added task and solution

solution/setuid_fail/setuid_fail.bpf.c

@@ -0,0 +1,20 @@
+#include "vmlinux.h"
+#include <bpf/bpf_core_read.h>
+#include <bpf/bpf_helpers.h>
+#include <bpf/bpf_tracing.h>
+
+char LICENSE[] SEC("license") = "GPL";
+
+struct {
+    __uint(type, BPF_MAP_TYPE_RINGBUF);
+    __uint(max_entries, 256 * 1024);
+} rb SEC(".maps");
+
+#define EPERM 1
+
+SEC("fmod_ret/__x64_sys_setuid")
+long BPF_PROG(handle_setuid, struct pt_regs *regs, int ret)
+{
+    // Block the setuid call
+    return -EPERM;
+}