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// Copyright 2016 syzkaller project authors. All rights reserved.
// Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.
package prog
import (
"bytes"
"encoding/binary"
"fmt"
"reflect"
"testing"
)
func TestSerializeForExecRandom(t *testing.T) {
target, rs, iters := initTest(t)
buf := make([]byte, ExecBufferSize)
for i := 0; i < iters; i++ {
p := target.Generate(rs, 10, nil)
n, err := p.SerializeForExec(buf)
if err != nil {
t.Fatalf("failed to serialize: %v", err)
}
_, err = target.DeserializeExec(buf[:n])
if err != nil {
t.Fatal(err)
}
}
}
func TestSerializeForExec(t *testing.T) {
target := initTargetTest(t, "test", "64")
var (
dataOffset = target.DataOffset
ptrSize = target.PtrSize
)
callID := func(name string) uint64 {
c := target.SyscallMap[name]
if c == nil {
t.Fatalf("unknown syscall %v", name)
}
return uint64(c.ID)
}
tests := []struct {
prog string
serialized []uint64
decoded *ExecProg
}{
{
"test()",
[]uint64{
callID("test"), ExecNoCopyout, 0,
execInstrEOF,
},
&ExecProg{
Calls: []ExecCall{
{
Meta: target.SyscallMap["test"],
Index: ExecNoCopyout,
},
},
},
},
{
"test$int(0x1, 0x2, 0x3, 0x4, 0x5)",
[]uint64{
callID("test$int"), ExecNoCopyout, 5,
execArgConst, 8, 1,
execArgConst, 1, 2,
execArgConst, 2, 3,
execArgConst, 4, 4,
execArgConst, 8, 5,
execInstrEOF,
},
nil,
},
{
"test$align0(&(0x7f0000000000)={0x1, 0x2, 0x3, 0x4, 0x5})",
[]uint64{
execInstrCopyin, dataOffset + 0, execArgConst, 2, 1,
execInstrCopyin, dataOffset + 4, execArgConst, 4, 2,
execInstrCopyin, dataOffset + 8, execArgConst, 1, 3,
execInstrCopyin, dataOffset + 10, execArgConst, 2, 4,
execInstrCopyin, dataOffset + 16, execArgConst, 8, 5,
callID("test$align0"), ExecNoCopyout, 1, execArgConst, ptrSize, dataOffset,
execInstrEOF,
},
nil,
},
{
"test$align1(&(0x7f0000000000)={0x1, 0x2, 0x3, 0x4, 0x5})",
[]uint64{
execInstrCopyin, dataOffset + 0, execArgConst, 2, 1,
execInstrCopyin, dataOffset + 2, execArgConst, 4, 2,
execInstrCopyin, dataOffset + 6, execArgConst, 1, 3,
execInstrCopyin, dataOffset + 7, execArgConst, 2, 4,
execInstrCopyin, dataOffset + 9, execArgConst, 8, 5,
callID("test$align1"), ExecNoCopyout, 1, execArgConst, ptrSize, dataOffset,
execInstrEOF,
},
nil,
},
{
"test$align2(&(0x7f0000000000)={0x42, {[0x43]}, {[0x44]}})",
[]uint64{
execInstrCopyin, dataOffset + 0, execArgConst, 1, 0x42,
execInstrCopyin, dataOffset + 1, execArgConst, 2, 0x43,
execInstrCopyin, dataOffset + 4, execArgConst, 2, 0x44,
callID("test$align2"), ExecNoCopyout, 1, execArgConst, ptrSize, dataOffset,
execInstrEOF,
},
nil,
},
{
"test$align3(&(0x7f0000000000)={0x42, {0x43}, {0x44}})",
[]uint64{
execInstrCopyin, dataOffset + 0, execArgConst, 1, 0x42,
execInstrCopyin, dataOffset + 1, execArgConst, 1, 0x43,
execInstrCopyin, dataOffset + 4, execArgConst, 1, 0x44,
callID("test$align3"), ExecNoCopyout, 1, execArgConst, ptrSize, dataOffset,
execInstrEOF,
},
nil,
},
{
"test$align4(&(0x7f0000000000)={{0x42, 0x43}, 0x44})",
[]uint64{
execInstrCopyin, dataOffset + 0, execArgConst, 1, 0x42,
execInstrCopyin, dataOffset + 1, execArgConst, 2, 0x43,
execInstrCopyin, dataOffset + 4, execArgConst, 1, 0x44,
