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path: root/fs/autofs4/dev-ioctl.c
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Diffstat (limited to 'fs/autofs4/dev-ioctl.c')
-rw-r--r--fs/autofs4/dev-ioctl.c13
1 files changed, 2 insertions, 11 deletions
diff --git a/fs/autofs4/dev-ioctl.c b/fs/autofs4/dev-ioctl.c
index d832062869f6..ba4a38b9c22f 100644
--- a/fs/autofs4/dev-ioctl.c
+++ b/fs/autofs4/dev-ioctl.c
@@ -95,7 +95,7 @@ static int check_dev_ioctl_version(int cmd, struct autofs_dev_ioctl *param)
*/
static struct autofs_dev_ioctl *copy_dev_ioctl(struct autofs_dev_ioctl __user *in)
{
- struct autofs_dev_ioctl tmp, *ads;
+ struct autofs_dev_ioctl tmp;
if (copy_from_user(&tmp, in, sizeof(tmp)))
return ERR_PTR(-EFAULT);
@@ -103,16 +103,7 @@ static struct autofs_dev_ioctl *copy_dev_ioctl(struct autofs_dev_ioctl __user *i
if (tmp.size < sizeof(tmp))
return ERR_PTR(-EINVAL);
- ads = kmalloc(tmp.size, GFP_KERNEL);
- if (!ads)
- return ERR_PTR(-ENOMEM);
-
- if (copy_from_user(ads, in, tmp.size)) {
- kfree(ads);
- return ERR_PTR(-EFAULT);
- }
-
- return ads;
+ return memdup_user(in, tmp.size);
}
static inline void free_dev_ioctl(struct autofs_dev_ioctl *param)