netdev - [PATCH net] sctp: fix the proc_handler for sysctl encap

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Message-Id: <deeba1bfa2edb3f83fd1b8ad3bf6b6f5bce264dd.1621910982.git.lucien.xin@gmail.com>
Date:   Mon, 24 May 2021 22:49:42 -0400
From:   Xin Long <lucien.xin@...il.com>
To:     network dev <netdev@...r.kernel.org>, davem@...emloft.net,
        kuba@...nel.org, linux-sctp@...r.kernel.org
Cc:     Marcelo Ricardo Leitner <marcelo.leitner@...il.com>
Subject: [PATCH net] 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@...il.com>
---
 net/sctp/sysctl.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/sctp/sysctl.c b/net/sctp/sysctl.c
index e92df779af73..55871b277f47 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,
 	},
-- 
2.27.0