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Message-Id: <20210226221431.1985458-1-irogers@google.com>
Date: Fri, 26 Feb 2021 14:14:31 -0800
From: Ian Rogers <irogers@...gle.com>
To: Peter Zijlstra <peterz@...radead.org>,
Ingo Molnar <mingo@...hat.com>,
Arnaldo Carvalho de Melo <acme@...nel.org>,
Mark Rutland <mark.rutland@....com>,
Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
Jiri Olsa <jolsa@...hat.com>,
Namhyung Kim <namhyung@...nel.org>,
linux-kernel@...r.kernel.org
Cc: Stephane Eranian <eranian@...gle.com>,
Ian Rogers <irogers@...gle.com>
Subject: [PATCH] perf trace: Ensure read cmdlines are null terminated.
Issue detected by address sanitizer.
Fixes: cd4ceb63438e (perf util: Save pid-cmdline mapping into tracing header)
Signed-off-by: Ian Rogers <irogers@...gle.com>
---
tools/perf/util/trace-event-read.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/tools/perf/util/trace-event-read.c b/tools/perf/util/trace-event-read.c
index f507dff713c9..8a01af783310 100644
--- a/tools/perf/util/trace-event-read.c
+++ b/tools/perf/util/trace-event-read.c
@@ -361,6 +361,7 @@ static int read_saved_cmdline(struct tep_handle *pevent)
pr_debug("error reading saved cmdlines\n");
goto out;
}
+ buf[ret] = '\0';
parse_saved_cmdline(pevent, buf, size);
ret = 0;
--
2.30.1.766.gb4fecdf3b7-goog
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