From: Bart Van Assche <bvanassche@acm.org>
Date: Tue, 29 Jun 2010 06:16:52 +0000 (+0000)
Subject: Fix for bug #242814 (Linux): made sure that Valgrind tools do not crash when the... 
X-Git-Tag: svn/VALGRIND_3_6_0~252
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9db21fdc0d47594f51b0fcb1031b7e8e16f497fd;p=thirdparty%2Fvalgrind.git

Fix for bug #242814 (Linux): made sure that Valgrind tools do not crash when the first argument of the mount() system call is NULL.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@11191
---

diff --git a/coregrind/m_syswrap/syswrap-linux.c b/coregrind/m_syswrap/syswrap-linux.c
index 9c47dfb2b2..247402d807 100644
--- a/coregrind/m_syswrap/syswrap-linux.c
+++ b/coregrind/m_syswrap/syswrap-linux.c
@@ -420,7 +420,8 @@ PRE(sys_mount)
    PRE_REG_READ5(long, "mount",
                  char *, source, char *, target, char *, type,
                  unsigned long, flags, void *, data);
-   PRE_MEM_RASCIIZ( "mount(source)", ARG1);
+   if (ARG1)
+      PRE_MEM_RASCIIZ( "mount(source)", ARG1);
    PRE_MEM_RASCIIZ( "mount(target)", ARG2);
    PRE_MEM_RASCIIZ( "mount(type)", ARG3);
 }