linux-kernel - [ 089/123] sctp: jsctp_sf_eat_sack: fix jprobes function signature mismatch

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Date:	Wed,  9 Jan 2013 12:35:28 -0800
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	alan@...rguk.ukuu.org.uk, Vlad Yasevich <vyasevich@...il.com>,
	Daniel Borkmann <dborkman@...hat.com>,
	"David S. Miller" <davem@...emloft.net>
Subject: [ 089/123] sctp: jsctp_sf_eat_sack: fix jprobes function signature mismatch

3.7-stable review patch.  If anyone has any objections, please let me know.

------------------


From: Daniel Borkmann <dborkman@...hat.com>

[ Upstream commit 4cb9d6eaf85ecdd266a9a5c6d825c56ca9eefc14 ]

Commit 24cb81a6a (sctp: Push struct net down into all of the
state machine functions) introduced the net structure into all
state machine functions, but jsctp_sf_eat_sack was not updated,
hence when SCTP association probing is enabled in the kernel,
any simple SCTP client/server program from userspace will panic
the kernel.

Cc: Vlad Yasevich <vyasevich@...il.com>
Signed-off-by: Daniel Borkmann <dborkman@...hat.com>
Acked-by: Vlad Yasevich <vyasevich@...il.com>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 net/sctp/probe.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/net/sctp/probe.c
+++ b/net/sctp/probe.c
@@ -122,7 +122,8 @@ static const struct file_operations sctp
 	.llseek = noop_llseek,
 };
 
-sctp_disposition_t jsctp_sf_eat_sack(const struct sctp_endpoint *ep,
+sctp_disposition_t jsctp_sf_eat_sack(struct net *net,
+				     const struct sctp_endpoint *ep,
 				     const struct sctp_association *asoc,
 				     const sctp_subtype_t type,
 				     void *arg,


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