diff options
| author |   Hong Zhiguo <honkiko@gmail.com> | 2013-03-26 01:52:45 +0800 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2013-03-25 13:55:38 -0400 |
| commit | a79ca223e029aa4f09abb337accf1812c900a800 (patch) | |
| tree | b5fab1ec8af42c3e31389d6a0db166a709c0ad18 /net | |
| parent | unix: fix a race condition in unix_release() (diff) | |
| download | linux-dev-a79ca223e029aa4f09abb337accf1812c900a800.tar.xz linux-dev-a79ca223e029aa4f09abb337accf1812c900a800.zip | |
ipv6: fix bad free of addrconf_init_net
Signed-off-by: Hong Zhiguo <honkiko@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
| -rw-r--r-- | net/ipv6/addrconf.c | 26 |
1 files changed, 10 insertions, 16 deletions
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index f2c7e615f902..26512250e095 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -4784,26 +4784,20 @@ static void addrconf_sysctl_unregister(struct inet6_dev *idev) static int __net_init addrconf_init_net(struct net *net) { - int err; + int err = -ENOMEM; struct ipv6_devconf *all, *dflt; - err = -ENOMEM; - all = &ipv6_devconf; - dflt = &ipv6_devconf_dflt; + all = kmemdup(&ipv6_devconf, sizeof(ipv6_devconf), GFP_KERNEL); + if (all == NULL) + goto err_alloc_all; - if (!net_eq(net, &init_net)) { - all = kmemdup(all, sizeof(ipv6_devconf), GFP_KERNEL); - if (all == NULL) - goto err_alloc_all; + dflt = kmemdup(&ipv6_devconf_dflt, sizeof(ipv6_devconf_dflt), GFP_KERNEL); + if (dflt == NULL) + goto err_alloc_dflt; - dflt = kmemdup(dflt, sizeof(ipv6_devconf_dflt), GFP_KERNEL); - if (dflt == NULL) - goto err_alloc_dflt; - } else { - /* these will be inherited by all namespaces */ - dflt->autoconf = ipv6_defaults.autoconf; - dflt->disable_ipv6 = ipv6_defaults.disable_ipv6; - } + /* these will be inherited by all namespaces */ + dflt->autoconf = ipv6_defaults.autoconf; + dflt->disable_ipv6 = ipv6_defaults.disable_ipv6; net->ipv6.devconf_all = all; net->ipv6.devconf_dflt = dflt; |