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meta-ti/recipes-kernel/linux/linux-ti33x-psp-3.2/3.2.19/0015-tilegx-enable-SYSCALL_WRAPPERS-support.patch
Koen Kooi 189ce92b4c linux-ti33x-psp 3.2: update to 3.2.21, add libertas fixes
Signed-off-by: Koen Kooi <koen@dominion.thruhere.net>
Signed-off-by: Denys Dmytriyenko <denys@ti.com>
2012-07-25 20:23:44 -04:00

40 lines
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From 7f297eaca9b90a9be05ebe02c90efca3692136db Mon Sep 17 00:00:00 2001
From: Chris Metcalf <cmetcalf@tilera.com>
Date: Fri, 18 May 2012 13:33:24 -0400
Subject: [PATCH 015/117] tilegx: enable SYSCALL_WRAPPERS support
commit e6d9668e119af44ae5bcd5f1197174531458afe3 upstream.
Some discussion with the glibc mailing lists revealed that this was
necessary for 64-bit platforms with MIPS-like sign-extension rules
for 32-bit values. The original symptom was that passing (uid_t)-1 to
setreuid() was failing in programs linked -pthread because of the "setxid"
mechanism for passing setxid-type function arguments to the syscall code.
SYSCALL_WRAPPERS handles ensuring that all syscall arguments end up with
proper sign-extension and is thus the appropriate fix for this problem.
On other platforms (s390, powerpc, sparc64, and mips) this was fixed
in 2.6.28.6. The general issue is tracked as CVE-2009-0029.
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
arch/tile/Kconfig | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/tile/Kconfig b/arch/tile/Kconfig
index 7c9d2d4..6cb8319 100644
--- a/arch/tile/Kconfig
+++ b/arch/tile/Kconfig
@@ -11,6 +11,7 @@ config TILE
select GENERIC_IRQ_PROBE
select GENERIC_PENDING_IRQ if SMP
select GENERIC_IRQ_SHOW
+ select HAVE_SYSCALL_WRAPPERS if TILEGX
select SYS_HYPERVISOR
select ARCH_HAVE_NMI_SAFE_CMPXCHG
--
1.7.9.5