[PATCH bpf-next] libbpf: fix build error introduced by legacy kprobe feature

[Rafael David Tinoco <rafaeldtinoco@xxxxxxxxx>]

Fix commit 467b3225553a ("libbpf: Introduce legacy kprobe events
support") build issue under FORTIFY_SOURCE.

Reported-by: sunyucong@xxxxxxxxx
Cc: andrii.nakryiko@xxxxxxxxx
Signed-off-by: Rafael David Tinoco <rafaeldtinoco@xxxxxxxxx>
---
 tools/lib/bpf/libbpf.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c
index 6ecfdc1fa7ba..b45eab3d30cd 100644
--- a/tools/lib/bpf/libbpf.c
+++ b/tools/lib/bpf/libbpf.c
@@ -8997,7 +8997,7 @@ static int poke_kprobe_events(bool add, const char *name, bool retprobe, uint64_
 {
 	int fd, ret = 0;
 	pid_t p = getpid();
-	char cmd[192], probename[128], probefunc[128];
+	char cmd[192] = "\0", probename[128] = "\0", probefunc[128] = "\0";
 	const char *file = "/sys/kernel/debug/tracing/kprobe_events";
 
 	if (retprobe)
-- 
2.30.2