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author | Al Viro <viro@zeniv.linux.org.uk> | 2016-08-20 23:33:10 +0300 |
---|---|---|
committer | Sasha Levin <alexander.levin@verizon.com> | 2016-10-06 05:40:20 +0300 |
commit | 8260a515dd670f2994e50a7783ddbe75eb6d4e0d (patch) | |
tree | beb9af6f74a1ec80b3270d8e232c9573a9c62f2f | |
parent | f17364dd43ea3966bb068f94f40d23613e17aba0 (diff) | |
download | linux-8260a515dd670f2994e50a7783ddbe75eb6d4e0d.tar.xz |
mn10300: copy_from_user() should zero on access_ok() failure...
[ Upstream commit ae7cc577ec2a4a6151c9e928fd1f595d953ecef1 ]
Cc: stable@vger.kernel.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
-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; } |