From: Eric Dumazet Date: Mon, 27 Sep 2010 23:56:46 +0000 (+0000) Subject: ipip: fix percpu stats accounting X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=fada5636fe41fd1423fe4e6af7b9f609378acde6;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git ipip: fix percpu stats accounting commit 3c97af99a5aa1 (ipip: percpu stats accounting) forgot the fallback tunnel case (tunl0), and can crash pretty fast. Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- diff --git a/net/ipv4/ipip.c b/net/ipv4/ipip.c index 12b6fde6f65a..9e78f11da786 100644 --- a/net/ipv4/ipip.c +++ b/net/ipv4/ipip.c @@ -789,7 +789,7 @@ static int ipip_tunnel_init(struct net_device *dev) return 0; } -static void __net_init ipip_fb_tunnel_init(struct net_device *dev) +static int __net_init ipip_fb_tunnel_init(struct net_device *dev) { struct ip_tunnel *tunnel = netdev_priv(dev); struct iphdr *iph = &tunnel->parms.iph; @@ -802,8 +802,13 @@ static void __net_init ipip_fb_tunnel_init(struct net_device *dev) iph->protocol = IPPROTO_IPIP; iph->ihl = 5; + dev->tstats = alloc_percpu(struct pcpu_tstats); + if (!dev->tstats) + return -ENOMEM; + dev_hold(dev); rcu_assign_pointer(ipn->tunnels_wc[0], tunnel); + return 0; } static struct xfrm_tunnel ipip_handler __read_mostly = { @@ -852,7 +857,9 @@ static int __net_init ipip_init_net(struct net *net) } dev_net_set(ipn->fb_tunnel_dev, net); - ipip_fb_tunnel_init(ipn->fb_tunnel_dev); + err = ipip_fb_tunnel_init(ipn->fb_tunnel_dev); + if (err) + goto err_reg_dev; if ((err = register_netdev(ipn->fb_tunnel_dev))) goto err_reg_dev; @@ -860,7 +867,7 @@ static int __net_init ipip_init_net(struct net *net) return 0; err_reg_dev: - free_netdev(ipn->fb_tunnel_dev); + ipip_dev_free(ipn->fb_tunnel_dev); err_alloc_dev: /* nothing */ return err;