4c9a72e486
The repository is being switched from the personal account github.com/derekparker/delve to the organization account github.com/go-delve/delve. This patch updates imports and docs, while preserving things which should not be changed such as my name in the CHANGELOG and in TODO comments.
455 lines
12 KiB
Go
455 lines
12 KiB
Go
package core
|
|
|
|
import (
|
|
"bytes"
|
|
"flag"
|
|
"fmt"
|
|
"go/constant"
|
|
"io/ioutil"
|
|
"os"
|
|
"os/exec"
|
|
"path"
|
|
"path/filepath"
|
|
"reflect"
|
|
"runtime"
|
|
"strings"
|
|
"testing"
|
|
|
|
"github.com/go-delve/delve/pkg/goversion"
|
|
"github.com/go-delve/delve/pkg/proc"
|
|
"github.com/go-delve/delve/pkg/proc/test"
|
|
)
|
|
|
|
var buildMode string
|
|
|
|
func TestMain(m *testing.M) {
|
|
flag.StringVar(&buildMode, "test-buildmode", "", "selects build mode")
|
|
if buildMode != "" && buildMode != "pie" {
|
|
fmt.Fprintf(os.Stderr, "unknown build mode %q", buildMode)
|
|
os.Exit(1)
|
|
}
|
|
os.Exit(test.RunTestsWithFixtures(m))
|
|
}
|
|
|
|
func assertNoError(err error, t testing.TB, s string) {
|
|
if err != nil {
|
|
_, file, line, _ := runtime.Caller(1)
|
|
fname := filepath.Base(file)
|
|
t.Fatalf("failed assertion at %s:%d: %s - %s\n", fname, line, s, err)
|
|
}
|
|
}
|
|
|
|
func TestSplicedReader(t *testing.T) {
|
|
data := []byte{}
|
|
data2 := []byte{}
|
|
for i := 0; i < 100; i++ {
|
|
data = append(data, byte(i))
|
|
data2 = append(data2, byte(i+100))
|
|
}
|
|
|
|
type region struct {
|
|
data []byte
|
|
off uintptr
|
|
length uintptr
|
|
}
|
|
tests := []struct {
|
|
name string
|
|
regions []region
|
|
readAddr uintptr
|
|
readLen int
|
|
want []byte
|
|
}{
|
|
{
|
|
"Insert after",
|
|
[]region{
|
|
{data, 0, 1},
|
|
{data2, 1, 1},
|
|
},
|
|
0,
|
|
2,
|
|
[]byte{0, 101},
|
|
},
|
|
{
|
|
"Insert before",
|
|
[]region{
|
|
{data, 1, 1},
|
|
{data2, 0, 1},
|
|
},
|
|
0,
|
|
2,
|
|
[]byte{100, 1},
|
|
},
|
|
{
|
|
"Completely overwrite",
|
|
[]region{
|
|
{data, 1, 1},
|
|
{data2, 0, 3},
|
|
},
|
|
0,
|
|
3,
|
|
[]byte{100, 101, 102},
|
|
},
|
|
{
|
|
"Overwrite end",
|
|
[]region{
|
|
{data, 0, 2},
|
|
{data2, 1, 2},
|
|
},
|
|
0,
|
|
3,
|
|
[]byte{0, 101, 102},
|
|
},
|
|
{
|
|
"Overwrite start",
|
|
[]region{
|
|
{data, 0, 3},
|
|
{data2, 0, 2},
|
|
},
|
|
0,
|
|
3,
|
|
[]byte{100, 101, 2},
|
|
},
|
|
{
|
|
"Punch hole",
|
|
[]region{
|
|
{data, 0, 5},
|
|
{data2, 1, 3},
|
|
},
|
|
0,
|
|
5,
|
|
[]byte{0, 101, 102, 103, 4},
|
|
},
|
|
{
|
|
"Overlap two",
|
|
[]region{
|
|
{data, 10, 4},
|
|
{data, 14, 4},
|
|
{data2, 12, 4},
|
|
},
|
|
10,
|
|
8,
|
|
[]byte{10, 11, 112, 113, 114, 115, 16, 17},
|
|
},
|
|
}
|
|
for _, test := range tests {
|
|
t.Run(test.name, func(t *testing.T) {
|
|
mem := &SplicedMemory{}
|
|
for _, region := range test.regions {
|
|
r := bytes.NewReader(region.data)
|
|
mem.Add(&OffsetReaderAt{r, 0}, region.off, region.length)
|
|
}
|
|
got := make([]byte, test.readLen)
|
|
n, err := mem.ReadMemory(got, test.readAddr)
|
|
if n != test.readLen || err != nil || !reflect.DeepEqual(got, test.want) {
|
|
t.Errorf("ReadAt = %v, %v, %v, want %v, %v, %v", n, err, got, test.readLen, nil, test.want)
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
func withCoreFile(t *testing.T, name, args string) *Process {
|
|
// This is all very fragile and won't work on hosts with non-default core patterns.
