| From | gregkh@linuxfou ... | Subject | [PATCH 5.11 087/306] perf traceevent: Ensure read cmdlines are null terminated. | Date | Mon, 15 Mar 2021 14:52:30 +0100 |
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From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
From: Ian Rogers <irogers@google.com>
commit 137a5258939aca56558f3a23eb229b9c4b293917 upstream.
Issue detected by address sanitizer.
Fixes: cd4ceb63438e9e28 ("perf util: Save pid-cmdline mapping into tracing header") Signed-off-by: Ian Rogers <irogers@google.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lore.kernel.org/lkml/20210226221431.1985458-1-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- tools/perf/util/trace-event-read.c | 1 + 1 file changed, 1 insertion(+)
--- 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 pr_debug("error reading saved cmdlines\n"); goto out; } + buf[ret] = '\0'; parse_saved_cmdline(pevent, buf, size); ret = 0;
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