prog/encodingexec_test.go - third_party/syzkaller - Git at Google

 // 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"
 	"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)
 		if _, err := p.SerializeForExec(buf, i%16); err != nil {
 			t.Fatalf("failed to serialize: %v", err)
 		}
 	}
 }

 func TestSerializeForExec(t *testing.T) {
 	// A brief recap of exec format.
 	// Exec format is an sequence of uint64's which encodes a sequence of calls.
 	// The sequence is terminated by a speciall call ExecInstrEOF.
 	// Each call is (call ID, number of arguments, arguments...).
 	// Each argument is (type, size, value).
 	// There are 3 types of arguments:
 	//  - ExecArgConst: value is const value
 	//  - ExecArgResult: value is index of a call whose result we want to reference
 	//  - ExecArgData: value is a binary blob (represented as ]size/8[ uint64's)
 	// There are 2 other special call:
 	//  - ExecInstrCopyin: copies its second argument into address specified by first argument
 	//  - ExecInstrCopyout: reads value at address specified by first argument (result can be referenced by ExecArgResult)
 	const (
 		instrEOF     = uint64(ExecInstrEOF)
 		instrCopyin  = uint64(ExecInstrCopyin)
 		instrCopyout = uint64(ExecInstrCopyout)
 		argConst     = uint64(ExecArgConst)
 		argResult    = uint64(ExecArgResult)
 		argData      = uint64(ExecArgData)
 	)
 	target, _, _ := initTest(t)
 	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
 	}{
 		{
 			"syz_test()",
 			[]uint64{
 				callID("syz_test"), 0,
 				instrEOF,
 			},
 		},
 		{
 			"syz_test$int(0x1, 0x2, 0x3, 0x4, 0x5)",
 			[]uint64{
 				callID("syz_test$int"), 5, argConst, 8, 1, 0, 0, argConst, 1, 2, 0, 0, argConst, 2, 3, 0, 0, argConst, 4, 4, 0, 0, argConst, 8, 5, 0, 0,
 				instrEOF,
 			},
 		},
 		{
 			"syz_test$align0(&(0x7f0000000000)={0x1, 0x2, 0x3, 0x4, 0x5})",
 			[]uint64{
 				instrCopyin, dataOffset + 0, argConst, 2, 1, 0, 0,
 				instrCopyin, dataOffset + 4, argConst, 4, 2, 0, 0,
 				instrCopyin, dataOffset + 8, argConst, 1, 3, 0, 0,
 				instrCopyin, dataOffset + 10, argConst, 2, 4, 0, 0,
 				instrCopyin, dataOffset + 16, argConst, 8, 5, 0, 0,
 				callID("syz_test$align0"), 1, argConst, ptrSize, dataOffset, 0, 0,
 				instrEOF,
 			},
 		},
 		{
 			"syz_test$align1(&(0x7f0000000000)={0x1, 0x2, 0x3, 0x4, 0x5})",
 			[]uint64{
 				instrCopyin, dataOffset + 0, argConst, 2, 1, 0, 0,
 				instrCopyin, dataOffset + 2, argConst, 4, 2, 0, 0,
 				instrCopyin, dataOffset + 6, argConst, 1, 3, 0, 0,
 				instrCopyin, dataOffset + 7, argConst, 2, 4, 0, 0,
 				instrCopyin, dataOffset + 9, argConst, 8, 5, 0, 0,
 				callID("syz_test$align1"), 1, argConst, ptrSize, dataOffset, 0, 0,
 				instrEOF,
 			},
 		},
 		{
 			"syz_test$align2(&(0x7f0000000000)={0x42, {[0x43]}, {[0x44]}})",
 			[]uint64{
 				instrCopyin, dataOffset + 0, argConst, 1, 0x42, 0, 0,
 				instrCopyin, dataOffset + 1, argConst, 2, 0x43, 0, 0,
 				instrCopyin, dataOffset + 4, argConst, 2, 0x44, 0, 0,
 				callID("syz_test$align2"), 1, argConst, ptrSize, dataOffset, 0, 0,
 				instrEOF,
 			},
 		},
 		{
 			"syz_test$align3(&(0x7f0000000000)={0x42, {0x43}, {0x44}})",
 			[]uint64{
