diff options
| author | Al Viro <viro@zeniv.linux.org.uk> | 2016-08-21 22:13:39 -0400 |
|---|---|---|
| committer | Willy Tarreau <w@1wt.eu> | 2017-02-06 23:32:59 +0100 |
| commit | 60f0190e1114fad523eac306ea6d467fbf59c59d (patch) | |
| tree | a53643441e3ea1bf264ce33129f3a11e82691553 /arch | |
| parent | 643d0a2d2c3f77454a313c0e7999e1ce9a6363d2 (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: Willy Tarreau <w@1wt.eu>
Diffstat (limited to 'arch')
| -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" \ |