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56e5476e10
CL 651755 introduced registration of root regions when allocating memory. We also need to unregister that memory to avoid the leak sanitizer accessing unmapped memory. Issue #67833 Change-Id: I5d403d66e65a8a003492f4d79dad22d416fd8574 Reviewed-on: https://go-review.googlesource.com/c/go/+/659135 LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Ian Lance Taylor <iant@google.com>
82 lines
2.0 KiB
Go
82 lines
2.0 KiB
Go
// Copyright 2021 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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//go:build asan
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package runtime
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import (
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"internal/runtime/sys"
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"unsafe"
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)
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// Public address sanitizer API.
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func ASanRead(addr unsafe.Pointer, len int) {
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sp := sys.GetCallerSP()
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pc := sys.GetCallerPC()
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doasanread(addr, uintptr(len), sp, pc)
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}
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func ASanWrite(addr unsafe.Pointer, len int) {
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sp := sys.GetCallerSP()
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pc := sys.GetCallerPC()
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doasanwrite(addr, uintptr(len), sp, pc)
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}
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// Private interface for the runtime.
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const asanenabled = true
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// asan{read,write} are nosplit because they may be called between
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// fork and exec, when the stack must not grow. See issue #50391.
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//go:linkname asanread
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//go:nosplit
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func asanread(addr unsafe.Pointer, sz uintptr) {
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sp := sys.GetCallerSP()
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pc := sys.GetCallerPC()
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doasanread(addr, sz, sp, pc)
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}
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//go:linkname asanwrite
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//go:nosplit
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func asanwrite(addr unsafe.Pointer, sz uintptr) {
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sp := sys.GetCallerSP()
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pc := sys.GetCallerPC()
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doasanwrite(addr, sz, sp, pc)
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}
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//go:noescape
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func doasanread(addr unsafe.Pointer, sz, sp, pc uintptr)
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//go:noescape
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func doasanwrite(addr unsafe.Pointer, sz, sp, pc uintptr)
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//go:noescape
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func asanunpoison(addr unsafe.Pointer, sz uintptr)
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//go:noescape
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func asanpoison(addr unsafe.Pointer, sz uintptr)
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//go:noescape
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func asanregisterglobals(addr unsafe.Pointer, n uintptr)
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//go:noescape
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func lsanregisterrootregion(addr unsafe.Pointer, n uintptr)
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//go:noescape
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func lsanunregisterrootregion(addr unsafe.Pointer, n uintptr)
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func lsandoleakcheck()
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// These are called from asan_GOARCH.s
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//
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//go:cgo_import_static __asan_read_go
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//go:cgo_import_static __asan_write_go
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//go:cgo_import_static __asan_unpoison_go
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//go:cgo_import_static __asan_poison_go
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//go:cgo_import_static __asan_register_globals_go
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//go:cgo_import_static __lsan_register_root_region_go
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//go:cgo_import_static __lsan_unregister_root_region_go
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//go:cgo_import_static __lsan_do_leak_check_go
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