mirror of
https://github.com/reactos/syzkaller.git
synced 2024-11-23 03:19:51 +00:00
465 lines
12 KiB
Go
465 lines
12 KiB
Go
// Copyright 2015 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"
|
|
"fmt"
|
|
"math/rand"
|
|
"testing"
|
|
)
|
|
|
|
func TestMutationFlags(t *testing.T) {
|
|
tests := [][2]string{
|
|
// Mutate flags (bitmask = true).
|
|
{
|
|
`r0 = mutate_flags(&(0x7f0000000000)="2e2f66696c653000", 0x0, 0x1, 0x1)`,
|
|
`r0 = mutate_flags(&(0x7f0000000000)="2e2f66696c653000", 0x20, 0x1, 0x9)`,
|
|
},
|
|
{
|
|
`r0 = mutate_flags2(&(0x7f0000000000)="2e2f66696c653000", 0x0)`,
|
|
`r0 = mutate_flags2(&(0x7f0000000000)="2e2f66696c653000", 0xd9)`,
|
|
},
|
|
// Mutate flags (bitmask = false).
|
|
{
|
|
`r0 = mutate_flags3(&(0x7f0000000000)="2e2f66696c653000", 0x0)`,
|
|
`r0 = mutate_flags3(&(0x7f0000000000)="2e2f66696c653000", 0xddddeeee)`,
|
|
},
|
|
{
|
|
`r0 = mutate_flags3(&(0x7f0000000000)="2e2f66696c653000", 0xddddeeee)`,
|
|
`r0 = mutate_flags3(&(0x7f0000000000)="2e2f66696c653000", 0xaaaaaaaa)`,
|
|
},
|
|
}
|
|
runMutationTests(t, tests, true)
|
|
}
|
|
|
|
func TestChooseCall(t *testing.T) {
|
|
tests := [][2]string{
|
|
// The call with many arguments has a higher mutation probability.
|
|
{
|
|
`mutate0()
|
|
mutate_integer(0x0, 0x1, 0x1, 0x1, 0x0, 0x1, 0x0, 0x0, 0x1)
|
|
mutate_integer2(0x00, 0x00, 0x20, 0x00, 0x01)`,
|
|
`mutate0()
|
|
mutate_integer(0x0, 0x1, 0x1, 0x1, 0x0, 0x1, 0x0, 0x0, 0xffffffff)
|
|
mutate_integer2(0x00, 0x00, 0x20, 0x00, 0x01)`,
|
|
},
|
|
// Calls with the same probability.
|
|
{
|
|
`mutate_integer(0x0, 0x1, 0x1, 0x1, 0x0, 0x1, 0x0, 0x0, 0x1)
|
|
mutate_integer(0x0, 0x1, 0x1, 0x1, 0x0, 0x1, 0x0, 0x0, 0x1)
|
|
mutate_integer(0x0, 0x1, 0x1, 0x1, 0x0, 0x1, 0x0, 0x0, 0x1)
|
|
mutate_integer(0x0, 0x1, 0x1, 0x1, 0x0, 0x1, 0x0, 0x0, 0x1)
|
|
mutate_integer(0x0, 0x1, 0x1, 0x1, 0x0, 0x1, 0x0, 0x0, 0x1)`,
|
|
`mutate_integer(0x0, 0x1, 0x1, 0x1, 0x0, 0x1, 0x0, 0x0, 0x1)
|
|
mutate_integer(0x0, 0x1, 0x1, 0x1, 0x0, 0x1, 0x0, 0x0, 0x1)
|
|
mutate_integer(0x0, 0x1, 0x1, 0x1, 0x0, 0x1, 0x0, 0x0, 0xff)
|
|
mutate_integer(0x0, 0x1, 0x1, 0x1, 0x0, 0x1, 0x0, 0x0, 0x1)
|
|
mutate_integer(0x0, 0x1, 0x1, 0x1, 0x0, 0x1, 0x0, 0x0, 0x1)`,
|
|
},
|
|
// The call with a lower probability can be mutated.
