From: Xin Long <lucien.xin@gmail.com>
Date: Tue, 25 May 2021 02:49:42 +0000 (-0400)
Subject: sctp: fix the proc_handler for sysctl encap_port
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=b2540cdce6e22ecf3de54daf5129cc37951348cc;p=linux.git

sctp: fix the proc_handler for sysctl encap_port

proc_dointvec() cannot do min and max check for setting a value
when extra1/extra2 is set, so change it to proc_dointvec_minmax()
for sysctl encap_port.

Fixes: e8a3001c2120 ("sctp: add encap_port for netns sock asoc and transport")
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/sctp/sysctl.c b/net/sctp/sysctl.c
index e92df779af733..55871b277f475 100644
--- a/net/sctp/sysctl.c
+++ b/net/sctp/sysctl.c
@@ -307,7 +307,7 @@ static struct ctl_table sctp_net_table[] = {
 		.data		= &init_net.sctp.encap_port,
 		.maxlen		= sizeof(int),
 		.mode		= 0644,
-		.proc_handler	= proc_dointvec,
+		.proc_handler	= proc_dointvec_minmax,
 		.extra1		= SYSCTL_ZERO,
 		.extra2		= &udp_port_max,
 	},