ARM: 8658/1: uaccess: fix zeroing of 64-bit get_user()
The 64-bit get_user() wasn't clearing the high word due to a typo in the error handler. The exception handler entry was already correct, though. Noticed during recent usercopy test additions in lib/test_user_copy.c. Signed-off-by: NKees Cook <keescook@chromium.org> Cc: stable@vger.kernel.org Signed-off-by: NRussell King <rmk+kernel@armlinux.org.uk>
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