From: Chris Metcalf Date: Fri, 18 May 2012 17:33:24 +0000 (-0400) Subject: tilegx: enable SYSCALL_WRAPPERS support X-Git-Tag: v3.4~8^2 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=e6d9668e119af44ae5bcd5f1197174531458afe3;p=platform%2Fkernel%2Flinux-stable.git 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: Signed-off-by: Chris Metcalf --- diff --git a/arch/tile/Kconfig b/arch/tile/Kconfig index 96033e2..74239dd 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