Update Linux to v5.4.148
Sourced from [1]
[1] https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.4.148.tar.gz
Change-Id: Ib3d26c5ba9b022e2e03533005c4fed4d7c30b61b
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index ffd3262..2146372 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -147,29 +147,44 @@
skb_orphan(chunk->skb);
}
+#define traverse_and_process() \
+do { \
+ msg = chunk->msg; \
+ if (msg == prev_msg) \
+ continue; \
+ list_for_each_entry(c, &msg->chunks, frag_list) { \
+ if ((clear && asoc->base.sk == c->skb->sk) || \
+ (!clear && asoc->base.sk != c->skb->sk)) \
+ cb(c); \
+ } \
+ prev_msg = msg; \
+} while (0)
+
static void sctp_for_each_tx_datachunk(struct sctp_association *asoc,
+ bool clear,
void (*cb)(struct sctp_chunk *))
{
+ struct sctp_datamsg *msg, *prev_msg = NULL;
struct sctp_outq *q = &asoc->outqueue;
+ struct sctp_chunk *chunk, *c;
struct sctp_transport *t;
- struct sctp_chunk *chunk;
list_for_each_entry(t, &asoc->peer.transport_addr_list, transports)
list_for_each_entry(chunk, &t->transmitted, transmitted_list)
- cb(chunk);
+ traverse_and_process();
list_for_each_entry(chunk, &q->retransmit, transmitted_list)
- cb(chunk);
+ traverse_and_process();
list_for_each_entry(chunk, &q->sacked, transmitted_list)
- cb(chunk);
+ traverse_and_process();
list_for_each_entry(chunk, &q->abandoned, transmitted_list)
- cb(chunk);
+ traverse_and_process();
list_for_each_entry(chunk, &q->out_chunk_list, list)
- cb(chunk);
+ traverse_and_process();
}
static void sctp_for_each_rx_skb(struct sctp_association *asoc, struct sock *sk,
@@ -342,6 +357,18 @@
return af;
}
+static void sctp_auto_asconf_init(struct sctp_sock *sp)
+{
+ struct net *net = sock_net(&sp->inet.sk);
+
+ if (net->sctp.default_auto_asconf) {
+ spin_lock(&net->sctp.addr_wq_lock);
+ list_add_tail(&sp->auto_asconf_list, &net->sctp.auto_asconf_splist);
+ spin_unlock(&net->sctp.addr_wq_lock);
+ sp->do_auto_asconf = 1;
+ }
+}
+
/* Bind a local address either to an endpoint or to an association. */
static int sctp_do_bind(struct sock *sk, union sctp_addr *addr, int len)
{
@@ -403,8 +430,10 @@
return -EADDRINUSE;
/* Refresh ephemeral port. */
- if (!bp->port)
+ if (!bp->port) {
bp->port = inet_sk(sk)->inet_num;
+ sctp_auto_asconf_init(sp);
+ }
/* Add the address to the bind address list.
* Use GFP_ATOMIC since BHs will be disabled.
@@ -1304,7 +1333,7 @@
kaddrs = memdup_user(addrs, addrs_size);
if (IS_ERR(kaddrs))
- return PTR_ERR(kaddrs);
+ return PTR_ERR(kaddrs) == -EFAULT ? -EINVAL : PTR_ERR(kaddrs);
/* Allow security module to validate connectx addresses. */
err = security_sctp_bind_connect(sk, SCTP_SOCKOPT_CONNECTX,
@@ -5100,19 +5129,6 @@
sk_sockets_allocated_inc(sk);
sock_prot_inuse_add(net, sk->sk_prot, 1);
- /* Nothing can fail after this block, otherwise
- * sctp_destroy_sock() will be called without addr_wq_lock held
- */
- if (net->sctp.default_auto_asconf) {
- spin_lock(&sock_net(sk)->sctp.addr_wq_lock);
- list_add_tail(&sp->auto_asconf_list,
- &net->sctp.auto_asconf_splist);
- sp->do_auto_asconf = 1;
- spin_unlock(&sock_net(sk)->sctp.addr_wq_lock);
- } else {
- sp->do_auto_asconf = 0;
- }
-
local_bh_enable();
return 0;
@@ -8161,8 +8177,6 @@
pr_debug("%s: begins, snum:%d\n", __func__, snum);
- local_bh_disable();
-
if (snum == 0) {
/* Search for an available port. */
int low, high, remaining, index;
@@ -8181,20 +8195,21 @@
continue;
index = sctp_phashfn(sock_net(sk), rover);
head = &sctp_port_hashtable[index];
- spin_lock(&head->lock);
+ spin_lock_bh(&head->lock);
sctp_for_each_hentry(pp, &head->chain)
if ((pp->port == rover) &&
net_eq(sock_net(sk), pp->net))
goto next;
break;
next:
- spin_unlock(&head->lock);
+ spin_unlock_bh(&head->lock);
+ cond_resched();
} while (--remaining > 0);
/* Exhausted local port range during search? */
ret = 1;
if (remaining <= 0)
- goto fail;
+ return ret;
/* OK, here is the one we will use. HEAD (the port
* hash table list entry) is non-NULL and we hold it's
@@ -8209,7 +8224,7 @@
* port iterator, pp being NULL.
*/
head = &sctp_port_hashtable[sctp_phashfn(sock_net(sk), snum)];
- spin_lock(&head->lock);
+ spin_lock_bh(&head->lock);
sctp_for_each_hentry(pp, &head->chain) {
if ((pp->port == snum) && net_eq(pp->net, sock_net(sk)))
goto pp_found;
@@ -8309,10 +8324,7 @@
ret = 0;
fail_unlock:
- spin_unlock(&head->lock);
-
-fail:
- local_bh_enable();
+ spin_unlock_bh(&head->lock);
return ret;
}
@@ -9326,13 +9338,10 @@
static inline void sctp_copy_descendant(struct sock *sk_to,
const struct sock *sk_from)
{
- int ancestor_size = sizeof(struct inet_sock) +
- sizeof(struct sctp_sock) -
- offsetof(struct sctp_sock, pd_lobby);
+ size_t ancestor_size = sizeof(struct inet_sock);
- if (sk_from->sk_family == PF_INET6)
- ancestor_size += sizeof(struct ipv6_pinfo);
-
+ ancestor_size += sk_from->sk_prot->obj_size;
+ ancestor_size -= offsetof(struct sctp_sock, pd_lobby);
__inet_sk_copy_descendant(sk_to, sk_from, ancestor_size);
}
@@ -9394,6 +9403,8 @@
return err;
}
+ sctp_auto_asconf_init(newsp);
+
/* Move any messages in the old socket's receive queue that are for the
* peeled off association to the new socket's receive queue.
*/
@@ -9461,9 +9472,9 @@
* paths won't try to lock it and then oldsk.
*/
lock_sock_nested(newsk, SINGLE_DEPTH_NESTING);
- sctp_for_each_tx_datachunk(assoc, sctp_clear_owner_w);
+ sctp_for_each_tx_datachunk(assoc, true, sctp_clear_owner_w);
sctp_assoc_migrate(assoc, newsk);
- sctp_for_each_tx_datachunk(assoc, sctp_set_owner_w);
+ sctp_for_each_tx_datachunk(assoc, false, sctp_set_owner_w);
/* If the association on the newsk is already closed before accept()
* is called, set RCV_SHUTDOWN flag.