From d2659e583eb32fddea4f27a346de84f88be6119f Mon Sep 17 00:00:00 2001 From: Al Viro Date: Wed, 22 Apr 2020 23:02:16 -0400 Subject: [PATCH] efi_test: get rid of pointless access_ok() really, people - get_user(), copy_from_user(), memdup_user(), etc. all fail if access_ok() does. Signed-off-by: Al Viro --- drivers/firmware/efi/test/efi_test.c | 12 ------------ 1 file changed, 12 deletions(-) diff --git a/drivers/firmware/efi/test/efi_test.c b/drivers/firmware/efi/test/efi_test.c index 7baf48c01e72..ddf9eae396fe 100644 --- a/drivers/firmware/efi/test/efi_test.c +++ b/drivers/firmware/efi/test/efi_test.c @@ -70,9 +70,6 @@ copy_ucs2_from_user_len(efi_char16_t **dst, efi_char16_t __user *src, return 0; } - if (!access_ok(src, 1)) - return -EFAULT; - buf = memdup_user(src, len); if (IS_ERR(buf)) { *dst = NULL; @@ -91,9 +88,6 @@ copy_ucs2_from_user_len(efi_char16_t **dst, efi_char16_t __user *src, static inline int get_ucs2_strsize_from_user(efi_char16_t __user *src, size_t *len) { - if (!access_ok(src, 1)) - return -EFAULT; - *len = user_ucs2_strsize(src); if (*len == 0) return -EFAULT; @@ -118,9 +112,6 @@ copy_ucs2_from_user(efi_char16_t **dst, efi_char16_t __user *src) { size_t len; - if (!access_ok(src, 1)) - return -EFAULT; - len = user_ucs2_strsize(src); if (len == 0) return -EFAULT; @@ -142,9 +133,6 @@ copy_ucs2_to_user_len(efi_char16_t __user *dst, efi_char16_t *src, size_t len) if (!src) return 0; - if (!access_ok(dst, 1)) - return -EFAULT; - return copy_to_user(dst, src, len); }