From f2b487db45f2aa203892384f6a08f0a761edad5d Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Wed, 22 Apr 2015 16:18:14 +0900 Subject: [PATCH] perf hists browser: Fix possible memory leak The options array saves strings for each popup menu item. The number of items can be vary according to the currently selected item. So it can leak some memory if it's exited from a small item. Fix it by freeing all items when loop terminates. Signed-off-by: Namhyung Kim Acked-by: Jiri Olsa Cc: David Ahern Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1429687101-4360-4-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/ui/browsers/hists.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/tools/perf/ui/browsers/hists.c b/tools/perf/ui/browsers/hists.c index 995b7a8596b1..0972d4722297 100644 --- a/tools/perf/ui/browsers/hists.c +++ b/tools/perf/ui/browsers/hists.c @@ -1424,7 +1424,8 @@ static int perf_evsel__hists_browse(struct perf_evsel *evsel, int nr_events, struct hist_browser *browser = hist_browser__new(hists); struct branch_info *bi; struct pstack *fstack; - char *options[16]; +#define MAX_OPTIONS 16 + char *options[MAX_OPTIONS]; int nr_options = 0; int key = -1; char buf[64]; @@ -1691,7 +1692,8 @@ static int perf_evsel__hists_browse(struct perf_evsel *evsel, int nr_events, "Switch to another data file in PWD") > 0) switch_data = nr_options++; add_exit_option: - options[nr_options++] = (char *)"Exit"; + if (asprintf(&options[nr_options], "Exit") > 0) + nr_options++; retry_popup_menu: choice = ui__popup_menu(nr_options, options); @@ -1812,7 +1814,7 @@ static int perf_evsel__hists_browse(struct perf_evsel *evsel, int nr_events, pstack__delete(fstack); out: hist_browser__delete(browser); - free_popup_options(options, nr_options - 1); + free_popup_options(options, MAX_OPTIONS); return key; }