struct_ops_refcounted_fail__ref_leak.c

 1#include <vmlinux.h>
 2#include <bpf/bpf_tracing.h>
 3#include "../test_kmods/bpf_testmod.h"
 4#include "bpf_misc.h"
 5
 6char _license[] SEC("license") = "GPL";
 7
 8/* Test that the verifier rejects a program that acquires a referenced
 9 * kptr through context without releasing the reference
10 */
11SEC("struct_ops/test_refcounted")
12__failure __msg("Unreleased reference id=1 alloc_insn=0")
13int BPF_PROG(refcounted_fail__ref_leak, int dummy,
14	     struct task_struct *task)
15{
16	return 0;
17}
18
19SEC(".struct_ops.link")
20struct bpf_testmod_ops testmod_ref_acquire = {
21	.test_refcounted = (void *)refcounted_fail__ref_leak,
22};