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

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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>
This commit is contained in:
Kees Cook 2017-12-04 17:24:54 -08:00 committed by Greg Kroah-Hartman
parent de667b08c3
commit c3b0874866
1 changed files with 1 additions and 1 deletions
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arch/x86/mm/extable.c
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@ -82,7 +82,7 @@ bool ex_handler_refcount(const struct exception_table_entry *fixup,
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