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| author | Al Viro <viro@zeniv.linux.org.uk> | 2016-08-20 16:33:10 -0400 |
|---|---|---|
| committer | Jiri Slaby <jslaby@suse.cz> | 2016-09-29 11:14:37 +0200 |
| commit | b8d635cfa41503774d0655d2ad09b12e444167bd (patch) | |
| tree | 7cf765b7e98900548402383df593a612042b6e92 | |
| parent | 0ab16ba1cdfed30d4b96f723fad6aa1342fa6513 (diff) | |
| download | lwn-b8d635cfa41503774d0655d2ad09b12e444167bd.tar.gz lwn-b8d635cfa41503774d0655d2ad09b12e444167bd.zip | |
mn10300: copy_from_user() should zero on access_ok() failure...
commit ae7cc577ec2a4a6151c9e928fd1f595d953ecef1 upstream.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
| -rw-r--r-- | arch/mn10300/lib/usercopy.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/mn10300/lib/usercopy.c b/arch/mn10300/lib/usercopy.c index 7826e6c364e7..ce8899e5e171 100644 --- a/arch/mn10300/lib/usercopy.c +++ b/arch/mn10300/lib/usercopy.c @@ -9,7 +9,7 @@ * as published by the Free Software Foundation; either version * 2 of the Licence, or (at your option) any later version. */ -#include <asm/uaccess.h> +#include <linux/uaccess.h> unsigned long __generic_copy_to_user(void *to, const void *from, unsigned long n) @@ -24,6 +24,8 @@ __generic_copy_from_user(void *to, const void *from, unsigned long n) { if (access_ok(VERIFY_READ, from, n)) __copy_user_zeroing(to, from, n); + else + memset(to, 0, n); return n; } |