|
|
{
|
|
`mutate7(&(0x7f0000000000)='123', 0x3)
|
|
mutate_integer(0x0, 0x1, 0x1, 0x1, 0x0, 0x1, 0x0, 0x0, 0x1)
|
|
r0 = mutate_flags(&(0x7f0000000000)="2e2f66696c653000", 0x0, 0x1, 0x1)`,
|
|
`mutate7(&(0x7f0000000000)='123', 0x2)
|
|
mutate_integer(0x0, 0x1, 0x1, 0x1, 0x0, 0x1, 0x0, 0x0, 0x1)
|
|
r0 = mutate_flags(&(0x7f0000000000)="2e2f66696c653000", 0x0, 0x1, 0x1)`,
|
|
},
|
|
// Complex arguments.
|
|
{
|
|
`test$struct(&(0x7f0000000000)={0x0, {0x0}})
|
|
test$array0(&(0x7f0000001000)={0x1, [@f0=0x2, @f1=0x3], 0x4})
|
|
mutate_integer(0x0, 0x1, 0x1, 0x1, 0x0, 0x1, 0x0, 0x0, 0x1)`,
|
|
`test$struct(&(0x7f0000000000)={0xff, {0x0}})
|
|
test$array0(&(0x7f0000001000)={0x1, [@f0=0x2, @f1=0x3], 0x4})
|
|
mutate_integer(0x0, 0x1, 0x1, 0x1, 0x0, 0x1, 0x0, 0x0, 0x1)`,
|
|
},
|
|
}
|
|
runMutationTests(t, tests, true)
|
|
}
|
|
|
|
func TestMutateArgument(t *testing.T) {
|
|
tests := [][2]string{
|
|
// Mutate an integer with a higher priority than the boolean arguments.
|
|
{
|
|
`mutate_integer(0x0, 0x1, 0x1, 0x1, 0x0, 0x1, 0x0, 0x0, 0x1)`,
|
|
`mutate_integer(0x0, 0x1, 0x1, 0x1, 0x0, 0x1, 0x0, 0x0, 0xffffffff)`,
|
|
},
|
|
// Mutate a boolean.
|
|
{
|
|
`mutate_integer(0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0)`,
|
|
`mutate_integer(0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0, 0x0, 0x0)`,
|
|
},
|
|
// Mutate flags (bitmask = true).
|
|
{
|
|
`r0 = mutate_flags(&(0x7f0000000000)="2e2f66696c653000", 0x0, 0x1, 0x1)`,
|
|
`r0 = mutate_flags(&(0x7f0000000000)="2e2f66696c653000", 0x20, 0x1, 0x9)`,
|
|
},
|
|
// Mutate an int8 from a set of other arguments with higher priority.
|
|
{
|
|
`mutate_integer2(0x00, 0x00, 0x20, 0x00, 0x01)`,
|
|
`mutate_integer2(0x00, 0x00, 0x20, 0x00, 0x07)`,
|
|
},
|
|
// Mutate an array of structs.
|
|
{
|
|
`mutate_array2(&(0x7f0000000000)=[{0x0}, {0x0}, {0x0}, {0x0}, {0x0}])`,
|
|
`mutate_array2(&(0x7f0000000000)=[{0x0}, {0x0}, {0x3}, {0x0}, {0x0}])`,
|
|
},
|
|
// Mutate a non-special union that have more than 1 option.
|
|
{
|
|
`mutate_union(&(0x7f0000000000)=@f1=[0x0, 0x1, 0x2, 0x3, 0x0, 0x1, 0x2, 0x3, 0x0, 0x0])`,
|
|
`mutate_union(&(0x7f0000000000)=@f0=0x2)`,
|
|
},
|
|
// Mutate the value of the current option in union.
