Commit fada37f6 authored Apr 21, 2020 by Ronnie Sahlberg Committed by Steve French Apr 21, 2020

cifs: protect updating server->dstaddr with a spinlock



We use a spinlock while we are reading and accessing the destination address for a server.
We need to also use this spinlock to protect when we are modifying this address from
reconn_set_ipaddr().

Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>

parent ae83d0b4

fs/cifs/connect.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -375,8 +375,10 @@ static int reconn_set_ipaddr(struct TCP_Server_Info *server)
		return rc;
		}

		spin_lock(&cifs_tcp_ses_lock);
		rc = cifs_convert_address((struct sockaddr *)&server->dstaddr, ipaddr,
		strlen(ipaddr));
		spin_unlock(&cifs_tcp_ses_lock);
		kfree(ipaddr);

		return !rc ? -1 : 0;

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