 				instrCopyin, dataOffset + 0, argConst, 1, 0x42, 0, 0,
 				instrCopyin, dataOffset + 1, argConst, 1, 0x43, 0, 0,
 				instrCopyin, dataOffset + 4, argConst, 1, 0x44, 0, 0,
 				callID("syz_test$align3"), 1, argConst, ptrSize, dataOffset, 0, 0,
 				instrEOF,
 			},
 		},
 		{
 			"syz_test$align4(&(0x7f0000000000)={{0x42, 0x43}, 0x44})",
 			[]uint64{
 				instrCopyin, dataOffset + 0, argConst, 1, 0x42, 0, 0,
 				instrCopyin, dataOffset + 1, argConst, 2, 0x43, 0, 0,
 				instrCopyin, dataOffset + 4, argConst, 1, 0x44, 0, 0,
 				callID("syz_test$align4"), 1, argConst, ptrSize, dataOffset, 0, 0,
 				instrEOF,
 			},
 		},
 		{
 			"syz_test$align5(&(0x7f0000000000)={{0x42, []}, {0x43, [0x44, 0x45, 0x46]}, 0x47})",
 			[]uint64{
 				instrCopyin, dataOffset + 0, argConst, 8, 0x42, 0, 0,
 				instrCopyin, dataOffset + 8, argConst, 8, 0x43, 0, 0,
 				instrCopyin, dataOffset + 16, argConst, 2, 0x44, 0, 0,
 				instrCopyin, dataOffset + 18, argConst, 2, 0x45, 0, 0,
 				instrCopyin, dataOffset + 20, argConst, 2, 0x46, 0, 0,
 				instrCopyin, dataOffset + 22, argConst, 1, 0x47, 0, 0,
 				callID("syz_test$align5"), 1, argConst, ptrSize, dataOffset, 0, 0,
 				instrEOF,
 			},
 		},
 		{
 			"syz_test$align6(&(0x7f0000000000)={0x42, [0x43]})",
 			[]uint64{
 				instrCopyin, dataOffset + 0, argConst, 1, 0x42, 0, 0,
 				instrCopyin, dataOffset + 4, argConst, 4, 0x43, 0, 0,
 				callID("syz_test$align6"), 1, argConst, ptrSize, dataOffset, 0, 0,
 				instrEOF,
 			},
 		},
 		{
 			"syz_test$union0(&(0x7f0000000000)={0x1, @f2=0x2})",
 			[]uint64{
 				instrCopyin, dataOffset + 0, argConst, 8, 1, 0, 0,
 				instrCopyin, dataOffset + 8, argConst, 1, 2, 0, 0,
 				callID("syz_test$union0"), 1, argConst, ptrSize, dataOffset, 0, 0,
 				instrEOF,
 			},
 		},
 		{
 			"syz_test$union1(&(0x7f0000000000)={@f1=0x42, 0x43})",
 			[]uint64{
 				instrCopyin, dataOffset + 0, argConst, 4, 0x42, 0, 0,
 				instrCopyin, dataOffset + 8, argConst, 1, 0x43, 0, 0,
 				callID("syz_test$union1"), 1, argConst, ptrSize, dataOffset, 0, 0,
 				instrEOF,
 			},
 		},
 		{
 			"syz_test$union2(&(0x7f0000000000)={@f1=0x42, 0x43})",
 			[]uint64{
 				instrCopyin, dataOffset + 0, argConst, 4, 0x42, 0, 0,
 				instrCopyin, dataOffset + 4, argConst, 1, 0x43, 0, 0,
 				callID("syz_test$union2"), 1, argConst, ptrSize, dataOffset, 0, 0,
 				instrEOF,
 			},
 		},
 		{
 			"syz_test$array0(&(0x7f0000000000)={0x1, [@f0=0x2, @f1=0x3], 0x4})",
 			[]uint64{
 				instrCopyin, dataOffset + 0, argConst, 1, 1, 0, 0,
 				instrCopyin, dataOffset + 1, argConst, 2, 2, 0, 0,
 				instrCopyin, dataOffset + 3, argConst, 8, 3, 0, 0,
 				instrCopyin, dataOffset + 11, argConst, 8, 4, 0, 0,
 				callID("syz_test$array0"), 1, argConst, ptrSize, dataOffset, 0, 0,
 				instrEOF,
 			},
 		},
 		{
 			"syz_test$array1(&(0x7f0000000000)={0x42, \"0102030405\"})",
 			[]uint64{
 				instrCopyin, dataOffset + 0, argConst, 1, 0x42, 0, 0,
 				instrCopyin, dataOffset + 1, argData, 5, 0x0504030201,
 				callID("syz_test$array1"), 1, argConst, ptrSize, dataOffset, 0, 0,
 				instrEOF,
 			},
 		},
 		{
 			"syz_test$array2(&(0x7f0000000000)={0x42, \"aaaaaaaabbbbbbbbccccccccdddddddd\", 0x43})",
 			[]uint64{
