Ipv4 net namespace requires a similar logic change as commit c900a800 [ipv6: fix bad free of addrconf_init_net] introduces for newer kernels.
Since a net namespace is independent to another. That is, there is no any relationship between the net namespaces. So a new net namespace should not inherit network configurations from another net namespace including the host. CC: Hong Zhiguo <honk...@gmail.com> CC: David S. Miller <da...@davemloft.net> Suggested-by: Cong Wang <cw...@twopensource.com> Signed-off-by: Zhu Yanjun <yanjun....@windriver.com> --- net/ipv4/devinet.c | 29 ++++++++++++----------------- 1 file changed, 12 insertions(+), 17 deletions(-) diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c index e944937..a16aa39 100644 --- a/net/ipv4/devinet.c +++ b/net/ipv4/devinet.c @@ -2220,28 +2220,23 @@ static __net_init int devinet_init_net(struct net *net) #endif err = -ENOMEM; - all = &ipv4_devconf; - dflt = &ipv4_devconf_dflt; - if (!net_eq(net, &init_net)) { - all = kmemdup(all, sizeof(ipv4_devconf), GFP_KERNEL); - if (all == NULL) - goto err_alloc_all; - - dflt = kmemdup(dflt, sizeof(ipv4_devconf_dflt), GFP_KERNEL); - if (dflt == NULL) - goto err_alloc_dflt; + all = kmemdup(&ipv4_devconf, sizeof(ipv4_devconf), GFP_KERNEL); + if (all == NULL) + goto err_alloc_all; + dflt = kmemdup(&ipv4_devconf_dflt, sizeof(ipv4_devconf_dflt), GFP_KERNEL); + if (dflt == NULL) + goto err_alloc_dflt; #ifdef CONFIG_SYSCTL - tbl = kmemdup(tbl, sizeof(ctl_forward_entry), GFP_KERNEL); - if (tbl == NULL) - goto err_alloc_ctl; + tbl = kmemdup(tbl, sizeof(ctl_forward_entry), GFP_KERNEL); + if (tbl == NULL) + goto err_alloc_ctl; - tbl[0].data = &all->data[IPV4_DEVCONF_FORWARDING - 1]; - tbl[0].extra1 = all; - tbl[0].extra2 = net; + tbl[0].data = &all->data[IPV4_DEVCONF_FORWARDING - 1]; + tbl[0].extra1 = all; + tbl[0].extra2 = net; #endif - } #ifdef CONFIG_SYSCTL err = __devinet_sysctl_register(net, "all", all); -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/