From 5fff09bc141570cd15c118b097b17dec832b517f Mon Sep 17 00:00:00 2001 From: Max Filippov Date: Tue, 21 Jul 2020 15:00:35 -0700 Subject: xtensa: fix access check in csum_and_copy_from_user Commit d341659f470b ("xtensa: switch to providing csum_and_copy_from_user()") introduced access check, but incorrectly tested dst instead of src. Fix access_ok argument in csum_and_copy_from_user. Cc: Al Viro Fixes: d341659f470b ("xtensa: switch to providing csum_and_copy_from_user()") Signed-off-by: Max Filippov Signed-off-by: Al Viro --- arch/xtensa/include/asm/checksum.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch/xtensa') diff --git a/arch/xtensa/include/asm/checksum.h b/arch/xtensa/include/asm/checksum.h index d8292cc9ebdf..243a5fe79d3c 100644 --- a/arch/xtensa/include/asm/checksum.h +++ b/arch/xtensa/include/asm/checksum.h @@ -57,7 +57,7 @@ static inline __wsum csum_and_copy_from_user(const void __user *src, void *dst, int len, __wsum sum, int *err_ptr) { - if (access_ok(dst, len)) + if (access_ok(src, len)) return csum_partial_copy_generic((__force const void *)src, dst, len, sum, err_ptr, NULL); if (len) -- cgit v1.2.3