From 17d4f9b183071c79d5e5926eb280637f3b8b0f20 Mon Sep 17 00:00:00 2001 From: Keir Fraser Date: Fri, 14 Aug 2009 17:05:54 +0100 Subject: [PATCH] net: Fix NULL pointer deref of sock->ops->Sendpage in sock_sendpage(). Signed-off-by: Keir Fraser --- net/socket.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/net/socket.c b/net/socket.c index 6d261bf2..a4af3833 100644 --- a/net/socket.c +++ b/net/socket.c @@ -698,7 +698,10 @@ static ssize_t sock_sendpage(struct file *file, struct page *page, if (more) flags |= MSG_MORE; - return sock->ops->sendpage(sock, page, offset, size, flags); + if (sock->ops->sendpage) + return sock->ops->sendpage(sock, page, offset, size, flags); + + return sock_no_sendpage(sock, page, offset, size, flags); } static struct sock_iocb *alloc_sock_iocb(struct kiocb *iocb, -- 2.39.5