Update Linux to v5.10.109
Sourced from [1]
[1] https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.10.109.tar.xz
Change-Id: I19bca9fc6762d4e63bcf3e4cba88bbe560d9c76c
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
diff --git a/net/xfrm/xfrm_state.c b/net/xfrm/xfrm_state.c
index c6b2c99..1befc6d 100644
--- a/net/xfrm/xfrm_state.c
+++ b/net/xfrm/xfrm_state.c
@@ -611,7 +611,7 @@
{
struct xfrm_state *x;
- x = kmem_cache_alloc(xfrm_state_cache, GFP_ATOMIC | __GFP_ZERO);
+ x = kmem_cache_zalloc(xfrm_state_cache, GFP_ATOMIC);
if (x) {
write_pnet(&x->xs_net, net);
@@ -669,6 +669,9 @@
net->xfrm.state_num--;
spin_unlock(&net->xfrm.xfrm_state_lock);
+ if (x->encap_sk)
+ sock_put(rcu_dereference_raw(x->encap_sk));
+
xfrm_dev_state_delete(x);
/* All xfrm_state objects are created by xfrm_state_alloc.
@@ -1539,9 +1542,6 @@
memcpy(&x->mark, &orig->mark, sizeof(x->mark));
memcpy(&x->props.smark, &orig->props.smark, sizeof(x->props.smark));
- if (xfrm_init_state(x) < 0)
- goto error;
-
x->props.flags = orig->props.flags;
x->props.extra_flags = orig->props.extra_flags;
@@ -1554,6 +1554,9 @@
x->km.seq = orig->km.seq;
x->replay = orig->replay;
x->preplay = orig->preplay;
+ x->mapping_maxage = orig->mapping_maxage;
+ x->new_mapping = 0;
+ x->new_mapping_sport = 0;
return x;
@@ -1563,7 +1566,8 @@
return NULL;
}
-struct xfrm_state *xfrm_migrate_state_find(struct xfrm_migrate *m, struct net *net)
+struct xfrm_state *xfrm_migrate_state_find(struct xfrm_migrate *m, struct net *net,
+ u32 if_id)
{
unsigned int h;
struct xfrm_state *x = NULL;
@@ -1579,6 +1583,8 @@
continue;
if (m->reqid && x->props.reqid != m->reqid)
continue;
+ if (if_id != 0 && x->if_id != if_id)
+ continue;
if (!xfrm_addr_equal(&x->id.daddr, &m->old_daddr,
m->old_family) ||
!xfrm_addr_equal(&x->props.saddr, &m->old_saddr,
@@ -1594,6 +1600,8 @@
if (x->props.mode != m->mode ||
x->id.proto != m->proto)
continue;
+ if (if_id != 0 && x->if_id != if_id)
+ continue;
if (!xfrm_addr_equal(&x->id.daddr, &m->old_daddr,
m->old_family) ||
!xfrm_addr_equal(&x->props.saddr, &m->old_saddr,
@@ -1620,6 +1628,11 @@
if (!xc)
return NULL;
+ xc->props.family = m->new_family;
+
+ if (xfrm_init_state(xc) < 0)
+ goto error;
+
memcpy(&xc->id.daddr, &m->new_daddr, sizeof(xc->id.daddr));
memcpy(&xc->props.saddr, &m->new_saddr, sizeof(xc->props.saddr));
@@ -2205,7 +2218,7 @@
}
EXPORT_SYMBOL(km_query);
-int km_new_mapping(struct xfrm_state *x, xfrm_address_t *ipaddr, __be16 sport)
+static int __km_new_mapping(struct xfrm_state *x, xfrm_address_t *ipaddr, __be16 sport)
{
int err = -EINVAL;
struct xfrm_mgr *km;
@@ -2220,6 +2233,24 @@
rcu_read_unlock();
return err;
}
+
+int km_new_mapping(struct xfrm_state *x, xfrm_address_t *ipaddr, __be16 sport)
+{
+ int ret = 0;
+
+ if (x->mapping_maxage) {
+ if ((jiffies / HZ - x->new_mapping) > x->mapping_maxage ||
+ x->new_mapping_sport != sport) {
+ x->new_mapping_sport = sport;
+ x->new_mapping = jiffies / HZ;
+ ret = __km_new_mapping(x, ipaddr, sport);
+ }
+ } else {
+ ret = __km_new_mapping(x, ipaddr, sport);
+ }
+
+ return ret;
+}
EXPORT_SYMBOL(km_new_mapping);
void km_policy_expired(struct xfrm_policy *pol, int dir, int hard, u32 portid)
