Merge tag '6.13-rc3-SMB3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6

Pull smb client fixes from Steve French:

 - fix regression in display of write stats

 - fix rmmod failure with network namespaces

 - two minor cleanups

* tag '6.13-rc3-SMB3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6:
  smb: fix bytes written value in /proc/fs/cifs/Stats
  smb: client: fix TCP timers deadlock after rmmod
  smb: client: Deduplicate "select NETFS_SUPPORT" in Kconfig
  smb: use macros instead of constants for leasekey size and default cifsattrs value

Author: torvalds

fs/smb/client/Kconfig

@@ -2,7 +2,6 @@
 config CIFS
 	tristate "SMB3 and CIFS support (advanced network filesystem)"
 	depends on INET
-	select NETFS_SUPPORT
 	select NLS
 	select NLS_UCS2_UTILS
 	select CRYPTO

fs/smb/client/cifsfs.c

@@ -398,7 +398,7 @@ cifs_alloc_inode(struct super_block *sb)
 	cifs_inode = alloc_inode_sb(sb, cifs_inode_cachep, GFP_KERNEL);
 	if (!cifs_inode)
 		return NULL;
-	cifs_inode->cifsAttrs = 0x20;	/* default */
+	cifs_inode->cifsAttrs = ATTR_ARCHIVE;	/* default */
 	cifs_inode->time = 0;
 	/*
 	 * Until the file is open and we have gotten oplock info back from the

fs/smb/client/connect.c

@@ -987,9 +987,13 @@ clean_demultiplex_info(struct TCP_Server_Info *server)
 	msleep(125);
 	if (cifs_rdma_enabled(server))
 		smbd_destroy(server);
+
 	if (server->ssocket) {
 		sock_release(server->ssocket);
 		server->ssocket = NULL;
+
+		/* Release netns reference for the socket. */
+		put_net(cifs_net_ns(server));
 	}
 
 	if (!list_empty(&server->pending_mid_q)) {
@@ -1037,6 +1041,7 @@ clean_demultiplex_info(struct TCP_Server_Info *server)
 		 */
 	}
 
+	/* Release netns reference for this server. */
 	put_net(cifs_net_ns(server));
 	kfree(server->leaf_fullpath);
 	kfree(server);
@@ -1713,6 +1718,8 @@ cifs_get_tcp_session(struct smb3_fs_context *ctx,
 
 	tcp_ses->ops = ctx->ops;
 	tcp_ses->vals = ctx->vals;
+
+	/* Grab netns reference for this server. */
 	cifs_set_net_ns(tcp_ses, get_net(current->nsproxy->net_ns));
 
 	tcp_ses->conn_id = atomic_inc_return(&tcpSesNextId);
@@ -1844,6 +1851,7 @@ cifs_get_tcp_session(struct smb3_fs_context *ctx,
 out_err_crypto_release:
 	cifs_crypto_secmech_release(tcp_ses);
 
+	/* Release netns reference for this server. */
 	put_net(cifs_net_ns(tcp_ses));
 
 out_err:
@@ -1852,8 +1860,10 @@ cifs_get_tcp_session(struct smb3_fs_context *ctx,
 			cifs_put_tcp_session(tcp_ses->primary_server, false);
 		kfree(tcp_ses->hostname);
 		kfree(tcp_ses->leaf_fullpath);
-		if (tcp_ses->ssocket)
+		if (tcp_ses->ssocket) {
 			sock_release(tcp_ses->ssocket);
+			put_net(cifs_net_ns(tcp_ses));
+		}
 		kfree(tcp_ses);
 	}
 	return ERR_PTR(rc);
@@ -3131,20 +3141,20 @@ generic_ip_connect(struct TCP_Server_Info *server)
 		socket = server->ssocket;
 	} else {
 		struct net *net = cifs_net_ns(server);
-		struct sock *sk;
 
-		rc = __sock_create(net, sfamily, SOCK_STREAM,
-				   IPPROTO_TCP, &server->ssocket, 1);
+		rc = sock_create_kern(net, sfamily, SOCK_STREAM, IPPROTO_TCP, &server->ssocket);
 		if (rc < 0) {
 			cifs_server_dbg(VFS, "Error %d creating socket\n", rc);
 			return rc;
 		}
 
-		sk = server->ssocket->sk;
-		__netns_tracker_free(net, &sk->ns_tracker, false);
-		sk->sk_net_refcnt = 1;
-		get_net_track(net, &sk->ns_tracker, GFP_KERNEL);
-		sock_inuse_add(net, 1);
+		/*
+		 * Grab netns reference for the socket.
+		 *
+		 * It'll be released here, on error, or in clean_demultiplex_info() upon server
+		 * teardown.
+		 */
+		get_net(net);
 
 		/* BB other socket options to set KEEPALIVE, NODELAY? */
 		cifs_dbg(FYI, "Socket created\n");
@@ -3158,8 +3168,10 @@ generic_ip_connect(struct TCP_Server_Info *server)
 	}
 
 	rc = bind_socket(server);
-	if (rc < 0)
+	if (rc < 0) {
+		put_net(cifs_net_ns(server));
 		return rc;
+	}
 
 	/*
 	 * Eventually check for other socket options to change from
@@ -3196,6 +3208,7 @@ generic_ip_connect(struct TCP_Server_Info *server)
 	if (rc < 0) {
 		cifs_dbg(FYI, "Error %d connecting to server\n", rc);
 		trace_smb3_connect_err(server->hostname, server->conn_id, &server->dstaddr, rc);
+		put_net(cifs_net_ns(server));
 		sock_release(socket);
 		server->ssocket = NULL;
 		return rc;
@@ -3204,6 +3217,9 @@ generic_ip_connect(struct TCP_Server_Info *server)
 	if (sport == htons(RFC1001_PORT))
 		rc = ip_rfc1001_connect(server);
 
+	if (rc < 0)
+		put_net(cifs_net_ns(server));
+
 	return rc;
 }
 

fs/smb/client/smb2pdu.c

@@ -4840,6 +4840,8 @@ smb2_writev_callback(struct mid_q_entry *mid)
 		if (written > wdata->subreq.len)
 			written &= 0xFFFF;
 
+		cifs_stats_bytes_written(tcon, written);
+
 		if (written < wdata->subreq.len)
 			wdata->result = -ENOSPC;
 		else
@@ -5156,6 +5158,7 @@ SMB2_write(const unsigned int xid, struct cifs_io_parms *io_parms,
 		cifs_dbg(VFS, "Send error in write = %d\n", rc);
 	} else {
 		*nbytes = le32_to_cpu(rsp->DataLength);
+		cifs_stats_bytes_written(io_parms->tcon, *nbytes);
 		trace_smb3_write_done(0, 0, xid,
 				      req->PersistentFileId,
 				      io_parms->tcon->tid,
@@ -6204,7 +6207,7 @@ SMB2_lease_break(const unsigned int xid, struct cifs_tcon *tcon,
 	req->StructureSize = cpu_to_le16(36);
 	total_len += 12;
 
-	memcpy(req->LeaseKey, lease_key, 16);
+	memcpy(req->LeaseKey, lease_key, SMB2_LEASE_KEY_SIZE);
 	req->LeaseState = lease_state;
 
 	flags |= CIFS_NO_RSP_BUF;