diff options
| -rw-r--r-- | fs/autofs4/dev-ioctl.c | 13 |
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) |