diff options
| author | Dmitry Vyukov <dvyukov@google.com> | 2018-02-19 19:35:04 +0100 |
|---|---|---|
| committer | Dmitry Vyukov <dvyukov@google.com> | 2018-02-19 21:48:20 +0100 |
| commit | 75a7c5e2d1f09a4a58e7e1f1f4ef0b0f55a33413 (patch) | |
| tree | d44c2457c44b53192005f0b89cd6633a2a2b0ff9 /prog/mutation_test.go | |
| parent | 90fd6503136121e9494761a460898e83bc0b6b3e (diff) | |
prog: rework address allocation
1. mmap all memory always, without explicit mmap calls in the program.
This makes lots of things much easier and removes lots of code.
Makes mmap not a special syscall and allows to fuzz without mmap enabled.
2. Change address assignment algorithm.
Current algorithm allocates unmapped addresses too frequently
and allows collisions between arguments of a single syscall.
The new algorithm analyzes actual allocations in the program
and places new arguments at unused locations.
Diffstat (limited to 'prog/mutation_test.go')
| -rw-r--r-- | prog/mutation_test.go | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/prog/mutation_test.go b/prog/mutation_test.go index 5c5ac232a..2267dd254 100644 --- a/prog/mutation_test.go +++ b/prog/mutation_test.go @@ -135,7 +135,6 @@ mutate5(&(0x7f0000001000)="2e2f66696c653100", 0x22c0) {` mutate3(&(0x7f0000000000)=[0x1, 0x1], 0x2) `, ` -mmap(&(0x7f0000000000/0x1000)=nil, 0x1000) mutate3(&(0x7f0000000000)=[0x1, 0x1, 0x1], 0x3) `}, // Mutate size from it's natural value. @@ -206,3 +205,22 @@ func BenchmarkMutate(b *testing.B) { } }) } + +func BenchmarkGenerate(b *testing.B) { + olddebug := debug + debug = false + defer func() { debug = olddebug }() + target, err := GetTarget("linux", "amd64") + if err != nil { + b.Fatal(err) + } + prios := target.CalculatePriorities(nil) + ct := target.BuildChoiceTable(prios, nil) + const progLen = 30 + b.RunParallel(func(pb *testing.PB) { + rs := rand.NewSource(0) + for pb.Next() { + target.Generate(rs, progLen, ct) + } + }) +} |