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2024-05-10 37f49e37ab4cb5d0bc4c60eb5c6d4dd57db767bb

 kernel/net/rose/af_rose.c
..
..
@@ -1,8 +1,5 @@
1
+// SPDX-License-Identifier: GPL-2.0-or-later
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2
 /*
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License as published by
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- * the Free Software Foundation; either version 2 of the License, or
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- * (at your option) any later version.
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3
  *
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4
  * Copyright (C) Jonathan Naylor G4KLX (g4klx@g4klx.demon.co.uk)
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5
  * Copyright (C) Alan Cox GW4PTS (alan@lxorguk.ukuu.org.uk)
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..
@@ -194,6 +191,7 @@
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 			rose_disconnect(s, ENETUNREACH, ROSE_OUT_OF_ORDER, 0);
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 			if (rose->neighbour)
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 				rose->neighbour->use--;
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+			dev_put(rose->device);
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 			rose->device = NULL;
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 		}
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 	}
..
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@@ -368,7 +366,7 @@
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366
  */
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367
 
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 static int rose_setsockopt(struct socket *sock, int level, int optname,
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-	char __user *optval, unsigned int optlen)
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+		sockptr_t optval, unsigned int optlen)
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370
 {
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 	struct sock *sk = sock->sk;
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 	struct rose_sock *rose = rose_sk(sk);
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..
@@ -380,7 +378,7 @@
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 	if (optlen < sizeof(int))
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 		return -EINVAL;
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380
 
383
-	if (get_user(opt, (int __user *)optval))
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+	if (copy_from_sockptr(&opt, optval, sizeof(int)))
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382
 		return -EFAULT;
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383
 
386
384
 	switch (optname) {
..
..
@@ -489,6 +487,12 @@
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 {
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 	struct sock *sk = sock->sk;
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489
 
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+	lock_sock(sk);
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+	if (sock->state != SS_UNCONNECTED) {
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+		release_sock(sk);
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+		return -EINVAL;
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+	}
495
+
492
496
 	if (sk->sk_state != TCP_LISTEN) {
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 		struct rose_sock *rose = rose_sk(sk);
494
498
 
..
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@@ -498,8 +502,10 @@
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 		memset(rose->dest_digis, 0, AX25_ADDR_LEN * ROSE_MAX_DIGIS);
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 		sk->sk_max_ack_backlog = backlog;
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 		sk->sk_state           = TCP_LISTEN;
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+		release_sock(sk);
501
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 		return 0;
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507
 	}
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+	release_sock(sk);
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509
 
504
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 	return -EOPNOTSUPP;
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511
 }
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@@ -594,6 +600,8 @@
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 	rose->idle	= orose->idle;
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 	rose->defer	= orose->defer;
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 	rose->device	= orose->device;
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+	if (rose->device)
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+		dev_hold(rose->device);
597
605
 	rose->qbitincl	= orose->qbitincl;
598
606
 
599
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 	return sk;
..
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@@ -647,6 +655,7 @@
647
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 		break;
648
656
 	}
649
657
 
658
+	dev_put(rose->device);
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 	sock->sk = NULL;
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 	release_sock(sk);
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 	sock_put(sk);
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@@ -689,8 +698,10 @@
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 		rose->source_call = user->call;
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 		ax25_uid_put(user);
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 	} else {
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-		if (ax25_uid_policy && !capable(CAP_NET_BIND_SERVICE))
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+		if (ax25_uid_policy && !capable(CAP_NET_BIND_SERVICE)) {
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+			dev_put(dev);
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 			return -EACCES;
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+		}
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 		rose->source_call   = *source;
695
706
 	}
696
707
 
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@@ -721,7 +732,6 @@
721
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 	struct rose_sock *rose = rose_sk(sk);
722
733
 	struct sockaddr_rose *addr = (struct sockaddr_rose *)uaddr;
723
734
 	unsigned char cause, diagnostic;
724
-	struct net_device *dev;
725
735
 	ax25_uid_assoc *user;
726
736
 	int n, err = 0;
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737
 
..
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@@ -778,9 +788,12 @@
778
788
 	}
779
789
 
780
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 	if (sock_flag(sk, SOCK_ZAPPED)) {	/* Must bind first - autobinding in this may or may not work */
791
+		struct net_device *dev;
792
+
781
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 		sock_reset_flag(sk, SOCK_ZAPPED);
782
794
 
783
-		if ((dev = rose_dev_first()) == NULL) {
795
+		dev = rose_dev_first();
796
+		if (!dev) {
784
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 			err = -ENETUNREACH;
785
798
 			goto out_release;
786
799
 		}
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@@ -788,6 +801,7 @@
788
801
 		user = ax25_findbyuid(current_euid());
789
802
 		if (!user) {
790
803
 			err = -EINVAL;
804
+			dev_put(dev);
791
805
 			goto out_release;
792
806
 		}
793
807
 
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@@ -929,7 +943,7 @@
929
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 	/* Now attach up the new socket */
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944
 	skb->sk = NULL;
931
945
 	kfree_skb(skb);
932
-	sk->sk_ack_backlog--;
946
+	sk_acceptq_removed(sk);
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947
 
934
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 out_release:
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949
 	release_sock(sk);
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@@ -1034,7 +1048,7 @@
1034
1048
 	make_rose->va        = 0;
1035
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 	make_rose->vr        = 0;
1036
1050
 	make_rose->vl        = 0;
1037
-	sk->sk_ack_backlog++;
1051
+	sk_acceptq_added(sk);
1038
1052
 
1039
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 	rose_insert_socket(make);
1040
1054
 
..
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@@ -1299,12 +1313,6 @@
1299
1313
 		return put_user(amount, (unsigned int __user *) argp);
1300
1314
 	}
1301
1315
 
1302
-	case SIOCGSTAMP:
1303
-		return sock_get_timestamp(sk, (struct timeval __user *) argp);
1304
-
1305
-	case SIOCGSTAMPNS:
1306
-		return sock_get_timestampns(sk, (struct timespec __user *) argp);
1307
-
1308
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 	case SIOCGIFADDR:
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 	case SIOCSIFADDR:
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1318
 	case SIOCGIFDSTADDR:
..
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@@ -1472,6 +1480,7 @@
1472
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 	.getname	=	rose_getname,
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 	.poll		=	datagram_poll,
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1482
 	.ioctl		=	rose_ioctl,
1483
+	.gettstamp	=	sock_gettstamp,
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 	.listen		=	rose_listen,
1476
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 	.shutdown	=	sock_no_shutdown,
1477
1486
 	.setsockopt	=	rose_setsockopt,
..
..
@@ -1503,7 +1512,7 @@
1503
1512
 	int rc;
1504
1513
 
1505
1514
 	if (rose_ndevs > 0x7FFFFFFF/sizeof(struct net_device *)) {
1506
-		printk(KERN_ERR "ROSE: rose_proto_init - rose_ndevs parameter to large\n");
1515
+		printk(KERN_ERR "ROSE: rose_proto_init - rose_ndevs parameter too large\n");
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 		rc = -EINVAL;
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1517
 		goto out;
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1518
 	}