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authorChris Metcalf <cmetcalf@tilera.com>2012-05-18 13:33:24 -0400
committerChris Metcalf <cmetcalf@tilera.com>2012-05-18 13:33:24 -0400
commite6d9668e119af44ae5bcd5f1197174531458afe3 (patch)
tree0a5b85053d76c2523e79719152ca1fdccbb4349c
parenta134d228298c6aa9007205c6b81cae0cac0acb5d (diff)
downloadlinux-stericsson-e6d9668e119af44ae5bcd5f1197174531458afe3.tar.gz
tilegx: enable SYSCALL_WRAPPERS support
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. Cc: <stable@vger.kernel.org> Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
-rw-r--r--arch/tile/Kconfig1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/tile/Kconfig b/arch/tile/Kconfig
index 96033e2d6845..74239dd77e06 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