[PATCH v4 5/9] perf ui hists: Fix memory leak in evsel__hists_browse() interactive loop

[Ian Rogers <irogers@google.com>]

In the evsel__hists_browse() interactive loop, the options array is
filled with strings dynamically allocated via asprintf() and displayed
in a popup menu. However, if the user picks a hotkey or triggers another
menu iteration, nr_options is reset to 0 without freeing the prior
strings, leaving them abandoned in the array and leaking memory on every
menu event.

Fix it by invoking free_popup_options(options, MAX_OPTIONS) at the
beginning of each menu iteration (covering both the while(1) start and
the 'do_hotkey:' label).

Reported-by: sashiko-bot <sashiko-bot@kernel.org>
Closes: https://lore.kernel.org/linux-perf-users/20260709170834.52F1A1F000E9@smtp.kernel.org/
Assisted-by: Antigravity:gemini-3.5-flash
Signed-off-by: Ian Rogers <irogers@google.com>
---
 tools/perf/ui/browsers/hists.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/perf/ui/browsers/hists.c b/tools/perf/ui/browsers/hists.c
index 7842f228435d..70f8a820d0a0 100644
--- a/tools/perf/ui/browsers/hists.c
+++ b/tools/perf/ui/browsers/hists.c
@@ -3087,6 +3087,7 @@ static int evsel__hists_browse(struct evsel *evsel, int nr_events, const char *h
 
 		key = 0; // reset key
 do_hotkey:		 // key came straight from options ui__popup_menu()
+		free_popup_options(options, MAX_OPTIONS);
 		choice = nr_options = 0;
 		key = hist_browser__run(browser, helpline, warn_lost_event, key);
 
-- 
2.55.0.795.g602f6c329a-goog