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| author | Al Viro <viro@zeniv.linux.org.uk> | 2016-08-21 22:13:39 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-09-24 10:09:39 +0200 |
| commit | b1689ffd1ce1463c42aec0f7c5d704b7bfc5aaf5 (patch) | |
| tree | 5e203ec2cf7f39085e072eab66b16c222575ca58 | |
| parent | 90ad0e49614ea694c9e9e97d90c9687435f08d82 (diff) | |
| download | linux-b1689ffd1ce1463c42aec0f7c5d704b7bfc5aaf5.tar.gz | |
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: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -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" \ |