netdev - [PATCH net] devinet: fix memleak in inetdev

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Message-ID: <1590809673-105923-1-git-send-email-yangyingliang@huawei.com>
Date:   Sat, 30 May 2020 11:34:33 +0800
From:   Yang Yingliang <yangyingliang@...wei.com>
To:     <xiyou.wangcong@...il.com>, <davem@...emloft.net>,
        <netdev@...r.kernel.org>
CC:     <yangyingliang@...wei.com>
Subject: [PATCH net] devinet: fix memleak in inetdev_init()

When devinet_sysctl_register() failed, the memory allocated
in neigh_parms_alloc() should be freed.

Fixes: 20e61da7ffcf ("ipv4: fail early when creating netdev named all or default")
Signed-off-by: Yang Yingliang <yangyingliang@...wei.com>
---
 net/ipv4/devinet.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c
index c0dd561..5267b6b 100644
--- a/net/ipv4/devinet.c
+++ b/net/ipv4/devinet.c
@@ -276,6 +276,7 @@ static struct in_device *inetdev_init(struct net_device *dev)
 	err = devinet_sysctl_register(in_dev);
 	if (err) {
 		in_dev->dead = 1;
+		neigh_parms_release(&arp_tbl, in_dev->arp_parms);
 		in_dev_put(in_dev);
 		in_dev = NULL;
 		goto out;
-- 
1.8.3