|
|
// Might be better to check in the binary and core?
|
|
tempDir, err := ioutil.TempDir("", "")
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
test.PathsToRemove = append(test.PathsToRemove, tempDir)
|
|
var buildFlags test.BuildFlags
|
|
if buildMode == "pie" {
|
|
buildFlags = test.BuildModePIE
|
|
}
|
|
fix := test.BuildFixture(name, buildFlags)
|
|
bashCmd := fmt.Sprintf("cd %v && ulimit -c unlimited && GOTRACEBACK=crash %v %s", tempDir, fix.Path, args)
|
|
exec.Command("bash", "-c", bashCmd).Run()
|
|
cores, err := filepath.Glob(path.Join(tempDir, "core*"))
|
|
switch {
|
|
case err != nil || len(cores) > 1:
|
|
t.Fatalf("Got %v, wanted one file named core* in %v", cores, tempDir)
|
|
case len(cores) == 0:
|
|
t.Skipf("core file was not produced, could not run test")
|
|
return nil
|
|
}
|
|
corePath := cores[0]
|
|
|
|
p, err := OpenCore(corePath, fix.Path, []string{})
|
|
if err != nil {
|
|
t.Errorf("OpenCore(%q) failed: %v", corePath, err)
|
|
pat, err := ioutil.ReadFile("/proc/sys/kernel/core_pattern")
|
|
t.Errorf("read core_pattern: %q, %v", pat, err)
|
|
apport, err := ioutil.ReadFile("/var/log/apport.log")
|
|
t.Errorf("read apport log: %q, %v", apport, err)
|
|
t.Fatalf("previous errors")
|
|
}
|
|
return p
|
|
}
|
|
|
|
func TestCore(t *testing.T) {
|
|
if runtime.GOOS != "linux" || runtime.GOARCH != "amd64" {
|
|
return
|
|
}
|
|
p := withCoreFile(t, "panic", "")
|
|
|
|
gs, _, err := proc.GoroutinesInfo(p, 0, 0)
|
|
if err != nil || len(gs) == 0 {
|
|
t.Fatalf("GoroutinesInfo() = %v, %v; wanted at least one goroutine", gs, err)
|
|
}
|
|
|
|
var panicking *proc.G
|
|
var panickingStack []proc.Stackframe
|
|
for _, g := range gs {
|
|
t.Logf("Goroutine %d", g.ID)
|
|
stack, err := g.Stacktrace(10, false)
|
|
if err != nil {
|
|
t.Errorf("Stacktrace() on goroutine %v = %v", g, err)
|
|
}
|
|
for _, frame := range stack {
|
|
fnname := ""
|
|
if frame.Call.Fn != nil {
|
|
fnname = frame.Call.Fn.Name
|
|
}
|
|
t.Logf("\tframe %s:%d in %s %#x (systemstack: %v)", frame.Call.File, frame.Call.Line, fnname, frame.Call.PC, frame.SystemStack)
|
|
if frame.Current.Fn != nil && strings.Contains(frame.Current.Fn.Name, "panic") {
|
|
panicking = g
|
|
panickingStack = stack
|
|
}
|
|
}
|
|
}
|
|
if panicking == nil {
|
|
t.Fatalf("Didn't find a call to panic in goroutine stacks: %v", gs)
|
|
}
|
|
|
|
var mainFrame *proc.Stackframe
|
|
// Walk backward, because the current function seems to be main.main
|
|
// in the actual call to panic().
|
|
for i := len(panickingStack) - 1; i >= 0; i-- {
|
|
if panickingStack[i].Current.Fn != nil && panickingStack[i].Current.Fn.Name == "main.main" {
|
|
mainFrame = &panickingStack[i]
|
|
}
|
|
}
|
|
if mainFrame == nil {
|
|
t.Fatalf("Couldn't find main in stack %v", panickingStack)
|
|
}
|
|
msg, err := proc.FrameToScope(p.BinInfo(), p.CurrentThread(), nil, *mainFrame).EvalVariable("msg", proc.LoadConfig{MaxStringLen: 64})
|
|
if err != nil {
|
|
t.Fatalf("Couldn't EvalVariable(msg, ...): %v", err)
|
|
}
|
|
if constant.StringVal(msg.Value) != "BOOM!" {
|
|
t.Errorf("main.msg = %q, want %q", msg.Value, "BOOM!")
