| // SPDX-License-Identifier: GPL-2.0-only |
| #include <stddef.h> |
| #include <linux/bpf.h> |
| #include <bpf/bpf_helpers.h> |
| #include "bpf_misc.h" |
| |
| #if !defined(__clang__) |
| #pragma GCC diagnostic ignored "-Wmaybe-uninitialized" |
| #endif |
| |
| struct Small { |
| long x; |
| }; |
| |
| struct Big { |
| long x; |
| long y; |
| }; |
| |
| __noinline int foo(const struct Big *big) |
| { |
| if (!big) |
| return 0; |
| |
| return bpf_get_prandom_u32() < big->y; |
| } |
| |
| SEC("cgroup_skb/ingress") |
| __failure __msg("invalid indirect access to stack") |
| int global_func10(struct __sk_buff *skb) |
| { |
| const struct Small small = {.x = skb->len }; |
| |
| return foo((struct Big *)&small) ? 1 : 0; |
| } |
