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Commit f2b487db authored by Namhyung Kim's avatar Namhyung Kim Committed by Arnaldo Carvalho de Melo
Browse files

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: default avatarNamhyung Kim <namhyung@kernel.org>
Acked-by: default avatarJiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1429687101-4360-4-git-send-email-namhyung@kernel.org


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent d8a0f800

tools/perf/ui/browsers/hists.c

+5 −3
Original line number Diff line number Diff line
@@ -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;

}