blob: c538c6893552563d372afd0cbd025a118104e4ff (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
|
// SPDX-License-Identifier: GPL-2.0
/* Converted from tools/testing/selftests/bpf/verifier/direct_stack_access_wraparound.c */
#include <linux/bpf.h>
#include <bpf/bpf_helpers.h>
#include "bpf_misc.h"
SEC("socket")
__description("direct stack access with 32-bit wraparound. test1")
__failure __msg("fp pointer and 2147483647")
__failure_unpriv
__naked void with_32_bit_wraparound_test1(void)
{
asm volatile (" \
r1 = r10; \
r1 += 0x7fffffff; \
r1 += 0x7fffffff; \
w0 = 0; \
*(u8*)(r1 + 0) = r0; \
exit; \
" ::: __clobber_all);
}
SEC("socket")
__description("direct stack access with 32-bit wraparound. test2")
__failure __msg("fp pointer and 1073741823")
__failure_unpriv
__naked void with_32_bit_wraparound_test2(void)
{
asm volatile (" \
r1 = r10; \
r1 += 0x3fffffff; \
r1 += 0x3fffffff; \
w0 = 0; \
*(u8*)(r1 + 0) = r0; \
exit; \
" ::: __clobber_all);
}
SEC("socket")
__description("direct stack access with 32-bit wraparound. test3")
__failure __msg("fp pointer offset 1073741822")
__msg_unpriv("R1 stack pointer arithmetic goes out of range")
__naked void with_32_bit_wraparound_test3(void)
{
asm volatile (" \
r1 = r10; \
r1 += 0x1fffffff; \
r1 += 0x1fffffff; \
w0 = 0; \
*(u8*)(r1 + 0) = r0; \
exit; \
" ::: __clobber_all);
}
char _license[] SEC("license") = "GPL";
|
