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
57
58
59
60
61
|
// SPDX-License-Identifier: GPL-2.0
/* Converted from tools/testing/selftests/bpf/verifier/uninit.c */
#include <linux/bpf.h>
#include <bpf/bpf_helpers.h>
#include "../../../include/linux/filter.h"
#include "bpf_misc.h"
SEC("socket")
__description("read uninitialized register")
__failure __msg("R2 !read_ok")
__failure_unpriv
__naked void read_uninitialized_register(void)
{
asm volatile (" \
r0 = r2; \
exit; \
" ::: __clobber_all);
}
SEC("socket")
__description("read invalid register")
__failure __msg("R15 is invalid")
__failure_unpriv
__naked void read_invalid_register(void)
{
asm volatile (" \
.8byte %[mov64_reg]; \
exit; \
" :
: __imm_insn(mov64_reg, BPF_MOV64_REG(BPF_REG_0, -1))
: __clobber_all);
}
SEC("socket")
__description("program doesn't init R0 before exit")
__failure __msg("R0 !read_ok")
__failure_unpriv
__naked void t_init_r0_before_exit(void)
{
asm volatile (" \
r2 = r1; \
exit; \
" ::: __clobber_all);
}
SEC("socket")
__description("program doesn't init R0 before exit in all branches")
__failure __msg("R0 !read_ok")
__msg_unpriv("R1 pointer comparison")
__naked void before_exit_in_all_branches(void)
{
asm volatile (" \
if r1 >= 0 goto l0_%=; \
r0 = 1; \
r0 += 2; \
l0_%=: exit; \
" ::: __clobber_all);
}
char _license[] SEC("license") = "GPL";
|
