From f6ffcab30da48e9d7cfa742fbcd46b752fe809b2 Mon Sep 17 00:00:00 2001
From: Jed Davis <jld@mozilla.com>
Date: Tue, 20 May 2014 18:38:06 -0700
Subject: [PATCH] Bug 920372 - Allow tgkill only for threads of the calling
 process itself. r=kang

---
 security/sandbox/linux/SandboxFilter.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/security/sandbox/linux/SandboxFilter.cpp b/security/sandbox/linux/SandboxFilter.cpp
index e195d7b6409c..4f0da9cc5153 100644
--- a/security/sandbox/linux/SandboxFilter.cpp
+++ b/security/sandbox/linux/SandboxFilter.cpp
@@ -209,7 +209,7 @@ SandboxFilterImpl::Build() {
 
   // Used by profiler.  Also used for raise(), which causes problems
   // with Android KitKat abort(); see bug 1004832.
-  Allow(SYSCALL(tgkill));
+  Allow(SYSCALL_WITH_ARG(tgkill, 0, getpid()));
 
   /* B2G specific low-frequency syscalls */
 #ifdef MOZ_WIDGET_GONK