Save previous pointer and free on failure.
Signed-off-by: David Ahern <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Frederic Weisbecker <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Xiao Guangrong <[email protected]>
Cc: Dong Hao <[email protected]>
---
tools/perf/builtin-kvm.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/tools/perf/builtin-kvm.c b/tools/perf/builtin-kvm.c
index a23db89..af74a97 100644
--- a/tools/perf/builtin-kvm.c
+++ b/tools/perf/builtin-kvm.c
@@ -327,6 +327,7 @@ static int kvm_events_hash_fn(u64 key)
static bool kvm_event_expand(struct kvm_event *event, int vcpu_id)
{
int old_max_vcpu = event->max_vcpu;
+ void *prev;
if (vcpu_id < event->max_vcpu)
return true;
@@ -334,9 +335,11 @@ static bool kvm_event_expand(struct kvm_event *event, int
vcpu_id)
while (event->max_vcpu <= vcpu_id)
event->max_vcpu += DEFAULT_VCPU_NUM;
+ prev = event->vcpu;
event->vcpu = realloc(event->vcpu,
event->max_vcpu * sizeof(*event->vcpu));
if (!event->vcpu) {
+ free(prev);
pr_err("Not enough memory\n");
return false;
}
--
1.7.10.1
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