| // Copyright 2016 The Go Authors. All rights reserved. | |
| // Use of this source code is governed by a BSD-style | |
| // license that can be found in the LICENSE file. | |
| //go:build amd64 && (linux || darwin) | |
| package sha1_test | |
| import ( | |
| "crypto/internal/cryptotest" | |
| "crypto/sha1" | |
| "syscall" | |
| "testing" | |
| ) | |
| func TestOutOfBoundsRead(t *testing.T) { | |
| cryptotest.TestAllImplementations(t, "sha1", func(t *testing.T) { | |
| const pageSize = 4 << 10 | |
| data, err := syscall.Mmap(0, 0, 2*pageSize, syscall.PROT_READ|syscall.PROT_WRITE, syscall.MAP_ANON|syscall.MAP_PRIVATE) | |
| if err != nil { | |
| panic(err) | |
| } | |
| if err := syscall.Mprotect(data[pageSize:], syscall.PROT_NONE); err != nil { | |
| panic(err) | |
| } | |
| for i := 0; i < pageSize; i++ { | |
| sha1.Sum(data[pageSize-i : pageSize]) | |
| } | |
| }) | |
| } | |