From: Ronnie Sahlberg lsahlber@redhat.com
[ Upstream commit fada37f6f62995cc449b36ebba1220594bfe55fe ]
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 Signed-off-by: Sasha Levin sashal@kernel.org --- fs/cifs/connect.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c index 4804d1df8c1cf..d4a23b48e24d8 100644 --- a/fs/cifs/connect.c +++ b/fs/cifs/connect.c @@ -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;