Commit 6b687917 authored Feb 26, 2021 by Ian Rogers Committed by Greg Kroah-Hartman Mar 17, 2021

perf traceevent: Ensure read cmdlines are null terminated.



commit 137a5258939aca56558f3a23eb229b9c4b293917 upstream.

Issue detected by address sanitizer.

Fixes: cd4ceb63 ("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>

parent 07c50b79

tools/perf/util/trace-event-read.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -381,6 +381,7 @@ 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;