[PATCH v1 1/2] perf lock: Fix option value type in parse_max_stack

From: Ian Rogers

Date: Thu Mar 19 2026 - 18:12:25 EST


The value is a void* and the address of an int, max_stack_depth, is
set up in the perf lock options. The parse_max_stack function treats
the int* as a long*, make this more correct by declaring the value to
be an int*.

Fixes: 0a277b622670 ("perf lock contention: Check --max-stack option")
Signed-off-by: Ian Rogers <irogers@xxxxxxxxxx>
---
tools/perf/builtin-lock.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/builtin-lock.c b/tools/perf/builtin-lock.c
index e8962c985d34..5585aeb97684 100644
--- a/tools/perf/builtin-lock.c
+++ b/tools/perf/builtin-lock.c
@@ -2250,7 +2250,7 @@ static int parse_map_entry(const struct option *opt, const char *str,
static int parse_max_stack(const struct option *opt, const char *str,
int unset __maybe_unused)
{
- unsigned long *len = (unsigned long *)opt->value;
+ int *len = opt->value;
long val;
char *endptr;

--
2.53.0.959.g497ff81fa9-goog