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perf ui hists: Guard against NULL hist_entry in add_script_opt()

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In add_script_opt(), when the browser selection has no valid hist_entry
(for example, when all entries are filtered out or the trace is empty),
hist_browser__selected_entry() returns NULL.

Add an explicit check for he == NULL prior to accessing he->time to avoid a
potential NULL pointer dereference crash.

Assisted-by: Antigravity:gemini-3.5-flash
Signed-off-by: Ian Rogers <irogers@google.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
This commit is contained in:
Ian Rogers 2026-07-22 21:59:45 -07:00 committed by Namhyung Kim
parent ad7620a2b9
commit 08b0cd02e9
1 changed files with 2 additions and 0 deletions
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2
tools/perf/ui/browsers/hists.c
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@ -2826,6 +2826,8 @@ add_script_opt(struct hist_browser *browser,
time_optstr++;
time_act++;
}
if (he == NULL)
return n;
j = sprintf(tstr, " in ");
j += timestamp__scnprintf_usec(he->time, tstr + j,
sizeof tstr - j);