mirror of
https://github.com/crosstool-ng/crosstool-ng.git
synced 2024-12-22 14:12:26 +00:00
67 lines
2.0 KiB
Diff
67 lines
2.0 KiB
Diff
|
With latest versions of glibc, a lot of apps failed on a PaX enabled
|
||
|
|
system with:
|
||
|
|
cannot enable executable stack as shared object requires: Permission denied
|
||
|
|
|
||
|
|
This is due to PaX 'exec-protecting' the stack, and ld.so then trying
|
||
|
|
to make the stack executable due to some libraries not containing the
|
||
|
|
PT_GNU_STACK section. Bug #32960. <azarah@gentoo.org> (12 Nov 2003).
|
||
|
|
|
||
|
|
Patch also NPTL. Bug #116086. <kevquinn@gentoo.org> (20 Dec 2005).
|
||
|
|
|
||
|
|
diff -durN glibc-2.10.1.orig/nptl/allocatestack.c glibc-2.10.1/nptl/allocatestack.c
|
||
|
|
--- glibc-2.10.1.orig/nptl/allocatestack.c 2009-01-29 21:34:16.000000000 +0100
|
||
|
|
+++ glibc-2.10.1/nptl/allocatestack.c 2009-11-13 00:50:33.000000000 +0100
|
||
|
|
@@ -326,7 +326,8 @@
|
||
|
|
# error "Define either _STACK_GROWS_DOWN or _STACK_GROWS_UP"
|
||
|
|
#endif
|
||
|
|
if (mprotect (stack, len, PROT_READ | PROT_WRITE | PROT_EXEC) != 0)
|
||
|
|
- return errno;
|
||
|
|
+ if (errno != EACCES) /* PAX is enabled */
|
||
|
|
+ return errno;
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
diff -durN glibc-2.10.1.orig/sysdeps/unix/sysv/linux/dl-execstack.c glibc-2.10.1/sysdeps/unix/sysv/linux/dl-execstack.c
|
||
|
|
--- glibc-2.10.1.orig/sysdeps/unix/sysv/linux/dl-execstack.c 2006-01-08 09:21:15.000000000 +0100
|
||
|
|
+++ glibc-2.10.1/sysdeps/unix/sysv/linux/dl-execstack.c 2009-11-13 00:50:33.000000000 +0100
|
||
|
|
@@ -63,7 +63,10 @@
|
||
|
|
else
|
||
|
|
# endif
|
||
|
|
{
|
||
|
|
- result = errno;
|
||
|
|
+ if (errno == EACCES) /* PAX is enabled */
|
||
|
|
+ result = 0;
|
||
|
|
+ else
|
||
|
|
+ result = errno;
|
||
|
|
goto out;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
@@ -89,7 +92,12 @@
|
||
|
|
page -= size;
|
||
|
|
else
|
||
|
|
{
|
||
|
|
- if (errno != ENOMEM) /* Unexpected failure mode. */
|
||
|
|
+ if (errno == EACCES) /* PAX is enabled */
|
||
|
|
+ {
|
||
|
|
+ result = 0;
|
||
|
|
+ goto out;
|
||
|
|
+ }
|
||
|
|
+ else if (errno != ENOMEM) /* Unexpected failure mode. */
|
||
|
|
{
|
||
|
|
result = errno;
|
||
|
|
goto out;
|
||
|
|
@@ -115,7 +123,12 @@
|
||
|
|
page += size;
|
||
|
|
else
|
||
|
|
{
|
||
|
|
- if (errno != ENOMEM) /* Unexpected failure mode. */
|
||
|
|
+ if (errno == EACCES) /* PAX is enabled */
|
||
|
|
+ {
|
||
|
|
+ result = 0;
|
||
|
|
+ goto out;
|
||
|
|
+ }
|
||
|
|
+ else if (errno != ENOMEM) /* Unexpected failure mode. */
|
||
|
|
{
|
||
|
|
result = errno;
|
||
|
|
goto out;
|