callID("test$align4"), ExecNoCopyout, 1, execArgConst, ptrSize, dataOffset,
execInstrEOF,
},
nil,
},
{
"test$align5(&(0x7f0000000000)={{0x42, []}, {0x43, [0x44, 0x45, 0x46]}, 0x47})",
[]uint64{
execInstrCopyin, dataOffset + 0, execArgConst, 8, 0x42,
execInstrCopyin, dataOffset + 8, execArgConst, 8, 0x43,
execInstrCopyin, dataOffset + 16, execArgConst, 2, 0x44,
execInstrCopyin, dataOffset + 18, execArgConst, 2, 0x45,
execInstrCopyin, dataOffset + 20, execArgConst, 2, 0x46,
execInstrCopyin, dataOffset + 22, execArgConst, 1, 0x47,
callID("test$align5"), ExecNoCopyout, 1, execArgConst, ptrSize, dataOffset,
execInstrEOF,
},
nil,
},
{
"test$align6(&(0x7f0000000000)={0x42, [0x43]})",
[]uint64{
execInstrCopyin, dataOffset + 0, execArgConst, 1, 0x42,
execInstrCopyin, dataOffset + 4, execArgConst, 4, 0x43,
callID("test$align6"), ExecNoCopyout, 1, execArgConst, ptrSize, dataOffset,
execInstrEOF,
},
nil,
},
{
"test$union0(&(0x7f0000000000)={0x1, @f2=0x2})",
[]uint64{
execInstrCopyin, dataOffset + 0, execArgConst, 8, 1,
execInstrCopyin, dataOffset + 8, execArgConst, 1, 2,
callID("test$union0"), ExecNoCopyout, 1, execArgConst, ptrSize, dataOffset,
execInstrEOF,
},
nil,
},
{
"test$union1(&(0x7f0000000000)={@f1=0x42, 0x43})",
[]uint64{
execInstrCopyin, dataOffset + 0, execArgConst, 4, 0x42,
execInstrCopyin, dataOffset + 8, execArgConst, 1, 0x43,
callID("test$union1"), ExecNoCopyout, 1, execArgConst, ptrSize, dataOffset,
execInstrEOF,
},
nil,
},
{
"test$union2(&(0x7f0000000000)={@f1=0x42, 0x43})",
[]uint64{
execInstrCopyin, dataOffset + 0, execArgConst, 4, 0x42,
execInstrCopyin, dataOffset + 4, execArgConst, 1, 0x43,
callID("test$union2"), ExecNoCopyout, 1, execArgConst, ptrSize, dataOffset,
execInstrEOF,
},
nil,
},
{
"test$array0(&(0x7f0000000000)={0x1, [@f0=0x2, @f1=0x3], 0x4})",
[]uint64{
execInstrCopyin, dataOffset + 0, execArgConst, 1, 1,
execInstrCopyin, dataOffset + 1, execArgConst, 2, 2,
execInstrCopyin, dataOffset + 3, execArgConst, 8, 3,
execInstrCopyin, dataOffset + 11, execArgConst, 8, 4,
callID("test$array0"), ExecNoCopyout, 1, execArgConst, ptrSize, dataOffset,
execInstrEOF,
},
nil,
},
{
"test$array1(&(0x7f0000000000)={0x42, \"0102030405\"})",
[]uint64{
execInstrCopyin, dataOffset + 0, execArgConst, 1, 0x42,
execInstrCopyin, dataOffset + 1, execArgData, 5, 0x0504030201,
callID("test$array1"), ExecNoCopyout, 1, execArgConst, ptrSize, dataOffset,
execInstrEOF,
},
nil,
},
{
"test$array2(&(0x7f0000000000)={0x42, \"aaaaaaaabbbbbbbbccccccccdddddddd\", 0x43})",
[]uint64{
execInstrCopyin, dataOffset + 0, execArgConst, 2, 0x42,
execInstrCopyin, dataOffset + 2, execArgData, 16, 0xbbbbbbbbaaaaaaaa, 0xddddddddcccccccc,
execInstrCopyin, dataOffset + 18, execArgConst, 2, 0x43,
callID("test$array2"), ExecNoCopyout, 1, execArgConst, ptrSize, dataOffset,
execInstrEOF,
},
nil,
},
{
"test$end0(&(0x7f0000000000)={0x42, 0x42, 0x42, 0x42})",
[]uint64{
execInstrCopyin, dataOffset + 0, execArgConst, 1, 0x42,
execInstrCopyin, dataOffset + 1, execArgConst, 2 | 1<<8, 0x42,
execInstrCopyin, dataOffset + 3, execArgConst, 4 | 1<<8, 0x42,
execInstrCopyin, dataOffset + 7, execArgConst, 8 | 1<<8, 0x42,
