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// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2026 Meta Platforms, Inc. and affiliates. */
#include <vmlinux.h>
#include <bpf/bpf_helpers.h>
#include "../test_kmods/bpf_testmod_kfunc.h"
#include "bpf_misc.h"
#if defined(__BPF_FEATURE_STACK_ARGUMENT)
SEC("tc")
__failure __msg("Unrecognized *(R11-8) type STRUCT")
int test_stack_arg_big(struct __sk_buff *skb)
{
struct prog_test_big_arg s = { .a = 1, .b = 2 };
return bpf_kfunc_call_stack_arg_big(1, 2, 3, 4, 5, s);
}
SEC("socket")
__description("r11 in ALU instruction")
__failure __msg("R11 is invalid")
__naked void r11_alu_reject(void)
{
asm volatile (
"r11 += 1;"
"r0 = 0;"
"exit;"
::: __clobber_all);
}
SEC("socket")
__description("r11 store with non-DW size")
__failure __msg("R11 is invalid")
__naked void r11_store_non_dw(void)
{
asm volatile (
"*(u32 *)(r11 - 8) = r1;"
"r0 = 0;"
"exit;"
::: __clobber_all);
}
SEC("socket")
__description("r11 store with unaligned offset")
__failure __msg("R11 is invalid")
__naked void r11_store_unaligned(void)
{
asm volatile (
"*(u64 *)(r11 - 4) = r1;"
"r0 = 0;"
"exit;"
::: __clobber_all);
}
SEC("socket")
__description("r11 store with positive offset")
__failure __msg("R11 is invalid")
__naked void r11_store_positive_off(void)
{
asm volatile (
"*(u64 *)(r11 + 8) = r1;"
"r0 = 0;"
"exit;"
::: __clobber_all);
}
SEC("socket")
__description("r11 load with negative offset")
__failure __msg("R11 is invalid")
__naked void r11_load_negative_off(void)
{
asm volatile (
"r0 = *(u64 *)(r11 - 8);"
"exit;"
::: __clobber_all);
}
SEC("socket")
__description("r11 load with non-DW size")
__failure __msg("R11 is invalid")
__naked void r11_load_non_dw(void)
{
asm volatile (
"r0 = *(u32 *)(r11 + 8);"
"exit;"
::: __clobber_all);
}
SEC("socket")
__description("r11 store with zero offset")
__failure __msg("R11 is invalid")
__naked void r11_store_zero_off(void)
{
asm volatile (
"*(u64 *)(r11 + 0) = r1;"
"r0 = 0;"
"exit;"
::: __clobber_all);
}
#else
SEC("tc")
__description("stack_arg_fail: not supported, dummy test")
__success
int test_stack_arg_big(struct __sk_buff *skb)
{
return 0;
}
#endif
char _license[] SEC("license") = "GPL";
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