|
|
{
|
|
`mutate_union(&(0x7f0000000000)=@f1=[0x0, 0x1, 0x2, 0x3, 0x0, 0x1, 0x2, 0x3, 0x0, 0x0])`,
|
|
`mutate_union(&(0x7f0000000000)=@f1=[0x0, 0x1, 0xff, 0x3, 0x0, 0x1, 0x2, 0x3, 0x0, 0x0])`,
|
|
},
|
|
}
|
|
|
|
target := initTargetTest(t, "test", "64")
|
|
for ti, test := range tests {
|
|
test := test
|
|
t.Run(fmt.Sprint(ti), func(t *testing.T) {
|
|
t.Parallel()
|
|
rs, ct, p, goal, err := buildTestContext(test, target)
|
|
if err != nil {
|
|
t.Fatalf("failed to deserialize the program: %v", err)
|
|
}
|
|
want := goal.Serialize()
|
|
for i := 0; i < 1e5; i++ {
|
|
p1 := p.Clone()
|
|
ctx := &mutator{
|
|
p: p1,
|
|
r: newRand(p1.Target, rs),
|
|
ncalls: 2 * len(p.Calls),
|
|
ct: ct,
|
|
corpus: nil,
|
|
}
|
|
ctx.mutateArg()
|
|
data1 := p1.Serialize()
|
|
if bytes.Equal(want, data1) {
|
|
t.Logf("success on iter %v", i)
|
|
return
|
|
}
|
|
}
|
|
t.Fatalf("failed to achieve goal, original:%s\ngoal:%s", test[0], test[1])
|
|
})
|
|
}
|
|
}
|
|
|
|
func TestSizeMutateArg(t *testing.T) {
|
|
target, rs, iters := initRandomTargetTest(t, "test", "64")
|
|
r := newRand(target, rs)
|
|
ct := target.DefaultChoiceTable()
|
|
for i := 0; i < iters; i++ {
|
|
p := target.Generate(rs, 10, ct)
|
|
for it := 0; it < 10; it++ {
|
|
p1 := p.Clone()
|
|
ctx := &mutator{
|
|
p: p1,
|
|
r: r,
|
|
ncalls: 2 * len(p.Calls),
|
|
ct: ct,
|
|
corpus: nil,
|
|
}
|
|
ctx.mutateArg()
|
|
ForeachArg(p.Calls[0], func(arg Arg, ctx *ArgCtx) {
|
|
if _, ok := arg.Type().(*IntType); !ok {
|
|
return
|
|
}
|
|
bits := arg.Type().TypeBitSize()
|
|
limit := uint64(1<<bits - 1)
|
|
val := arg.(*ConstArg).Val
|
|
if val > limit {
|
|
t.Fatalf("Invalid argument value: %d. (arg size: %d; max value: %d)", val, arg.Size(), limit)
|
|
}
|
|
})
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestClone(t *testing.T) {
|
|
target, rs, iters := initTest(t)
|
|
ct := target.DefaultChoiceTable()
|
|
for i := 0; i < iters; i++ {
|
|
p := target.Generate(rs, 10, ct)
|
|
p1 := p.Clone()
|
|
data := p.Serialize()
|
|
data1 := p1.Serialize()
|
|
if !bytes.Equal(data, data1) {
|
|
t.Fatalf("program changed after clone\noriginal:\n%s\n\nnew:\n%s\n", data, data1)
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestMutateRandom(t *testing.T) {
|
|
testEachTargetRandom(t, func(t *testing.T, target *Target, rs rand.Source, iters int) {
|
|
ct := target.DefaultChoiceTable()
|
|
next:
|
|
for i := 0; i < iters; i++ {
|
|
p := target.Generate(rs, 10, ct)
|
|
data0 := p.Serialize()
|
|
p1 := p.Clone()
|
|
// There is a chance that mutation will produce the same program.
|
|
// So we check that at least 1 out of 20 mutations actually change the program.
|
|
for try := 0; try < 20; try++ {
|
|
p1.Mutate(rs, 10, ct, nil)
|
|
data := p.Serialize()
|
|
if !bytes.Equal(data0, data) {
|
|
t.Fatalf("program changed after mutate\noriginal:\n%s\n\nnew:\n%s\n",
|
|
data0, data)
|
|
}
|
|
data1 := p1.Serialize()
|
|
if bytes.Equal(data, data1) {
|
|
continue
|
|
}
|
|
if _, err := target.Deserialize(data1, NonStrict); err != nil {
|
|
t.Fatalf("Deserialize failed after Mutate: %v\n%s", err, data1)
|
|
}
|
|
continue next
|
|
}
|
|
t.Fatalf("mutation does not change program:\n%s", data0)
|
|
}
|
|
})
|
|
}
|
|
|
|
func TestMutateCorpus(t *testing.T) {
|
|
target, rs, iters := initTest(t)
|
|
ct := target.DefaultChoiceTable()
|
|
var corpus []*Prog
|
|
for i := 0; i < 100; i++ {
|
|
p := target.Generate(rs, 10, ct)
|
|
corpus = append(corpus, p)
|
|
}
|
|
for i := 0; i < iters; i++ {
|
|
p1 := target.Generate(rs, 10, ct)
|
|
p1.Mutate(rs, 10, ct, corpus)
|
|
}
|
|
}
|
|
|
|
func TestMutateTable(t *testing.T) {
|
|
tests := [][2]string{
|
|
// Insert a call.