 				instrCopyin, dataOffset + 0, argConst, 2, 0x42, 0, 0,
 				instrCopyin, dataOffset + 2, argData, 16, 0xbbbbbbbbaaaaaaaa, 0xddddddddcccccccc,
 				instrCopyin, dataOffset + 18, argConst, 2, 0x43, 0, 0,
 				callID("syz_test$array2"), 1, argConst, ptrSize, dataOffset, 0, 0,
 				instrEOF,
 			},
 		},
 		{
 			"syz_test$end0(&(0x7f0000000000)={0x42, 0x42, 0x42, 0x42})",
 			[]uint64{
 				instrCopyin, dataOffset + 0, argConst, 1, 0x42, 0, 0,
 				instrCopyin, dataOffset + 1, argConst, 2, 0x4200, 0, 0,
 				instrCopyin, dataOffset + 3, argConst, 4, 0x42000000, 0, 0,
 				instrCopyin, dataOffset + 7, argConst, 8, 0x4200000000000000, 0, 0,
 				callID("syz_test$end0"), 1, argConst, ptrSize, dataOffset, 0, 0,
 				instrEOF,
 			},
 		},
 		{
 			"syz_test$end1(&(0x7f0000000000)={0xe, 0x42, 0x1})",
 			[]uint64{
 				instrCopyin, dataOffset + 0, argConst, 2, 0x0e00, 0, 0,
 				instrCopyin, dataOffset + 2, argConst, 4, 0x42000000, 0, 0,
 				instrCopyin, dataOffset + 6, argConst, 8, 0x0100000000000000, 0, 0,
 				callID("syz_test$end1"), 1, argConst, ptrSize, dataOffset, 0, 0,
 				instrEOF,
 			},
 		},
 		{
 			"syz_test$bf0(&(0x7f0000000000)={0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42})",
 			[]uint64{
 				instrCopyin, dataOffset + 0, argConst, 2, 0x42, 0, 10,
 				instrCopyin, dataOffset + 8, argConst, 8, 0x42, 0, 0,
 				instrCopyin, dataOffset + 16, argConst, 2, 0x42, 0, 5,
 				instrCopyin, dataOffset + 16, argConst, 2, 0x42, 5, 6,
 				instrCopyin, dataOffset + 20, argConst, 4, 0x42, 0, 15,
 				instrCopyin, dataOffset + 24, argConst, 2, 0x42, 0, 11,
 				instrCopyin, dataOffset + 26, argConst, 2, 0x4200, 0, 11,
 				instrCopyin, dataOffset + 28, argConst, 1, 0x42, 0, 0,
 				callID("syz_test$bf0"), 1, argConst, ptrSize, dataOffset, 0, 0,
 				instrEOF,
 			},
 		},
 		{
 			"syz_test$bf1(&(0x7f0000000000)={{0x42, 0x42, 0x42}, 0x42})",
 			[]uint64{
 				instrCopyin, dataOffset + 0, argConst, 4, 0x42, 0, 10,
 				instrCopyin, dataOffset + 0, argConst, 4, 0x42, 10, 10,
 				instrCopyin, dataOffset + 0, argConst, 4, 0x42, 20, 10,
 				instrCopyin, dataOffset + 4, argConst, 1, 0x42, 0, 0,
 				callID("syz_test$bf1"), 1, argConst, ptrSize, dataOffset, 0, 0,
 				instrEOF,
 			},
 		},
 		{
 			"syz_test$res1(0xffff)",
 			[]uint64{
 				callID("syz_test$res1"), 1, argConst, 4, 0xffff, 0, 0,
 				instrEOF,
 			},
 		},
 	}

 	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))
 			if err != nil {
 				t.Fatalf("failed to deserialize prog %v: %v", i, err)
 			}
 			if _, err := p.SerializeForExec(buf, i%16); err != nil {
 				t.Fatalf("failed to serialize: %v", err)
 			}
 			w := new(bytes.Buffer)
 			binary.Write(w, binary.LittleEndian, test.serialized)
 			data := buf
 			if len(data) > len(w.Bytes()) {
 				data = data[:len(w.Bytes())]
 			}
 			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")
 			}

 		})
 	}
 }
	// 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"
	"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)
	if _, err := p.SerializeForExec(buf, i%16); err != nil {
	t.Fatalf("failed to serialize: %v", err)
	}
	}
	}

	func TestSerializeForExec(t *testing.T) {
	// A brief recap of exec format.
