diff options
| author | Al Viro <viro@zeniv.linux.org.uk> | 2016-08-21 22:13:39 -0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2016-09-13 17:50:13 -0400 |
| commit | c2f18fa4cbb3ad92e033a24efa27583978ce9600 (patch) | |
| tree | 623b1209df74e6777cff21805d4ac71d18009e2c | |
| parent | fd2d2b191fe75825c4c7a6f12f3fef35aaed7dd7 (diff) | |
score: fix __get_user/get_user
* should zero on any failure
* __get_user() should use __copy_from_user(), not copy_from_user()
Cc: stable@vger.kernel.org
Signed-off-by: Al Viro <viro@zeniv.linux.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 20a3591225cc..c5d43111a5cc 100644 --- a/arch/score/include/asm/uaccess.h +++ b/arch/score/include/asm/uaccess.h @@ -163,7 +163,7 @@ 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; \ @@ -188,6 +188,8 @@ do { \ \ if (likely(access_ok(VERIFY_READ, __gu_ptr, size))) \ __get_user_common((x), size, __gu_ptr); \ + else \ + (x) = 0; \ \ __gu_err; \ }) @@ -201,6 +203,7 @@ 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" \ |