perf kvm: Fill in the missing session freeing after an error occurs

When an error occurs an error value is just returned without freeing the
session. So allocating and freeing session have to be matched as a pair
even if an error occurs.

Signed-off-by: Taeung Song <treeze.taeung@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: http://lkml.kernel.org/r/1435677525-28055-1-git-send-email-treeze.taeung@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/builtin-kvm.c b/tools/perf/builtin-kvm.c
index 74878cd75078055e437396fc9a6b201603586076..fc1cffb1b7a28c9b0d9856770530a0e8b3bf9606 100644 (file)
--- a/tools/perf/builtin-kvm.c
+++ b/tools/perf/builtin-kvm.c
@@ -1061,8 +1061,10 @@ static int read_events(struct perf_kvm_stat *kvm)
 
        symbol__init(&kvm->session->header.env);
 
-       if (!perf_session__has_traces(kvm->session, "kvm record"))
-               return -EINVAL;
+       if (!perf_session__has_traces(kvm->session, "kvm record")) {
+               ret = -EINVAL;
+               goto out_delete;
+       }
 
        /*
         * Do not use 'isa' recorded in kvm_exit tracepoint since it is not
@@ -1070,9 +1072,13 @@ static int read_events(struct perf_kvm_stat *kvm)
         */
        ret = cpu_isa_config(kvm);
        if (ret < 0)
-               return ret;
+               goto out_delete;
 
-       return perf_session__process_events(kvm->session);
+       ret = perf_session__process_events(kvm->session);
+
+out_delete:
+       perf_session__delete(kvm->session);
+       return ret;
 }
 
 static int parse_target_str(struct perf_kvm_stat *kvm)