|
|
}
|
|
|
|
regs, err := p.CurrentThread().Registers(true)
|
|
if err != nil {
|
|
t.Fatalf("Couldn't get current thread registers: %v", err)
|
|
}
|
|
regslice := regs.Slice()
|
|
for _, reg := range regslice {
|
|
t.Logf("%s = %s", reg.Name, reg.Value)
|
|
}
|
|
}
|
|
|
|
func TestCoreFpRegisters(t *testing.T) {
|
|
if runtime.GOOS != "linux" || runtime.GOARCH != "amd64" {
|
|
return
|
|
}
|
|
// in go1.10 the crash is executed on a different thread and registers are
|
|
// no longer available in the core dump.
|
|
if ver, _ := goversion.Parse(runtime.Version()); ver.Major < 0 || ver.AfterOrEqual(goversion.GoVersion{1, 10, -1, 0, 0, ""}) {
|
|
t.Skip("not supported in go1.10 and later")
|
|
}
|
|
|
|
p := withCoreFile(t, "fputest/", "panic")
|
|
|
|
gs, _, err := proc.GoroutinesInfo(p, 0, 0)
|
|
if err != nil || len(gs) == 0 {
|
|
t.Fatalf("GoroutinesInfo() = %v, %v; wanted at least one goroutine", gs, err)
|
|
}
|
|
|
|
var regs proc.Registers
|
|
for _, thread := range p.ThreadList() {
|
|
frames, err := proc.ThreadStacktrace(thread, 10)
|
|
if err != nil {
|
|
t.Errorf("ThreadStacktrace for %x = %v", thread.ThreadID(), err)
|
|
continue
|
|
}
|
|
for i := range frames {
|
|
if frames[i].Current.Fn == nil {
|
|
continue
|
|
}
|
|
if frames[i].Current.Fn.Name == "main.main" {
|
|
regs, err = thread.Registers(true)
|
|
if err != nil {
|
|
t.Fatalf("Could not get registers for thread %x, %v", thread.ThreadID(), err)
|
|
}
|
|
break
|
|
}
|
|
}
|
|
if regs != nil {
|
|
break
|
|
}
|
|
}
|
|
|
|
regtests := []struct{ name, value string }{
|
|
{"ST(0)", "0x3fffe666660000000000"},
|
|
{"ST(1)", "0x3fffd9999a0000000000"},
|
|
{"ST(2)", "0x3fffcccccd0000000000"},
|
|
{"ST(3)", "0x3fffc000000000000000"},
|
|
{"ST(4)", "0x3fffb333333333333000"},
|
|
{"ST(5)", "0x3fffa666666666666800"},
|
|
{"ST(6)", "0x3fff9999999999999800"},
|
|
{"ST(7)", "0x3fff8cccccccccccd000"},
|
|
// Unlike TestClientServer_FpRegisters in service/test/integration2_test
|
|
// we can not test the value of XMM0, it probably has been reused by
|
|
// something between the panic and the time we get the core dump.
|
|
{"XMM9", "0x3ff66666666666663ff4cccccccccccd"},
|
|
{"XMM10", "0x3fe666663fd9999a3fcccccd3fc00000"},
|
|
{"XMM3", "0x3ff199999999999a3ff3333333333333"},
|
|
{"XMM4", "0x3ff4cccccccccccd3ff6666666666666"},
|
|
{"XMM5", "0x3fcccccd3fc000003fe666663fd9999a"},
|
|
{"XMM6", "0x4004cccccccccccc4003333333333334"},
|
|
{"XMM7", "0x40026666666666664002666666666666"},
|
|
{"XMM8", "0x4059999a404ccccd4059999a404ccccd"},
|
|
}
|
|
|
|
for _, reg := range regs.Slice() {
|
|
t.Logf("%s = %s", reg.Name, reg.Value)
|
|
}
|
|
|
|
for _, regtest := range regtests {
|
|
found := false
|
|
for _, reg := range regs.Slice() {
|
|
if reg.Name == regtest.name {
|
|
found = true
|
|
if !strings.HasPrefix(reg.Value, regtest.value) {
|
|
t.Fatalf("register %s expected %q got %q", reg.Name, regtest.value, reg.Value)
|
|
}
|
|
}
|
|
}
|
|
if !found {
|
|
t.Fatalf("register %s not found: %v", regtest.name, regs)
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestCoreWithEmptyString(t *testing.T) {
|
|
if runtime.GOOS != "linux" || runtime.GOARCH != "amd64" {
|
|
return
|
|
}
|
|
p := withCoreFile(t, "coreemptystring", "")
|
|
|
|
gs, _, err := proc.GoroutinesInfo(p, 0, 0)
|
|
assertNoError(err, t, "GoroutinesInfo")
|
|
|
|
var mainFrame *proc.Stackframe
|
|
mainSearch:
|
|
for _, g := range gs {
|
|
stack, err := g.Stacktrace(10, false)
|
|
assertNoError(err, t, "Stacktrace()")
