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Commit cc9ab60e authored by Steffen Klassert's avatar Steffen Klassert
Browse files

xfrm: Cleanup error handling of xfrm_state_clone 



The error pointer passed to xfrm_state_clone() is unchecked,
so remove it and indicate an error by returning a null pointer.

Signed-off-by: default avatarSteffen Klassert <steffen.klassert@secunet.com>
parent d2c5f658

net/xfrm/xfrm_state.c

+5 −11
Original line number Diff line number Diff line
@@ -1148,10 +1148,9 @@ out: 
EXPORT_SYMBOL(xfrm_state_add);



#ifdef CONFIG_XFRM_MIGRATE

static struct xfrm_state *xfrm_state_clone(struct xfrm_state *orig, int *errp)

static struct xfrm_state *xfrm_state_clone(struct xfrm_state *orig)

{

	struct net *net = xs_net(orig);

	int err = -ENOMEM;

	struct xfrm_state *x = xfrm_state_alloc(net);

	if (!x)

		goto out;
@@ -1200,15 +1199,13 @@ static struct xfrm_state *xfrm_state_clone(struct xfrm_state *orig, int *errp) 
	}



	if (orig->replay_esn) {

		err = xfrm_replay_clone(x, orig);

		if (err)

		if (xfrm_replay_clone(x, orig))

			goto error;

	}



	memcpy(&x->mark, &orig->mark, sizeof(x->mark));



	err = xfrm_init_state(x);

	if (err)

	if (xfrm_init_state(x) < 0)

		goto error;



	x->props.flags = orig->props.flags;
@@ -1223,8 +1220,6 @@ static struct xfrm_state *xfrm_state_clone(struct xfrm_state *orig, int *errp) 
 error:

	xfrm_state_put(x);

out:

	if (errp)

		*errp = err;

	return NULL;

}
@@ -1276,9 +1271,8 @@ struct xfrm_state *xfrm_state_migrate(struct xfrm_state *x, 
				      struct xfrm_migrate *m)

{

	struct xfrm_state *xc;

	int err;



	xc = xfrm_state_clone(x, &err);

	xc = xfrm_state_clone(x);

	if (!xc)

		return NULL;
@@ -1291,7 +1285,7 @@ struct xfrm_state *xfrm_state_migrate(struct xfrm_state *x, 
		   state is to be updated as it is a part of triplet */

		xfrm_state_insert(xc);

	} else {

		if ((err = xfrm_state_add(xc)) < 0)

		if (xfrm_state_add(xc) < 0)

			goto error;

	}