This is a note to let you know that I've just added the patch titled
ARM: Ensure predictable endian state on signal handler entry
to the 2.6.32-longterm tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/longterm/longterm-queue-2.6.32.git;a=summary
The filename of the patch is:
arm-ensure-predictable-endian-state-on-signal-handler-entry.patch
and it can be found in the queue-2.6.32 subdirectory.
If you, or anyone else, feels it should not be added to the 2.6.32 longterm
tree,
please let <[email protected]> know about it.
>From 53399053eb505cf541b2405bd9d9bca5ecfb96fb Mon Sep 17 00:00:00 2001
From: Russell King <[email protected]>
Date: Sun, 20 Feb 2011 12:22:52 +0000
Subject: ARM: Ensure predictable endian state on signal handler entry
From: Russell King <[email protected]>
commit 53399053eb505cf541b2405bd9d9bca5ecfb96fb upstream.
Ensure a predictable endian state when entering signal handlers. This
avoids programs which use SETEND to momentarily switch their endian
state from having their signal handlers entered with an unpredictable
endian state.
Acked-by: Dave Martin <[email protected]>
Signed-off-by: Russell King <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
arch/arm/kernel/signal.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
--- a/arch/arm/kernel/signal.c
+++ b/arch/arm/kernel/signal.c
@@ -389,7 +389,9 @@ setup_return(struct pt_regs *regs, struc
unsigned long handler = (unsigned long)ka->sa.sa_handler;
unsigned long retcode;
int thumb = 0;
- unsigned long cpsr = regs->ARM_cpsr & ~PSR_f;
+ unsigned long cpsr = regs->ARM_cpsr & ~(PSR_f | PSR_E_BIT);
+
+ cpsr |= PSR_ENDSTATE;
/*
* Maybe we need to deliver a 32-bit signal to a 26-bit task.
Patches currently in longterm-queue-2.6.32 which might be from
[email protected] are
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