diff options
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/testing/selftests/bpf/progs/map_kptr_fail.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/progs/map_kptr_fail.c b/tools/testing/selftests/bpf/progs/map_kptr_fail.c index 6443b320c732..ee053b24e6ca 100644 --- a/tools/testing/selftests/bpf/progs/map_kptr_fail.c +++ b/tools/testing/selftests/bpf/progs/map_kptr_fail.c @@ -385,4 +385,19 @@ int kptr_xchg_possibly_null(struct __sk_buff *ctx) return 0; } +SEC("?tc") +__failure __msg("invalid kptr access, R") +int reject_scalar_store_to_kptr(struct __sk_buff *ctx) +{ + struct map_value *v; + int key = 0; + + v = bpf_map_lookup_elem(&array_map, &key); + if (!v) + return 0; + + *(volatile u64 *)&v->unref_ptr = 0xBADC0DE; + return 0; +} + char _license[] SEC("license") = "GPL"; |