net);
> +
(15) Event dereference: Dereferencing a pointer that might be null "event" when calling "remoteDomainEventQueue(struct private_data *, virObjectEventPtr)". [details]
Also see events: [returned_null][example_assign][example_checked][example_assign][example_checked][example_assign][example_checked][example_assign][example_checked][example_assign][example_checked][var_assigned]
> + remoteDomainEventQueue(priv, event);
> +}
> +
> +
Essentially - you need to check for NULL event.
John
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