From 9fc616cc101cdf8cd4a4679d2aa6db5ff5455c14 Mon Sep 17 00:00:00 2001
From: Michal Privoznik <mprivozn@redhat.com>
Date: Tue, 6 Aug 2019 13:44:17 +0200
Subject: [PATCH] qemuDomainGetResctrlMonData: Dereference resctrl monitor iff
not NULL
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If the host doesn't have resctrl then the monitor is going to be
NULL and we must avoid dereferencing it.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
---
src/qemu/qemu_driver.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index d5a8beb134..25b6653e38 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -20744,7 +20744,8 @@ qemuDomainGetResctrlMonData(virQEMUDriverPtr driver,
caps = virQEMUDriverGetCapabilities(driver, false);
if (tag == VIR_RESCTRL_MONITOR_TYPE_CACHE) {
- features = caps->host.cache.monitor->features;
+ if (caps->host.cache.monitor)
+ features = caps->host.cache.monitor->features;
} else {
virReportError(VIR_ERR_ARGUMENT_UNSUPPORTED, "%s",
_("Unsupported resctrl monitor type"));