xfrm_user_policy(): don't open-code memdup_user() (7f2d17c6) · Commits · e / devices / android_kernel_oneplus_sm7250

net/xfrm/xfrm_state.c

+3 −8

Original line number	Diff line number	Diff line
		@@ -2023,13 +2023,9 @@ int xfrm_user_policy(struct sock sk, int optname, u8 __user optval, int optlen
		if (optlen <= 0 \|\| optlen > PAGE_SIZE)
		return -EMSGSIZE;

		data = kmalloc(optlen, GFP_KERNEL);
		if (!data)
		return -ENOMEM;

		err = -EFAULT;
		if (copy_from_user(data, optval, optlen))
		goto out;
		data = memdup_user(optval, optlen);
		if (IS_ERR(data))
		return PTR_ERR(data);

		err = -EINVAL;
		rcu_read_lock();
		@@ -2047,7 +2043,6 @@ int xfrm_user_policy(struct sock sk, int optname, u8 __user optval, int optlen
		err = 0;
		}

		out:
		kfree(data);
		return err;
		}