diff options
| author | Al Viro <viro@zeniv.linux.org.uk> | 2016-08-21 22:13:39 -0400 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2016-11-20 01:17:29 +0000 |
| commit | 788f151d6361b4663d629a11ae67c2522272abd0 (patch) | |
| tree | 3bcc0c835c0caa07dfd5bc63ed3dc3700e820ec1 | |
| parent | 93317dcbec95973fe9caca81c7f8fbad9fc260e3 (diff) | |
score: fix __get_user/get_user
commit c2f18fa4cbb3ad92e033a24efa27583978ce9600 upstream.
* should zero on any failure
* __get_user() should use __copy_from_user(), not copy_from_user()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
| -rw-r--r-- | arch/score/include/asm/uaccess.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/arch/score/include/asm/uaccess.h b/arch/score/include/asm/uaccess.h index ab66ddde777b..c882d961e5b8 100644 --- a/arch/score/include/asm/uaccess.h +++ b/arch/score/include/asm/uaccess.h @@ -158,7 +158,7 @@ do { \ __get_user_asm(val, "lw", ptr); \ break; \ case 8: \ - if ((copy_from_user((void *)&val, ptr, 8)) == 0) \ + if (__copy_from_user((void *)&val, ptr, 8) == 0) \ __gu_err = 0; \ else \ __gu_err = -EFAULT; \ @@ -183,6 +183,8 @@ do { \ \ if (likely(access_ok(VERIFY_READ, __gu_ptr, size))) \ __get_user_common((x), size, __gu_ptr); \ + else \ + (x) = 0; \ \ __gu_err; \ }) @@ -196,6 +198,7 @@ do { \ "2:\n" \ ".section .fixup,\"ax\"\n" \ "3:li %0, %4\n" \ + "li %1, 0\n" \ "j 2b\n" \ ".previous\n" \ ".section __ex_table,\"a\"\n" \ |