From: Samuel Thibault <samuel.thibault@ens-lyon.org>
Date: Mon, 2 Jan 2023 00:49:59 +0000 (+0100)
Subject: hurd: Make dl-sysdep __sbrk check __vm_allocate call
X-Git-Tag: glibc-2.37~53
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=b7a5fec8b04edb505f51c207ae50b6777c2c55b2;p=thirdparty%2Fglibc.git

hurd: Make dl-sysdep __sbrk check __vm_allocate call

The caller won't be able to progress, but better crash than use random
addr.
---

diff --git a/sysdeps/mach/hurd/dl-sysdep.c b/sysdeps/mach/hurd/dl-sysdep.c
index 2f022ee90c8..84fe966efe2 100644
--- a/sysdeps/mach/hurd/dl-sysdep.c
+++ b/sysdeps/mach/hurd/dl-sysdep.c
@@ -699,7 +699,8 @@ void *weak_function
 __sbrk (intptr_t increment)
 {
   vm_address_t addr;
-  __vm_allocate (__mach_task_self (), &addr, increment, 1);
+  if (__vm_allocate (__mach_task_self (), &addr, increment, 1))
+    return NULL;
   return (void *) addr;
 }