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Groups > linux.kernel > #1239811

[PATCH 3/9] perf annotate: Fix sizeof_sym_hist overflow issue

From Jiri Olsa <jolsa@kernel.org>
Newsgroups linux.kernel
Subject [PATCH 3/9] perf annotate: Fix sizeof_sym_hist overflow issue
Date 2015-10-05 20:10 +0200
Message-ID <qgimZ-6vn-17@gated-at.bofh.it> (permalink)
References <qgimZ-6vn-11@gated-at.bofh.it>
Organization linux.* mail to news gateway

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The annotated_source::sizeof_sym_hist could easily overflow
int size, resulting in crash in __symbol__inc_addr_samples.

Changing its type int size_t as was probably intended from
beginning based on initialization code in symbol__alloc_hist.

Link: http://lkml.kernel.org/n/tip-tf6ciz2mziuijvm25034qzcv@git.kernel.org
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
---
 tools/perf/util/annotate.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/util/annotate.h b/tools/perf/util/annotate.h
index e9996092a093..cea323d9ee7e 100644
--- a/tools/perf/util/annotate.h
+++ b/tools/perf/util/annotate.h
@@ -122,7 +122,7 @@ struct annotated_source {
 	struct list_head   source;
 	struct source_line *lines;
 	int    		   nr_histograms;
-	int    		   sizeof_sym_hist;
+	size_t		   sizeof_sym_hist;
 	struct cyc_hist	   *cycles_hist;
 	struct sym_hist	   histograms[0];
 };
-- 
2.4.3

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[PATCH 3/9] perf annotate: Fix sizeof_sym_hist overflow issue Jiri Olsa <jolsa@kernel.org> - 2015-10-05 20:10 +0200
  [tip:perf/core] perf annotate: Fix sizeof_sym_hist overflow issue tip-bot for Jiri Olsa <tipbot@zytor.com> - 2015-10-06 09:20 +0200

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