Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

drivers/net/can/pch_can.c
  ae64438be192 ("can: dev: fix skb drop check")
  1dd1b521be85 ("can: remove obsolete PCH CAN driver")
https://lore.kernel.org/all/20221110102509.1f7d63cc@canb.auug.org.au/

Signed-off-by: Jakub Kicinski <kuba@kernel.org>

3 files changed, 25 insertions, 25 deletions

diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index d1779880b2a7..90d085290d49 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -4147,23 +4147,25 @@ struct sk_buff *skb_segment(struct sk_buff *head_skb,
 	int i = 0;
 	int pos;
 
-	if (list_skb && !list_skb->head_frag && skb_headlen(list_skb) &&
-	    (skb_shinfo(head_skb)->gso_type & SKB_GSO_DODGY)) {
-		/* gso_size is untrusted, and we have a frag_list with a linear
-		 * non head_frag head.
-		 *
-		 * (we assume checking the first list_skb member suffices;
-		 * i.e if either of the list_skb members have non head_frag
-		 * head, then the first one has too).
-		 *
-		 * If head_skb's headlen does not fit requested gso_size, it
-		 * means that the frag_list members do NOT terminate on exact
-		 * gso_size boundaries. Hence we cannot perform skb_frag_t page
-		 * sharing. Therefore we must fallback to copying the frag_list
-		 * skbs; we do so by disabling SG.
-		 */
-		if (mss != GSO_BY_FRAGS && mss != skb_headlen(head_skb))
-			features &= ~NETIF_F_SG;
+	if ((skb_shinfo(head_skb)->gso_type & SKB_GSO_DODGY) &&
+	    mss != GSO_BY_FRAGS && mss != skb_headlen(head_skb)) {
+		struct sk_buff *check_skb;
+
+		for (check_skb = list_skb; check_skb; check_skb = check_skb->next) {
+			if (skb_headlen(check_skb) && !check_skb->head_frag) {
+				/* gso_size is untrusted, and we have a frag_list with
+				 * a linear non head_frag item.
+				 *
+				 * If head_skb's headlen does not fit requested gso_size,
+				 * it means that the frag_list members do NOT terminate
+				 * on exact gso_size boundaries. Hence we cannot perform
+				 * skb_frag_t page sharing. Therefore we must fallback to
+				 * copying the frag_list skbs; we do so by disabling SG.
+				 */
+				features &= ~NETIF_F_SG;
+				break;
+			}
+		}
 	}
 
 	__skb_push(head_skb, doffset);
diff --git a/net/core/skmsg.c b/net/core/skmsg.c
index 1efdc47a999b..e6b9ced3eda8 100644
--- a/net/core/skmsg.c
+++ b/net/core/skmsg.c
@@ -803,16 +803,13 @@ static void sk_psock_link_destroy(struct sk_psock *psock)
 	}
 }
 
-void sk_psock_stop(struct sk_psock *psock, bool wait)
+void sk_psock_stop(struct sk_psock *psock)
 {
 	spin_lock_bh(&psock->ingress_lock);
 	sk_psock_clear_state(psock, SK_PSOCK_TX_ENABLED);
 	sk_psock_cork_free(psock);
 	__sk_psock_zap_ingress(psock);
 	spin_unlock_bh(&psock->ingress_lock);
-
-	if (wait)
-		cancel_work_sync(&psock->work);
 }
 
 static void sk_psock_done_strp(struct sk_psock *psock);
@@ -850,7 +847,7 @@ void sk_psock_drop(struct sock *sk, struct sk_psock *psock)
 		sk_psock_stop_verdict(sk, psock);
 	write_unlock_bh(&sk->sk_callback_lock);
 
-	sk_psock_stop(psock, false);
+	sk_psock_stop(psock);
 
 	INIT_RCU_WORK(&psock->rwork, sk_psock_destroy);
 	queue_rcu_work(system_wq, &psock->rwork);
diff --git a/net/core/sock_map.c b/net/core/sock_map.c
index a660baedd9e7..81beb16ab1eb 100644
--- a/net/core/sock_map.c
+++ b/net/core/sock_map.c
@@ -1596,7 +1596,7 @@ void sock_map_destroy(struct sock *sk)
 	saved_destroy = psock->saved_destroy;
 	sock_map_remove_links(sk, psock);
 	rcu_read_unlock();
-	sk_psock_stop(psock, false);
+	sk_psock_stop(psock);
 	sk_psock_put(sk, psock);
 	saved_destroy(sk);
 }
@@ -1619,9 +1619,10 @@ void sock_map_close(struct sock *sk, long timeout)
 	saved_close = psock->saved_close;
 	sock_map_remove_links(sk, psock);
 	rcu_read_unlock();
-	sk_psock_stop(psock, true);
-	sk_psock_put(sk, psock);
+	sk_psock_stop(psock);
 	release_sock(sk);
+	cancel_work_sync(&psock->work);
+	sk_psock_put(sk, psock);
 	saved_close(sk, timeout);
 }
 EXPORT_SYMBOL_GPL(sock_map_close);