	// Exec format is an sequence of uint64's which encodes a sequence of calls.
	// The sequence is terminated by a speciall call ExecInstrEOF.
	// Each call is (call ID, number of arguments, arguments...).
	// Each argument is (type, size, value).
	// There are 3 types of arguments:
	// - ExecArgConst: value is const value
	// - ExecArgResult: value is index of a call whose result we want to reference
	// - ExecArgData: value is a binary blob (represented as ]size/8[ uint64's)
	// There are 2 other special call:
	// - ExecInstrCopyin: copies its second argument into address specified by first argument
	// - ExecInstrCopyout: reads value at address specified by first argument (result can be referenced by ExecArgResult)
	const (
	instrEOF = uint64(ExecInstrEOF)
	instrCopyin = uint64(ExecInstrCopyin)
	instrCopyout = uint64(ExecInstrCopyout)
	argConst = uint64(ExecArgConst)
	argResult = uint64(ExecArgResult)
	argData = uint64(ExecArgData)
	)
	target, _, _ := initTest(t)
	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
	}{
	{
	"syz_test()",
	[]uint64{
	callID("syz_test"), 0,
	instrEOF,
	},
	},
	{
	"syz_test$int(0x1, 0x2, 0x3, 0x4, 0x5)",
	[]uint64{
	callID("syz_test$int"), 5, argConst, 8, 1, 0, 0, argConst, 1, 2, 0, 0, argConst, 2, 3, 0, 0, argConst, 4, 4, 0, 0, argConst, 8, 5, 0, 0,
	instrEOF,
	},
	},
	{
	"syz_test$align0(&(0x7f0000000000)={0x1, 0x2, 0x3, 0x4, 0x5})",
	[]uint64{
	instrCopyin, dataOffset + 0, argConst, 2, 1, 0, 0,
	instrCopyin, dataOffset + 4, argConst, 4, 2, 0, 0,
	instrCopyin, dataOffset + 8, argConst, 1, 3, 0, 0,
	instrCopyin, dataOffset + 10, argConst, 2, 4, 0, 0,
	instrCopyin, dataOffset + 16, argConst, 8, 5, 0, 0,
	callID("syz_test$align0"), 1, argConst, ptrSize, dataOffset, 0, 0,
	instrEOF,
	},
	},
	{
	"syz_test$align1(&(0x7f0000000000)={0x1, 0x2, 0x3, 0x4, 0x5})",
	[]uint64{
	instrCopyin, dataOffset + 0, argConst, 2, 1, 0, 0,
	instrCopyin, dataOffset + 2, argConst, 4, 2, 0, 0,
	instrCopyin, dataOffset + 6, argConst, 1, 3, 0, 0,
	instrCopyin, dataOffset + 7, argConst, 2, 4, 0, 0,
	instrCopyin, dataOffset + 9, argConst, 8, 5, 0, 0,
	callID("syz_test$align1"), 1, argConst, ptrSize, dataOffset, 0, 0,
	instrEOF,
	},
	},
	{
	"syz_test$align2(&(0x7f0000000000)={0x42, {[0x43]}, {[0x44]}})",
	[]uint64{
	instrCopyin, dataOffset + 0, argConst, 1, 0x42, 0, 0,
	instrCopyin, dataOffset + 1, argConst, 2, 0x43, 0, 0,
	instrCopyin, dataOffset + 4, argConst, 2, 0x44, 0, 0,
	callID("syz_test$align2"), 1, argConst, ptrSize, dataOffset, 0, 0,
	instrEOF,
	},
	},
	{
	"syz_test$align3(&(0x7f0000000000)={0x42, {0x43}, {0x44}})",
	[]uint64{
	instrCopyin, dataOffset + 0, argConst, 1, 0x42, 0, 0,
	instrCopyin, dataOffset + 1, argConst, 1, 0x43, 0, 0,
