From: Brad Fitzpatrick <bradfitz@golang.org>
Date: Thu, 27 Feb 2014 22:16:47 +0000 (-0800)
Subject: syscall: add some paranoia in Linux's Accept4
X-Git-Tag: go1.3beta1~540
X-Git-Url: http://www.git.cypherpunks.su/?a=commitdiff_plain;h=0399b971d9ea0e061fb1361b448f9a8188ee2336;p=gostls13.git

syscall: add some paranoia in Linux's Accept4

Fixes #7428

LGTM=r
R=r
CC=golang-codereviews
https://golang.org/cl/69530044
---

diff --git a/src/pkg/syscall/syscall_linux.go b/src/pkg/syscall/syscall_linux.go
index 400fe50dde..704c4ffa6c 100644
--- a/src/pkg/syscall/syscall_linux.go
+++ b/src/pkg/syscall/syscall_linux.go
@@ -420,6 +420,9 @@ func Accept4(fd int, flags int) (nfd int, sa Sockaddr, err error) {
 	if err != nil {
 		return
 	}
+	if len > SizeofSockaddrAny {
+		panic("RawSockaddrAny too small")
+	}
 	sa, err = anyToSockaddr(&rsa)
 	if err != nil {
 		Close(nfd)