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-rw-r--r--sysdeps/unix/sysv/linux/dl-execstack.c26
1 files changed, 21 insertions, 5 deletions
diff --git a/sysdeps/unix/sysv/linux/dl-execstack.c b/sysdeps/unix/sysv/linux/dl-execstack.c
index 6ef9679045..b38d0c4238 100644
--- a/sysdeps/unix/sysv/linux/dl-execstack.c
+++ b/sysdeps/unix/sysv/linux/dl-execstack.c
@@ -1,5 +1,5 @@
/* Stack executability handling for GNU dynamic linker. Linux version.
- Copyright (C) 2003, 2004 Free Software Foundation, Inc.
+ Copyright (C) 2003, 2004, 2005 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@@ -24,6 +24,7 @@
#include <stdbool.h>
#include <stackinfo.h>
#include <caller.h>
+#include <sysdep.h>
#include "kernel-features.h"
@@ -38,6 +39,7 @@ _dl_make_stack_executable (void **stack_endp)
/* This gives us the highest/lowest page that needs to be changed. */
uintptr_t page = ((uintptr_t) *stack_endp
& -(intptr_t) GLRO(dl_pagesize));
+ int result = 0;
/* Challenge the caller. */
if (__builtin_expect (__check_caller (RETURN_ADDRESS (0),
@@ -60,7 +62,10 @@ _dl_make_stack_executable (void **stack_endp)
no_growsupdown = true;
else
# endif
- return errno;
+ {
+ result = errno;
+ goto out;
+ }
}
#endif
@@ -85,7 +90,10 @@ _dl_make_stack_executable (void **stack_endp)
else
{
if (errno != ENOMEM) /* Unexpected failure mode. */
- return errno;
+ {
+ result = errno;
+ goto out;
+ }
if (size == GLRO(dl_pagesize))
/* We just tried to mprotect the top hole page and failed.
@@ -108,7 +116,10 @@ _dl_make_stack_executable (void **stack_endp)
else
{
if (errno != ENOMEM) /* Unexpected failure mode. */
- return errno;
+ {
+ result = errno;
+ goto out;
+ }
if (size == GLRO(dl_pagesize))
/* We just tried to mprotect the lowest hole page and failed.
@@ -133,6 +144,11 @@ _dl_make_stack_executable (void **stack_endp)
/* Remember that we changed the permission. */
GL(dl_stack_flags) |= PF_X;
- return 0;
+ out:
+#ifdef check_consistency
+ check_consistency ();
+#endif
+
+ return result;
}
rtld_hidden_def (_dl_make_stack_executable)