perf callchain: Allow for max_stack greater than PERF_MAX_STACK_DEPTH

Adjust the validation to allow for max_stack greater than
PERF_MAX_STACK_DEPTH.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/r/1443186956-18718-18-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c
index 76fe167..5ef90be 100644 (file)
--- a/tools/perf/util/machine.c
+++ b/tools/perf/util/machine.c
@@ -1831,7 +1831,7 @@ static int thread__resolve_callchain_sample(struct thread *thread,
        }
 
 check_calls:
-       if (chain->nr > PERF_MAX_STACK_DEPTH) {
+       if (chain->nr > PERF_MAX_STACK_DEPTH && (int)chain->nr > max_stack) {
                pr_warning("corrupted callchain. skipping...\n");
                return 0;
        }