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runtime, syscall: add calls to asan functions

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Add explicit address sanitizer instrumentation to the runtime and
syscall packages. The compiler does not instrument the runtime
package. It does instrument the syscall package, but we need to add
a couple of cases that it can't see.

Refer to the implementation of the asan malloc runtime library,
this patch also allocates extra memory as the redzone, around the
returned memory region, and marks the redzone as unaddressable to
detect the overflows or underflows.

Updates #44853.

Change-Id: I2753d1cc1296935a66bf521e31ce91e35fcdf798
Reviewed-on: https://go-review.googlesource.com/c/go/+/298614
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Trust: fannie zhang <Fannie.Zhang@arm.com>
This commit is contained in:
fanzha02 2021-01-05 17:52:43 +08:00 • committed by Ian Lance Taylor
parent 6f1e9a9c21
commit 6f327f7b88
18 changed files with 200 additions and 3 deletions
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6
src/runtime/stack.go
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@ -424,6 +424,9 @@ func stackalloc(n uint32) stack {
if msanenabled {
msanmalloc(v, uintptr(n))
}
if asanenabled {
asanunpoison(v, uintptr(n))
}
if stackDebug >= 1 {
print(" allocated ", v, "\n")
}
@ -461,6 +464,9 @@ func stackfree(stk stack) {
if msanenabled {
msanfree(v, n)
}
if asanenabled {
asanpoison(v, n)
}
if n < _FixedStack<<_NumStackOrders && n < _StackCacheSize {
order := uint8(0)
n2 := n