From: Andrei Pelinescu-Onciul <andrei@iptel.org>
Date: Mon, 23 Nov 2009 20:54:01 +0000 (-0500)
Subject: sctp: limit maximum autoclose setsockopt value
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=f6778aab6ccc4b510b4dcfa770d9949b696b4545;p=linux-beck.git

sctp: limit maximum autoclose setsockopt value

To avoid overflowing the maximum timer interval when transforming
the  autoclose interval from seconds to jiffies, limit the maximum
autoclose value to MAX_SCHEDULE_TIMEOUT/HZ.

Signed-off-by: Andrei Pelinescu-Onciul <andrei@iptel.org>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
---

diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index d2681a6bc6fa..71513b3926a5 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -2086,6 +2086,9 @@ static int sctp_setsockopt_autoclose(struct sock *sk, char __user *optval,
 		return -EINVAL;
 	if (copy_from_user(&sp->autoclose, optval, optlen))
 		return -EFAULT;
+	/* make sure it won't exceed MAX_SCHEDULE_TIMEOUT */
+	if (sp->autoclose > (MAX_SCHEDULE_TIMEOUT / HZ) )
+		sp->autoclose = MAX_SCHEDULE_TIMEOUT / HZ ;
 
 	return 0;
 }