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runtime, syscall: add calls to msan functions

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Add explicit memory 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.

Change-Id: I2d66073f713fe67e33a6720460d2bb8f72f31394
Reviewed-on: https://go-review.googlesource.com/16164
Reviewed-by: David Crawshaw <crawshaw@golang.org>
This commit is contained in:
Ian Lance Taylor 2015-10-21 11:04:42 -07:00
parent c279250946
commit 73f329f472
15 changed files with 132 additions and 0 deletions
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6
src/runtime/stack.go
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@ -364,6 +364,9 @@ func stackalloc(n uint32) (stack, []stkbar) {
if raceenabled {
racemalloc(v, uintptr(n))
}
if msanenabled {
msanmalloc(v, uintptr(n))
}
if stackDebug >= 1 {
print(" allocated ", v, "\n")
}
@ -393,6 +396,9 @@ func stackfree(stk stack, n uintptr) {
}
return
}
if msanenabled {
msanfree(v, n)
}
if stackCache != 0 && n < _FixedStack<<_NumStackOrders && n < _StackCacheSize {
order := uint8(0)
n2 := n