	instrCopyin, dataOffset + 4, argConst, 1, 0x44, 0, 0,
	callID("syz_test$align3"), 1, argConst, ptrSize, dataOffset, 0, 0,
	instrEOF,
	},
	},
	{
	"syz_test$align4(&(0x7f0000000000)={{0x42, 0x43}, 0x44})",
	[]uint64{
	instrCopyin, dataOffset + 0, argConst, 1, 0x42, 0, 0,
	instrCopyin, dataOffset + 1, argConst, 2, 0x43, 0, 0,
	instrCopyin, dataOffset + 4, argConst, 1, 0x44, 0, 0,
	callID("syz_test$align4"), 1, argConst, ptrSize, dataOffset, 0, 0,
	instrEOF,
	},
	},
	{
	"syz_test$align5(&(0x7f0000000000)={{0x42, []}, {0x43, [0x44, 0x45, 0x46]}, 0x47})",
	[]uint64{
	instrCopyin, dataOffset + 0, argConst, 8, 0x42, 0, 0,
	instrCopyin, dataOffset + 8, argConst, 8, 0x43, 0, 0,
	instrCopyin, dataOffset + 16, argConst, 2, 0x44, 0, 0,
	instrCopyin, dataOffset + 18, argConst, 2, 0x45, 0, 0,
	instrCopyin, dataOffset + 20, argConst, 2, 0x46, 0, 0,
	instrCopyin, dataOffset + 22, argConst, 1, 0x47, 0, 0,
	callID("syz_test$align5"), 1, argConst, ptrSize, dataOffset, 0, 0,
	instrEOF,
	},
	},
	{
	"syz_test$align6(&(0x7f0000000000)={0x42, [0x43]})",
	[]uint64{
	instrCopyin, dataOffset + 0, argConst, 1, 0x42, 0, 0,
	instrCopyin, dataOffset + 4, argConst, 4, 0x43, 0, 0,
	callID("syz_test$align6"), 1, argConst, ptrSize, dataOffset, 0, 0,
	instrEOF,
	},
	},
	{
	"syz_test$union0(&(0x7f0000000000)={0x1, @f2=0x2})",
	[]uint64{
	instrCopyin, dataOffset + 0, argConst, 8, 1, 0, 0,
	instrCopyin, dataOffset + 8, argConst, 1, 2, 0, 0,
	callID("syz_test$union0"), 1, argConst, ptrSize, dataOffset, 0, 0,
	instrEOF,
	},
	},
	{
	"syz_test$union1(&(0x7f0000000000)={@f1=0x42, 0x43})",
	[]uint64{
	instrCopyin, dataOffset + 0, argConst, 4, 0x42, 0, 0,
	instrCopyin, dataOffset + 8, argConst, 1, 0x43, 0, 0,
	callID("syz_test$union1"), 1, argConst, ptrSize, dataOffset, 0, 0,
	instrEOF,
	},
	},
	{
	"syz_test$union2(&(0x7f0000000000)={@f1=0x42, 0x43})",
	[]uint64{
	instrCopyin, dataOffset + 0, argConst, 4, 0x42, 0, 0,
	instrCopyin, dataOffset + 4, argConst, 1, 0x43, 0, 0,
	callID("syz_test$union2"), 1, argConst, ptrSize, dataOffset, 0, 0,
	instrEOF,
	},
	},
	{
	"syz_test$array0(&(0x7f0000000000)={0x1, [@f0=0x2, @f1=0x3], 0x4})",
	[]uint64{
	instrCopyin, dataOffset + 0, argConst, 1, 1, 0, 0,
	instrCopyin, dataOffset + 1, argConst, 2, 2, 0, 0,
	instrCopyin, dataOffset + 3, argConst, 8, 3, 0, 0,
	instrCopyin, dataOffset + 11, argConst, 8, 4, 0, 0,
	callID("syz_test$array0"), 1, argConst, ptrSize, dataOffset, 0, 0,
	instrEOF,
	},
	},
	{
	"syz_test$array1(&(0x7f0000000000)={0x42, \"0102030405\"})",
	[]uint64{
	instrCopyin, dataOffset + 0, argConst, 1, 0x42, 0, 0,
	instrCopyin, dataOffset + 1, argData, 5, 0x0504030201,
	callID("syz_test$array1"), 1, argConst, ptrSize, dataOffset, 0, 0,
	instrEOF,
	},
	},
	{