@@ -2294,17 +2325,74 @@
return is_alive;
}
-int xfrm_user_policy(struct sock *sk, int optname, u8 __user *optval, int optlen)
+#if IS_ENABLED(CONFIG_XFRM_USER_COMPAT)
+static DEFINE_SPINLOCK(xfrm_translator_lock);
+static struct xfrm_translator __rcu *xfrm_translator;
+
+struct xfrm_translator *xfrm_get_translator(void)
+{
+ struct xfrm_translator *xtr;
+
+ rcu_read_lock();
+ xtr = rcu_dereference(xfrm_translator);
+ if (unlikely(!xtr))
+ goto out;
+ if (!try_module_get(xtr->owner))
+ xtr = NULL;
+out:
+ rcu_read_unlock();
+ return xtr;
+}
+EXPORT_SYMBOL_GPL(xfrm_get_translator);
+
+void xfrm_put_translator(struct xfrm_translator *xtr)
+{
+ module_put(xtr->owner);
+}
+EXPORT_SYMBOL_GPL(xfrm_put_translator);
+
+int xfrm_register_translator(struct xfrm_translator *xtr)
+{
+ int err = 0;
+
+ spin_lock_bh(&xfrm_translator_lock);
+ if (unlikely(xfrm_translator != NULL))
+ err = -EEXIST;
+ else
+ rcu_assign_pointer(xfrm_translator, xtr);
+ spin_unlock_bh(&xfrm_translator_lock);
+
+ return err;
+}
+EXPORT_SYMBOL_GPL(xfrm_register_translator);
+
+int xfrm_unregister_translator(struct xfrm_translator *xtr)
+{
+ int err = 0;
+
+ spin_lock_bh(&xfrm_translator_lock);
+ if (likely(xfrm_translator != NULL)) {
+ if (rcu_access_pointer(xfrm_translator) != xtr)
+ err = -EINVAL;
+ else
+ RCU_INIT_POINTER(xfrm_translator, NULL);
+ }
+ spin_unlock_bh(&xfrm_translator_lock);
+ synchronize_rcu();
+
+ return err;
+}
+EXPORT_SYMBOL_GPL(xfrm_unregister_translator);
+#endif
+
+int xfrm_user_policy(struct sock *sk, int optname, sockptr_t optval, int optlen)
{
int err;
u8 *data;
struct xfrm_mgr *km;
struct xfrm_policy *pol = NULL;
- if (in_compat_syscall())
- return -EOPNOTSUPP;
-
- if (!optval && !optlen) {
+ if (sockptr_is_null(optval) && !optlen) {
xfrm_sk_policy_insert(sk, XFRM_POLICY_IN, NULL);
xfrm_sk_policy_insert(sk, XFRM_POLICY_OUT, NULL);
__sk_dst_reset(sk);
@@ -2314,10 +2402,26 @@
if (optlen <= 0 || optlen > PAGE_SIZE)
return -EMSGSIZE;
- data = memdup_user(optval, optlen);
+ data = memdup_sockptr(optval, optlen);
if (IS_ERR(data))
return PTR_ERR(data);
+ if (in_compat_syscall()) {
+ struct xfrm_translator *xtr = xfrm_get_translator();
+
+ if (!xtr) {
+ kfree(data);
+ return -EOPNOTSUPP;
+ }
+
+ err = xtr->xlate_user_policy_sockptr(&data, optlen);
+ xfrm_put_translator(xtr);
+ if (err) {
+ kfree(data);
+ return err;
+ }
+ }
+
err = -EINVAL;
rcu_read_lock();
list_for_each_entry_rcu(km, &xfrm_km_list, list) {
@@ -2440,7 +2544,7 @@
}
EXPORT_SYMBOL(xfrm_state_delete_tunnel);
-u32 __xfrm_state_mtu(struct xfrm_state *x, int mtu)
+u32 xfrm_state_mtu(struct xfrm_state *x, int mtu)
{
const struct xfrm_type *type = READ_ONCE(x->type);
struct crypto_aead *aead;
@@ -2471,17 +2575,7 @@
return ((mtu - x->props.header_len - crypto_aead_authsize(aead) -
net_adj) & ~(blksize - 1)) + net_adj - 2;
}
-EXPORT_SYMBOL_GPL(__xfrm_state_mtu);
-
-u32 xfrm_state_mtu(struct xfrm_state *x, int mtu)
-{
- mtu = __xfrm_state_mtu(x, mtu);
-
- if (x->props.family == AF_INET6 && mtu < IPV6_MIN_MTU)
- return IPV6_MIN_MTU;
-
- return mtu;
-}
+EXPORT_SYMBOL_GPL(xfrm_state_mtu);
int __xfrm_init_state(struct xfrm_state *x, bool init_replay, bool offload)
{