From 6787d3ecbef743ef446d79ce1a1de1f9f4a7ff04 Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Thu, 16 Feb 2017 01:44:37 +0100 Subject: [PATCH] ARM: 8658/1: uaccess: fix zeroing of 64-bit get_user() commit 9e3440481845b2ec22508f60837ee2cab2b6054f upstream. 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: Kees Cook Signed-off-by: Russell King Signed-off-by: Greg Kroah-Hartman --- arch/arm/lib/getuser.S | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/lib/getuser.S b/arch/arm/lib/getuser.S index 8ecfd15c3a02..df73914e81c8 100644 --- a/arch/arm/lib/getuser.S +++ b/arch/arm/lib/getuser.S @@ -67,7 +67,7 @@ ENTRY(__get_user_4) ENDPROC(__get_user_4) ENTRY(__get_user_8) - check_uaccess r0, 8, r1, r2, __get_user_bad + check_uaccess r0, 8, r1, r2, __get_user_bad8 #ifdef CONFIG_THUMB2_KERNEL 5: TUSER(ldr) r2, [r0] 6: TUSER(ldr) r3, [r0, #4] -- 2.34.1