Signed-off-by: David Ahern <dsah...@gmail.com>
Cc: Arnaldo Carvalho de Melo <a...@ghostprotocols.net>
Cc: Ingo Molnar <mi...@kernel.org>
Cc: Frederic Weisbecker <fweis...@gmail.com>
Cc: Peter Zijlstra <pet...@infradead.org>
Cc: Xiao Guangrong <xiaoguangr...@linux.vnet.ibm.com>
Cc: Dong Hao <haod...@linux.vnet.ibm.com>
---
 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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