|
|
{`
|
|
mutate0()
|
|
mutate2()
|
|
`, `
|
|
mutate0()
|
|
mutate1()
|
|
mutate2()
|
|
`},
|
|
// Remove calls and update args.
|
|
{`
|
|
r0 = mutate5(&(0x7f0000000000)="2e2f66696c653000", 0x0)
|
|
mutate0()
|
|
mutate6(r0, &(0x7f0000000000)="00", 0x1)
|
|
mutate1()
|
|
`, `
|
|
mutate0()
|
|
mutate6(0xffffffffffffffff, &(0x7f0000000000)="00", 0x1)
|
|
mutate1()
|
|
`},
|
|
// Mutate flags.
|
|
{`
|
|
r0 = mutate5(&(0x7f0000000000)="2e2f66696c653000", 0x0)
|
|
mutate0()
|
|
mutate6(r0, &(0x7f0000000000)="00", 0x1)
|
|
mutate1()
|
|
`, `
|
|
r0 = mutate5(&(0x7f0000000000)="2e2f66696c653000", 0xcdcdcdcd)
|
|
mutate0()
|
|
mutate6(r0, &(0x7f0000000000)="00", 0x1)
|
|
mutate1()
|
|
`},
|
|
// Mutate data (delete byte and update size).
|
|
{`
|
|
mutate4(&(0x7f0000000000)="11223344", 0x4)
|
|
`, `
|
|
mutate4(&(0x7f0000000000)="113344", 0x3)
|
|
`},
|
|
// Mutate data (change byte).
|
|
{`
|
|
mutate4(&(0x7f0000000000)="1122", 0x2)
|
|
`, `
|
|
mutate4(&(0x7f0000000000)="1100", 0x2)
|
|
`},
|
|
// Change filename.
|
|
{`
|
|
mutate5(&(0x7f0000001000)="2e2f66696c653000", 0x22c0)
|
|
mutate5(&(0x7f0000001000)="2e2f66696c653000", 0x22c0)
|
|
`, `
|
|
mutate5(&(0x7f0000001000)="2e2f66696c653000", 0x22c0)
|
|
mutate5(&(0x7f0000001000)="2e2f66696c653100", 0x22c0)
|
|
`},
|
|
// Mutate the array.
|
|
{`
|
|
mutate_array(0x1, 0x30, &(0x7f0000000000)=[0x1, 0x1, 0x1, 0x1, 0x1])
|
|
`, `
|
|
mutate_array(0x1, 0x30, &(0x7f0000000000)=[0x1, 0x1, 0x1, 0x1])
|
|
`},
|
|
// Extend an array.
|
|
{`
|
|
mutate3(&(0x7f0000000000)=[0x1, 0x1], 0x2)
|
|
`, `
|
|
mutate3(&(0x7f0000000000)=[0x1, 0x1, 0x1], 0x3)
|
|
`},
|
|
// Mutate size from it's natural value.
|
|
{`
|
|
mutate7(&(0x7f0000000000)='123', 0x3)
|
|
`, `
|
|
mutate7(&(0x7f0000000000)='123', 0x2)
|
|
`},
|
|
// Mutate proc to the special value.
|
|
{`
|
|
mutate8(0x2)
|
|
`, `
|
|
mutate8(0xffffffffffffffff)
|
|
`},
|
|
// Increase buffer length.
|
|
{`
|
|
mutate_buffer(&(0x7f0000000000)=""/100)
|
|
`, `
|
|
mutate_buffer(&(0x7f0000000000)=""/200)
|
|
`},
|
|
// Decrease buffer length.
|
|
{`
|
|
mutate_buffer(&(0x7f0000000000)=""/800)
|
|
`, `
|
|
mutate_buffer(&(0x7f0000000000)=""/4)
|
|
`},
|
|
// Mutate a ranged buffer.
|
|
{`
|
|
mutate_rangedbuffer(&(0x7f00000000c0)=""/10)
|
|
`, `
|
|
mutate_rangedbuffer(&(0x7f00000000c0)=""/7)
|
|
`},
|
|
}
|
|
|
|
runMutationTests(t, tests, true)
|
|
}
|
|
|
|
func TestNegativeMutations(t *testing.T) {
|
|
tests := [][2]string{
|
|
// Mutate buffer size outside the range limits.
