The patch below does not apply to the 3.16-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <[email protected]>.

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

>From 8d74ea0edb83a57f793a55bb7360a17af8ade5d1 Mon Sep 17 00:00:00 2001
From: Markos Chandras <[email protected]>
Date: Thu, 24 Jul 2014 12:10:01 +0100
Subject: [PATCH] MIPS: syscall: Fix AUDIT value for O32 processes on MIPS64

On MIPS64, O32 processes set both TIF_32BIT_ADDR and
TIF_32BIT_REGS so the previous condition treated O32 applications
as N32 when evaluating seccomp filters. Fix the condition to check
both TIF_32BIT_{REGS, ADDR} for the N32 AUDIT flag.

Signed-off-by: Markos Chandras <[email protected]>
Patchwork: http://patchwork.linux-mips.org/patch/7480/
Cc: <[email protected]> # v3.15+
Signed-off-by: James Hogan <[email protected]>

diff --git a/arch/mips/include/asm/syscall.h b/arch/mips/include/asm/syscall.h
index 17960fe7a8ce..cdf68b33bd65 100644
--- a/arch/mips/include/asm/syscall.h
+++ b/arch/mips/include/asm/syscall.h
@@ -131,10 +131,12 @@ static inline int syscall_get_arch(void)
 {
        int arch = EM_MIPS;
 #ifdef CONFIG_64BIT
-       if (!test_thread_flag(TIF_32BIT_REGS))
+       if (!test_thread_flag(TIF_32BIT_REGS)) {
                arch |= __AUDIT_ARCH_64BIT;
-       if (test_thread_flag(TIF_32BIT_ADDR))
-               arch |= __AUDIT_ARCH_CONVENTION_MIPS64_N32;
+               /* N32 sets only TIF_32BIT_ADDR */
+               if (test_thread_flag(TIF_32BIT_ADDR))
+                       arch |= __AUDIT_ARCH_CONVENTION_MIPS64_N32;
+       }
 #endif
 #if defined(__LITTLE_ENDIAN)
        arch |=  __AUDIT_ARCH_LE;

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