1// SPDX-License-Identifier: GPL-2.0
2/* Converted from tools/testing/selftests/bpf/verifier/direct_stack_access_wraparound.c */
3
4#include <linux/bpf.h>
5#include <bpf/bpf_helpers.h>
6#include "bpf_misc.h"
7
8SEC("socket")
9__description("direct stack access with 32-bit wraparound. test1")
10__failure __msg("fp pointer and 2147483647")
11__failure_unpriv
12__naked void with_32_bit_wraparound_test1(void)
13{
14	asm volatile ("					\
15	r1 = r10;					\
16	r1 += 0x7fffffff;				\
17	r1 += 0x7fffffff;				\
18	w0 = 0;						\
19	*(u8*)(r1 + 0) = r0;				\
20	exit;						\
21"	::: __clobber_all);
22}
23
24SEC("socket")
25__description("direct stack access with 32-bit wraparound. test2")
26__failure __msg("fp pointer and 1073741823")
27__failure_unpriv
28__naked void with_32_bit_wraparound_test2(void)
29{
30	asm volatile ("					\
31	r1 = r10;					\
32	r1 += 0x3fffffff;				\
33	r1 += 0x3fffffff;				\
34	w0 = 0;						\
35	*(u8*)(r1 + 0) = r0;				\
36	exit;						\
37"	::: __clobber_all);
38}
39
40SEC("socket")
41__description("direct stack access with 32-bit wraparound. test3")
42__failure __msg("fp pointer offset 1073741822")
43__msg_unpriv("R1 stack pointer arithmetic goes out of range")
44__naked void with_32_bit_wraparound_test3(void)
45{
46	asm volatile ("					\
47	r1 = r10;					\
48	r1 += 0x1fffffff;				\
49	r1 += 0x1fffffff;				\
50	w0 = 0;						\
51	*(u8*)(r1 + 0) = r0;				\
52	exit;						\
53"	::: __clobber_all);
54}
55
56char _license[] SEC("license") = "GPL";
57