|
|
{`
|
|
mutate_rangedbuffer(&(0x7f00000000c0)=""/7)
|
|
`, `
|
|
mutate_rangedbuffer(&(0x7f00000000c0)=""/4)
|
|
`},
|
|
{`
|
|
mutate_rangedbuffer(&(0x7f00000000c0)=""/7)
|
|
`, `
|
|
mutate_rangedbuffer(&(0x7f00000000c0)=""/11)
|
|
`},
|
|
}
|
|
runMutationTests(t, tests, false)
|
|
}
|
|
|
|
func BenchmarkMutate(b *testing.B) {
|
|
target, cleanup := initBench(b)
|
|
defer cleanup()
|
|
ct := target.DefaultChoiceTable()
|
|
const progLen = 30
|
|
p := target.Generate(rand.NewSource(0), progLen, ct)
|
|
b.ResetTimer()
|
|
b.RunParallel(func(pb *testing.PB) {
|
|
rs := rand.NewSource(0)
|
|
for pb.Next() {
|
|
p.Clone().Mutate(rs, progLen, ct, nil)
|
|
}
|
|
})
|
|
}
|
|
|
|
func BenchmarkGenerate(b *testing.B) {
|
|
target, cleanup := initBench(b)
|
|
defer cleanup()
|
|
ct := target.DefaultChoiceTable()
|
|
const progLen = 30
|
|
b.ResetTimer()
|
|
b.RunParallel(func(pb *testing.PB) {
|
|
rs := rand.NewSource(0)
|
|
for pb.Next() {
|
|
target.Generate(rs, progLen, ct)
|
|
}
|
|
})
|
|
}
|
|
|
|
func runMutationTests(t *testing.T, tests [][2]string, valid bool) {
|
|
if raceEnabled {
|
|
t.Skip("skipping in race mode, too slow")
|
|
}
|
|
target := initTargetTest(t, "test", "64")
|
|
for ti, test := range tests {
|
|
test := test
|
|
t.Run(fmt.Sprint(ti), func(t *testing.T) {
|
|
t.Parallel()
|
|
rs, ct, p, goal, err := buildTestContext(test, target)
|
|
if err != nil {
|
|
t.Fatalf("failed to deserialize the program: %v", err)
|
|
}
|
|
want := goal.Serialize()
|
|
iters := iterCount()
|
|
if valid {
|
|
iters = 1e6 // it will stop after reaching the goal
|
|
}
|
|
for i := 0; i < iters; i++ {
|
|
p1 := p.Clone()
|
|
p1.Mutate(rs, len(goal.Calls), ct, nil)
|
|
data1 := p1.Serialize()
|
|
if bytes.Equal(want, data1) {
|
|
if !valid {
|
|
t.Fatalf("failed on iter %v", i)
|
|
}
|
|
t.Logf("success on iter %v", i)
|
|
return
|
|
}
|
|
}
|
|
if valid {
|
|
t.Fatalf("failed to achieve goal, original:%s\ngoal:%s", test[0], test[1])
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
func buildTestContext(test [2]string, target *Target) (rs rand.Source, ct *ChoiceTable, p, goal *Prog, err error) {
|
|
p, err = target.Deserialize([]byte(test[0]), Strict)
|
|
if err != nil {
|
|
return
|
|
}
|
|
goal, err = target.Deserialize([]byte(test[1]), Strict)
|
|
if err != nil {
|
|
return
|
|
}
|
|
enabled := make(map[*Syscall]bool)
|
|
for _, c := range p.Calls {
|
|
enabled[c.Meta] = true
|
|
}
|
|
for _, c := range goal.Calls {
|
|
enabled[c.Meta] = true
|
|
}
|
|
ct = target.BuildChoiceTable(nil, enabled)
|
|
rs = rand.NewSource(0)
|
|
return
|
|
}
|
|
|
|
func BenchmarkStoreLoadInt(b *testing.B) {
|
|
// To get unaligned data on heap (compiler manages to align it on stack).
|
|
data := make([]byte, 9)
|
|
sink = data
|
|
data = sink.([]byte)[1:]
|
|
for i := 0; i < b.N; i++ {
|
|
for size := 1; size <= 8; size *= 2 {
|
|
storeInt(data, uint64(i), size)
|
|
v := loadInt(data, size)
|
|
if uint8(v) != uint8(i) {
|
|
panic("bad")
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
var sink interface{}
|