From: Olaf Kirch Date: Wed, 18 Apr 2007 22:07:22 +0000 (-0700) Subject: [IrDA]: Correctly handling socket error X-Git-Tag: v2.6.21~59 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=bfb6709d0b239af5e3ce5859aae926e1b79ba84b;p=linux-2.6 [IrDA]: Correctly handling socket error This patch fixes an oops first reported in mid 2006 - see http://lkml.org/lkml/2006/8/29/358 The cause of this bug report is that when an error is signalled on the socket, irda_recvmsg_stream returns without removing a local wait_queue variable from the socket's sk_sleep queue. This causes havoc further down the road. In response to this problem, a patch was made that invoked sock_orphan on the socket when receiving a disconnect indication. This is not a good fix, as this sets sk_sleep to NULL, causing applications sleeping in recvmsg (and other places) to oops. This is against the latest net-2.6 and should be considered for -stable inclusion. Signed-off-by: Olaf Kirch Signed-off-by: Samuel Ortiz Signed-off-by: David S. Miller --- diff --git a/net/irda/af_irda.c b/net/irda/af_irda.c index eabd6838f5..0eb7d596d4 100644 --- a/net/irda/af_irda.c +++ b/net/irda/af_irda.c @@ -138,7 +138,6 @@ static void irda_disconnect_indication(void *instance, void *sap, sk->sk_shutdown |= SEND_SHUTDOWN; sk->sk_state_change(sk); - sock_orphan(sk); release_sock(sk); /* Close our TSAP. @@ -1446,7 +1445,7 @@ static int irda_recvmsg_stream(struct kiocb *iocb, struct socket *sock, */ ret = sock_error(sk); if (ret) - break; + ; else if (sk->sk_shutdown & RCV_SHUTDOWN) ; else if (noblock)