Patch "locking/refcounts: Do not force refcount_t usage as GPL-only export" has been added to the 4.14-stable tree

Patch "locking/refcounts: Do not force refcount_t usage as GPL-only export" has been added to the 4.14-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    locking/refcounts: Do not force refcount_t usage as GPL-only export

to the 4.14-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     locking-refcounts-do-not-force-refcount_t-usage-as-gpl-only-export.patch
and it can be found in the queue-4.14 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From b562c171cf011d297059bd0265742eb5fab0ad2f Mon Sep 17 00:00:00 2001
From: Kees Cook <keescook@chromium.org>
Date: Mon, 4 Dec 2017 17:24:54 -0800
Subject: locking/refcounts: Do not force refcount_t usage as GPL-only export

From: Kees Cook <keescook@chromium.org>

commit b562c171cf011d297059bd0265742eb5fab0ad2f upstream.

The refcount_t protection on x86 was not intended to use the stricter
GPL export. This adjusts the linkage again to avoid a regression in
the availability of the refcount API.

Reported-by: Dave Airlie <airlied@gmail.com>
Fixes: 7a46ec0e2f48 ("locking/refcounts, x86/asm: Implement fast refcount overflow protection")
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Ivan Kozik <ivan@ludios.org>
Cc: Thomas Backlund <tmb@mageia.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 arch/x86/mm/extable.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/x86/mm/extable.c
+++ b/arch/x86/mm/extable.c
@@ -82,7 +82,7 @@ bool ex_handler_refcount(const struct ex
 
 	return true;
 }
-EXPORT_SYMBOL_GPL(ex_handler_refcount);
+EXPORT_SYMBOL(ex_handler_refcount);
 
 /*
  * Handler for when we fail to restore a task's FPU state.  We should never get


Patches currently in stable-queue which might be from keescook@chromium.org are

queue-4.14/locking-refcounts-x86-asm-use-unique-.text-section-for-refcount-exceptions.patch
queue-4.14/locking-refcounts-x86-asm-enable-config_arch_has_refcount.patch
queue-4.14/locking-refcounts-do-not-force-refcount_t-usage-as-gpl-only-export.patch