[libvirt] [PATCH] qemu: require reply from guest agent in qemuAgentGetInterfaces

[Jiri Denemark]

On Thu, Jan 10, 2019 at 10:01:19 +0100, Ján Tomko wrote:
> Since its introduction in commit 0977b8aa071 (released in v1.2.14)
> qemuAgentGetInterfaces calls qemuAgentCommand with needReply=false,
> which allows qemuAgentCommand to return 0 even when it did not get
> any reply from the agent.
> 
> Set needReply to true, since we dereference it right after.
> 
> This can be hit if libvirt is waiting for an event from the agent
> (e.g. shutdown) and the agent cannot reply in time (e.g. due to
> the guest being shut down), as reported in:
> https://bugzilla.redhat.com/show_bug.cgi?id=1663051
> 
> Signed-off-by: Ján Tomko <jtomko at redhat.com>

Reviewed-by: Jiri Denemark <jdenemar at redhat.com>