From: Jiri Olsa <[email protected]> Sukadev reported segfault on releasing perf env's numa data. It's due to nr_numa_nodes being set no matter if the numa data gets parsed properly. The perf_env__exit crash the on releasing non existed data.
Setting nr_numa_nodes only when data are parsed out properly. Signed-off-by: Jiri Olsa <[email protected]> Reported-by: Sukadev Bhattiprolu <[email protected]> Cc: Adrian Hunter <[email protected]> Cc: David Ahern <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Wang Nan <[email protected]> Link: http://lkml.kernel.org/n/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]> --- tools/perf/util/header.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c index 43ded20f1edf..d89c9c7ef4e5 100644 --- a/tools/perf/util/header.c +++ b/tools/perf/util/header.c @@ -1895,7 +1895,6 @@ static int process_numa_topology(struct perf_file_section *section __maybe_unuse if (ph->needs_swap) nr = bswap_32(nr); - ph->env.nr_numa_nodes = nr; nodes = zalloc(sizeof(*nodes) * nr); if (!nodes) return -ENOMEM; @@ -1932,6 +1931,7 @@ static int process_numa_topology(struct perf_file_section *section __maybe_unuse free(str); } + ph->env.nr_numa_nodes = nr; ph->env.numa_nodes = nodes; return 0; -- 2.7.4
