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From: Anthony G. Basile <blueness@gentoo.org>
PAX_EMUTRAMP is needed for libffi to avoid RWX mmap-ings using PaX emulation of trampolines.
We default PAX_EMUTRAMP='y' since almost all hardened users will want this.
See bug:
http://bugs.gentoo.org/show_bug.cgi?id=329499
http://bugs.gentoo.org/show_bug.cgi?id=457194
diff -Naur linux-3.9.2-hardened.orig/security/Kconfig linux-3.9.2-hardened/security/Kconfig
--- linux-3.9.2-hardened.orig/security/Kconfig 2013-05-18 08:53:41.000000000 -0400
+++ linux-3.9.2-hardened/security/Kconfig 2013-05-18 09:17:57.000000000 -0400
@@ -429,7 +429,7 @@
config PAX_EMUTRAMP
bool "Emulate trampolines"
- default y if PARISC || GRKERNSEC_CONFIG_AUTO
+ default y
depends on (PAX_PAGEEXEC || PAX_SEGMEXEC) && (PARISC || X86)
help
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