callID("test$end0"), ExecNoCopyout, 1, execArgConst, ptrSize, dataOffset,
execInstrEOF,
},
nil,
},
{
"test$end1(&(0x7f0000000000)={0xe, 0x42, 0x1})",
[]uint64{
execInstrCopyin, dataOffset + 0, execArgConst, 2 | 1<<8, 0xe,
execInstrCopyin, dataOffset + 2, execArgConst, 4 | 1<<8, 0x42,
execInstrCopyin, dataOffset + 6, execArgConst, 8 | 1<<8, 0x1,
callID("test$end1"), ExecNoCopyout, 1, execArgConst, ptrSize, dataOffset,
execInstrEOF,
},
nil,
},
{
"test$bf0(&(0x7f0000000000)={0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42})",
[]uint64{
execInstrCopyin, dataOffset + 0, execArgConst, 2 | 0<<16 | 10<<24, 0x42,
execInstrCopyin, dataOffset + 8, execArgConst, 8, 0x42,
execInstrCopyin, dataOffset + 16, execArgConst, 2 | 0<<16 | 5<<24, 0x42,
execInstrCopyin, dataOffset + 16, execArgConst, 2 | 5<<16 | 6<<24, 0x42,
execInstrCopyin, dataOffset + 20, execArgConst, 4 | 0<<16 | 15<<24, 0x42,
execInstrCopyin, dataOffset + 24, execArgConst, 2 | 0<<16 | 11<<24, 0x42,
execInstrCopyin, dataOffset + 26, execArgConst, 2 | 1<<8 | 0<<16 | 11<<24, 0x42,
execInstrCopyin, dataOffset + 28, execArgConst, 1, 0x42,
callID("test$bf0"), ExecNoCopyout, 1, execArgConst, ptrSize, dataOffset,
execInstrEOF,
},
&ExecProg{
Calls: []ExecCall{
{
Meta: target.SyscallMap["test$bf0"],
Index: ExecNoCopyout,
Args: []ExecArg{
ExecArgConst{
Size: ptrSize,
Value: dataOffset,
},
},
Copyin: []ExecCopyin{
{
Addr: dataOffset + 0,
Arg: ExecArgConst{
Size: 2,
Value: 0x42,
BitfieldOffset: 0,
BitfieldLength: 10,
},
},
{
Addr: dataOffset + 8,
Arg: ExecArgConst{
Size: 8,
Value: 0x42,
},
},
{
Addr: dataOffset + 16,
Arg: ExecArgConst{
Size: 2,
Value: 0x42,
BitfieldOffset: 0,
BitfieldLength: 5,
},
},
{
Addr: dataOffset + 16,
Arg: ExecArgConst{
Size: 2,
Value: 0x42,
BitfieldOffset: 5,
BitfieldLength: 6,
},
},
{
Addr: dataOffset + 20,
Arg: ExecArgConst{
Size: 4,
Value: 0x42,
BitfieldOffset: 0,
BitfieldLength: 15,
},
},
{
Addr: dataOffset + 24,
Arg: ExecArgConst{
Size: 2,
Value: 0x42,
BitfieldOffset: 0,
BitfieldLength: 11,
},
},
{
Addr: dataOffset + 26,
Arg: ExecArgConst{
Size: 2,
Format: FormatBigEndian,
Value: 0x42,
BitfieldOffset: 0,
BitfieldLength: 11,
},
},
{
Addr: dataOffset + 28,
Arg: ExecArgConst{
Size: 1,
Value: 0x42,
},
},
},
},
},
},
},
{
"test$bf1(&(0x7f0000000000)={{0x42, 0x42, 0x42}, 0x42})",
[]uint64{
execInstrCopyin, dataOffset + 0, execArgConst, 4 | 0<<16 | 10<<24, 0x42,
execInstrCopyin, dataOffset + 0, execArgConst, 4 | 10<<16 | 10<<24, 0x42,
execInstrCopyin, dataOffset + 0, execArgConst, 4 | 20<<16 | 10<<24, 0x42,
execInstrCopyin, dataOffset + 4, execArgConst, 1, 0x42,
callID("test$bf1"), ExecNoCopyout, 1, execArgConst, ptrSize, dataOffset,
execInstrEOF,
},
nil,
},
{
"test$res1(0xffff)",
[]uint64{
callID("test$res1"), ExecNoCopyout, 1, execArgConst, 4, 0xffff,
execInstrEOF,
},
nil,
},
{
"test$opt3(0x0)",
[]uint64{
callID("test$opt3"), ExecNoCopyout, 1, execArgConst, 8 | 4<<32, 0x64,
execInstrEOF,
},
nil,
},
{
// Special value that translates to 0 for all procs.
"test$opt3(0xffffffffffffffff)",
[]uint64{
callID("test$opt3"), ExecNoCopyout, 1, execArgConst, 8, 0,
execInstrEOF,
},
nil,
},
{
// NULL pointer must be encoded os 0.
