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
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
|
package btf_test
import (
"bytes"
"io"
"os"
"slices"
"strings"
"testing"
"github.com/cilium/ebpf"
"github.com/cilium/ebpf/btf"
"github.com/cilium/ebpf/internal"
"github.com/cilium/ebpf/internal/testutils"
"github.com/go-quicktest/qt"
)
func TestCORERelocationLoad(t *testing.T) {
file := testutils.NativeFile(t, "testdata/relocs-%s.elf")
fh, err := os.Open(file)
if err != nil {
t.Fatal(err)
}
defer fh.Close()
spec, err := ebpf.LoadCollectionSpecFromReader(fh)
if err != nil {
t.Fatal(err)
}
for _, progSpec := range spec.Programs {
t.Run(progSpec.Name, func(t *testing.T) {
if _, err := fh.Seek(0, io.SeekStart); err != nil {
t.Fatal(err)
}
prog, err := ebpf.NewProgramWithOptions(progSpec, ebpf.ProgramOptions{
KernelTypes: spec.Types,
})
testutils.SkipIfNotSupported(t, err)
if strings.HasPrefix(progSpec.Name, "err_") {
if err == nil {
prog.Close()
t.Fatal("Expected an error")
}
t.Log("Got expected error:", err)
return
}
if err != nil {
t.Fatal("Load program:", err)
}
defer prog.Close()
ret, _, err := prog.Test(internal.EmptyBPFContext)
testutils.SkipIfNotSupported(t, err)
if err != nil {
t.Fatal("Error when running:", err)
}
if ret != 0 {
t.Error("Assertion failed on line", ret)
}
})
}
}
func TestCORERelocationRead(t *testing.T) {
file := testutils.NativeFile(t, "testdata/relocs_read-%s.elf")
spec, err := ebpf.LoadCollectionSpec(file)
if err != nil {
t.Fatal(err)
}
targetFile := testutils.NativeFile(t, "testdata/relocs_read_tgt-%s.elf")
targetSpec, err := btf.LoadSpec(targetFile)
if err != nil {
t.Fatal(err)
}
for _, progSpec := range spec.Programs {
t.Run(progSpec.Name, func(t *testing.T) {
prog, err := ebpf.NewProgramWithOptions(progSpec, ebpf.ProgramOptions{
KernelTypes: targetSpec,
})
testutils.SkipIfNotSupported(t, err)
if err != nil {
t.Fatal("Load program:", err)
}
defer prog.Close()
ret, _, err := prog.Test(internal.EmptyBPFContext)
testutils.SkipIfNotSupported(t, err)
if err != nil {
t.Fatal("Error when running:", err)
}
if ret != 0 {
t.Error("Assertion failed on line", ret)
}
})
}
}
func TestLD64IMMReloc(t *testing.T) {
testutils.SkipOnOldKernel(t, "5.4", "vmlinux BTF in sysfs")
file := testutils.NativeFile(t, "testdata/relocs_enum-%s.elf")
fh, err := os.Open(file)
if err != nil {
t.Fatal(err)
}
defer fh.Close()
spec, err := ebpf.LoadCollectionSpecFromReader(fh)
if err != nil {
t.Fatal(err)
}
coll, err := ebpf.NewCollection(spec)
if err != nil {
t.Fatal(err)
}
defer coll.Close()
}
func TestCOREPoisonLineInfo(t *testing.T) {
testutils.SkipOnOldKernel(t, "5.0", "program ext_infos")
spec, err := ebpf.LoadCollectionSpec(testutils.NativeFile(t, "../testdata/errors-%s.elf"))
qt.Assert(t, qt.IsNil(err))
var b btf.Builder
raw, err := b.Marshal(nil, nil)
qt.Assert(t, qt.IsNil(err))
empty, err := btf.LoadSpecFromReader(bytes.NewReader(raw))
qt.Assert(t, qt.IsNil(err))
for _, test := range []struct {
name string
}{
{"poisoned_single"},
{"poisoned_double"},
} {
progSpec := spec.Programs[test.name]
qt.Assert(t, qt.IsNotNil(progSpec))
t.Run(test.name, func(t *testing.T) {
t.Log(progSpec.Instructions)
_, err := ebpf.NewProgramWithOptions(progSpec, ebpf.ProgramOptions{
KernelTypes: empty,
})
testutils.SkipIfNotSupported(t, err)
var ve *ebpf.VerifierError
qt.Assert(t, qt.ErrorAs(err, &ve))
found := slices.ContainsFunc(ve.Log, func(line string) bool {
return strings.HasPrefix(line, "; instruction poisoned by CO-RE")
})
qt.Assert(t, qt.IsTrue(found))
t.Logf("%-5v", ve)
})
}
}
|