	"syz_test$array2(&(0x7f0000000000)={0x42, \"aaaaaaaabbbbbbbbccccccccdddddddd\", 0x43})",
	[]uint64{
	instrCopyin, dataOffset + 0, argConst, 2, 0x42, 0, 0,
	instrCopyin, dataOffset + 2, argData, 16, 0xbbbbbbbbaaaaaaaa, 0xddddddddcccccccc,
	instrCopyin, dataOffset + 18, argConst, 2, 0x43, 0, 0,
	callID("syz_test$array2"), 1, argConst, ptrSize, dataOffset, 0, 0,
	instrEOF,
	},
	},
	{
	"syz_test$end0(&(0x7f0000000000)={0x42, 0x42, 0x42, 0x42})",
	[]uint64{
	instrCopyin, dataOffset + 0, argConst, 1, 0x42, 0, 0,
	instrCopyin, dataOffset + 1, argConst, 2, 0x4200, 0, 0,
	instrCopyin, dataOffset + 3, argConst, 4, 0x42000000, 0, 0,
	instrCopyin, dataOffset + 7, argConst, 8, 0x4200000000000000, 0, 0,
	callID("syz_test$end0"), 1, argConst, ptrSize, dataOffset, 0, 0,
	instrEOF,
	},
	},
	{
	"syz_test$end1(&(0x7f0000000000)={0xe, 0x42, 0x1})",
	[]uint64{
	instrCopyin, dataOffset + 0, argConst, 2, 0x0e00, 0, 0,
	instrCopyin, dataOffset + 2, argConst, 4, 0x42000000, 0, 0,
	instrCopyin, dataOffset + 6, argConst, 8, 0x0100000000000000, 0, 0,
	callID("syz_test$end1"), 1, argConst, ptrSize, dataOffset, 0, 0,
	instrEOF,
	},
	},
	{
	"syz_test$bf0(&(0x7f0000000000)={0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42})",
	[]uint64{
	instrCopyin, dataOffset + 0, argConst, 2, 0x42, 0, 10,
	instrCopyin, dataOffset + 8, argConst, 8, 0x42, 0, 0,
	instrCopyin, dataOffset + 16, argConst, 2, 0x42, 0, 5,
	instrCopyin, dataOffset + 16, argConst, 2, 0x42, 5, 6,
	instrCopyin, dataOffset + 20, argConst, 4, 0x42, 0, 15,
	instrCopyin, dataOffset + 24, argConst, 2, 0x42, 0, 11,
	instrCopyin, dataOffset + 26, argConst, 2, 0x4200, 0, 11,
	instrCopyin, dataOffset + 28, argConst, 1, 0x42, 0, 0,
	callID("syz_test$bf0"), 1, argConst, ptrSize, dataOffset, 0, 0,
	instrEOF,
	},
	},
	{
	"syz_test$bf1(&(0x7f0000000000)={{0x42, 0x42, 0x42}, 0x42})",
	[]uint64{
	instrCopyin, dataOffset + 0, argConst, 4, 0x42, 0, 10,
	instrCopyin, dataOffset + 0, argConst, 4, 0x42, 10, 10,
	instrCopyin, dataOffset + 0, argConst, 4, 0x42, 20, 10,
	instrCopyin, dataOffset + 4, argConst, 1, 0x42, 0, 0,
	callID("syz_test$bf1"), 1, argConst, ptrSize, dataOffset, 0, 0,
	instrEOF,
	},
	},
	{
	"syz_test$res1(0xffff)",
	[]uint64{
	callID("syz_test$res1"), 1, argConst, 4, 0xffff, 0, 0,
	instrEOF,
	},
	},
	}

	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))
	if err != nil {
	t.Fatalf("failed to deserialize prog %v: %v", i, err)
	}
	if _, err := p.SerializeForExec(buf, i%16); err != nil {
	t.Fatalf("failed to serialize: %v", err)
	}
	w := new(bytes.Buffer)
	binary.Write(w, binary.LittleEndian, test.serialized)
	data := buf
	if len(data) > len(w.Bytes()) {
	data = data[:len(w.Bytes())]
	}
	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")
	}

	})
	}
	}