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Commit 640465bd authored by Ralf Baechle's avatar Ralf Baechle
Browse files

MIPS: Zero variable read by get_user / __get_user in case of an error. 



This wasn't happening in all cases.

Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
parent 51b1029d

arch/mips/include/asm/uaccess.h

+4 −1
Original line number Diff line number Diff line
@@ -301,7 +301,8 @@ do { \ 
			__get_kernel_common((x), size, __gu_ptr);	\

		else							\

			__get_user_common((x), size, __gu_ptr);		\

	}								\

	} else								\

		(x) = 0;						\

									\

	__gu_err;							\

})
@@ -316,6 +317,7 @@ do { \ 
	"	.insn						\n"	\

	"	.section .fixup,\"ax\"				\n"	\

	"3:	li	%0, %4					\n"	\

	"	move	%1, $0					\n"	\

	"	j	2b					\n"	\

	"	.previous					\n"	\

	"	.section __ex_table,\"a\"			\n"	\
@@ -630,6 +632,7 @@ do { \ 
	"	.insn						\n"	\

	"	.section .fixup,\"ax\"				\n"	\

	"3:	li	%0, %4					\n"	\

	"	move	%1, $0					\n"	\

	"	j	2b					\n"	\

	"	.previous					\n"	\

	"	.section __ex_table,\"a\"			\n"	\