From: Adrian Hunter <adrian.hunter@intel.com>
Date: Fri, 25 Sep 2015 13:15:48 +0000 (+0300)
Subject: perf callchain: Allow for max_stack greater than PERF_MAX_STACK_DEPTH
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=0edd453368c6b9cdb756bde2b6675bb0d5d0eb0a;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

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 76fe167c359e..5ef90be2a249 100644
--- 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;
 	}