"test$opt1(0x0)",
[]uint64{
callID("test$opt1"), ExecNoCopyout, 1, execArgConst, 8, 0,
execInstrEOF,
},
nil,
},
{
"test$align7(&(0x7f0000000000)={{0x1, 0x2, 0x3, 0x4, 0x5, 0x6}, 0x42})",
[]uint64{
execInstrCopyin, dataOffset + 0, execArgConst, 1 | 0<<16 | 1<<24, 0x1,
execInstrCopyin, dataOffset + 0, execArgConst, 1 | 1<<16 | 1<<24, 0x2,
execInstrCopyin, dataOffset + 0, execArgConst, 1 | 2<<16 | 1<<24, 0x3,
execInstrCopyin, dataOffset + 1, execArgConst, 2 | 0<<16 | 1<<24, 0x4,
execInstrCopyin, dataOffset + 1, execArgConst, 2 | 1<<16 | 1<<24, 0x5,
execInstrCopyin, dataOffset + 1, execArgConst, 2 | 2<<16 | 1<<24, 0x6,
execInstrCopyin, dataOffset + 8, execArgConst, 1, 0x42,
callID("test$align7"), ExecNoCopyout, 1, execArgConst, ptrSize, dataOffset,
execInstrEOF,
},
nil,
},
{
"test$excessive_fields1(0x0)",
[]uint64{
callID("test$excessive_fields1"), ExecNoCopyout, 1, execArgConst, ptrSize, 0x0,
execInstrEOF,
},
nil,
},
{
"test$excessive_fields1(0xffffffffffffffff)",
[]uint64{
callID("test$excessive_fields1"), ExecNoCopyout, 1, execArgConst, ptrSize, 0xffffffffffffffff,
execInstrEOF,
},
nil,
},
{
"test$excessive_fields1(0xfffffffffffffffe)",
[]uint64{
callID("test$excessive_fields1"), ExecNoCopyout, 1, execArgConst, ptrSize, 0x9999999999999999,
execInstrEOF,
},
nil,
},
{
"test$csum_ipv4_tcp(&(0x7f0000000000)={{0x0, 0x1, 0x2}, {{0x0}, \"ab\"}})",
[]uint64{
execInstrCopyin, dataOffset + 0, execArgConst, 2, 0x0,
execInstrCopyin, dataOffset + 2, execArgConst, 4 | 1<<8, 0x1,
execInstrCopyin, dataOffset + 6, execArgConst, 4 | 1<<8, 0x2,
execInstrCopyin, dataOffset + 10, execArgConst, 2, 0x0,
execInstrCopyin, dataOffset + 12, execArgData, 1, 0xab,
execInstrCopyin, dataOffset + 10, execArgCsum, 2, ExecArgCsumInet, 5,
ExecArgCsumChunkData, dataOffset + 2, 4,
ExecArgCsumChunkData, dataOffset + 6, 4,
ExecArgCsumChunkConst, 0x0600, 2,
ExecArgCsumChunkConst, 0x0300, 2,
ExecArgCsumChunkData, dataOffset + 10, 3,
execInstrCopyin, dataOffset + 0, execArgCsum, 2, ExecArgCsumInet, 1,
ExecArgCsumChunkData, dataOffset + 0, 10,
callID("test$csum_ipv4_tcp"), ExecNoCopyout, 1, execArgConst, ptrSize, dataOffset,
execInstrEOF,
},
nil,
},
}
buf := make([]byte, ExecBufferSize)
for i, test := range tests {
i, test := i, test
t.Run(fmt.Sprintf("%v:%v", i, test.prog), func(t *testing.T) {
p, err := target.Deserialize([]byte(test.prog), Strict)
if err != nil {
t.Fatalf("failed to deserialize prog %v: %v", i, err)
}
n, err := p.SerializeForExec(buf)
if err != nil {
t.Fatalf("failed to serialize: %v", err)
}
w := new(bytes.Buffer)
binary.Write(w, binary.LittleEndian, test.serialized)
data := buf[:n]
if !bytes.Equal(data, w.Bytes()) {
got := make([]uint64, len(data)/8)
binary.Read(bytes.NewReader(data), binary.LittleEndian, &got)
t.Logf("want: %v", test.serialized)
t.Logf("got: %v", got)
t.Fatalf("mismatch")
}
decoded, err := target.DeserializeExec(data)
if err != nil {
t.Fatal(err)
}
if test.decoded != nil && !reflect.DeepEqual(decoded, *test.decoded) {
t.Logf("want: %#v", *test.decoded)
t.Logf("got: %#v", decoded)
t.Fatalf("decoded mismatch")
}
})
}
}