|
|
for _, frame := range stack {
|
|
if frame.Current.Fn != nil && frame.Current.Fn.Name == "main.main" {
|
|
mainFrame = &frame
|
|
break mainSearch
|
|
}
|
|
}
|
|
}
|
|
|
|
if mainFrame == nil {
|
|
t.Fatal("could not find main.main frame")
|
|
}
|
|
|
|
scope := proc.FrameToScope(p.BinInfo(), p.CurrentThread(), nil, *mainFrame)
|
|
v1, err := scope.EvalVariable("t", proc.LoadConfig{true, 1, 64, 64, -1, 0})
|
|
assertNoError(err, t, "EvalVariable(t)")
|
|
assertNoError(v1.Unreadable, t, "unreadable variable 't'")
|
|
t.Logf("t = %#v\n", v1)
|
|
v2, err := scope.EvalVariable("s", proc.LoadConfig{true, 1, 64, 64, -1, 0})
|
|
assertNoError(err, t, "EvalVariable(s)")
|
|
assertNoError(v2.Unreadable, t, "unreadable variable 's'")
|
|
t.Logf("s = %#v\n", v2)
|
|
}
|
|
|
|
func TestMinidump(t *testing.T) {
|
|
if runtime.GOOS != "windows" {
|
|
t.Skip("minidumps can only be produced on windows")
|
|
}
|
|
var buildFlags test.BuildFlags
|
|
if buildMode == "pie" {
|
|
buildFlags = test.BuildModePIE
|
|
}
|
|
fix := test.BuildFixture("sleep", buildFlags)
|
|
mdmpPath := procdump(t, fix.Path)
|
|
|
|
p, err := OpenCore(mdmpPath, fix.Path, []string{})
|
|
if err != nil {
|
|
t.Fatalf("OpenCore: %v", err)
|
|
}
|
|
gs, _, err := proc.GoroutinesInfo(p, 0, 0)
|
|
if err != nil || len(gs) == 0 {
|
|
t.Fatalf("GoroutinesInfo() = %v, %v; wanted at least one goroutine", gs, err)
|
|
}
|
|
t.Logf("%d goroutines", len(gs))
|
|
foundMain, foundTime := false, false
|
|
for _, g := range gs {
|
|
stack, err := g.Stacktrace(10, false)
|
|
if err != nil {
|
|
t.Errorf("Stacktrace() on goroutine %v = %v", g, err)
|
|
}
|
|
t.Logf("goroutine %d", g.ID)
|
|
for _, frame := range stack {
|
|
name := "?"
|
|
if frame.Current.Fn != nil {
|
|
name = frame.Current.Fn.Name
|
|
}
|
|
t.Logf("\t%s:%d in %s %#x", frame.Current.File, frame.Current.Line, name, frame.Current.PC)
|
|
if frame.Current.Fn == nil {
|
|
continue
|
|
}
|
|
switch frame.Current.Fn.Name {
|
|
case "main.main":
|
|
foundMain = true
|
|
case "time.Sleep":
|
|
foundTime = true
|
|
}
|
|
}
|
|
if foundMain != foundTime {
|
|
t.Errorf("found main.main but no time.Sleep (or viceversa) %v %v", foundMain, foundTime)
|
|
}
|
|
}
|
|
if !foundMain {
|
|
t.Fatalf("could not find main goroutine")
|
|
}
|
|
}
|
|
|
|
func procdump(t *testing.T, exePath string) string {
|
|
exeDir := filepath.Dir(exePath)
|
|
cmd := exec.Command("procdump64", "-accepteula", "-ma", "-n", "1", "-s", "3", "-x", exeDir, exePath, "quit")
|
|
out, err := cmd.CombinedOutput() // procdump exits with non-zero status on success, so we have to ignore the error here
|
|
if !strings.Contains(string(out), "Dump count reached.") {
|
|
t.Fatalf("possible error running procdump64, output: %q, error: %v", string(out), err)
|
|
}
|
|
|
|
dh, err := os.Open(exeDir)
|
|
if err != nil {
|
|
t.Fatalf("could not open executable file directory %q: %v", exeDir, err)
|
|
}
|
|
defer dh.Close()
|
|
fis, err := dh.Readdir(-1)
|
|
if err != nil {
|
|
t.Fatalf("could not read executable file directory %q: %v", exeDir, err)
|
|
}
|
|
t.Logf("looking for dump file")
|
|
exeName := filepath.Base(exePath)
|
|
for _, fi := range fis {
|
|
name := fi.Name()
|
|
t.Logf("\t%s", name)
|
|
if strings.HasPrefix(name, exeName) && strings.HasSuffix(name, ".dmp") {
|
|
mdmpPath := filepath.Join(exeDir, name)
|
|
test.PathsToRemove = append(test.PathsToRemove, mdmpPath)
|
|
return mdmpPath
|
|
}
|
|
}
|
|
|
|
t.Fatalf("could not find dump file")
|
|
return ""
|
|
}
|