netfilter: ctnetlink: fix sleep in read-side lock section

Fix allocation with GFP_KERNEL in ctnetlink_create_conntrack() under
read-side lock sections.

This problem was introduced in 2.6.25.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 1 deletions

diff --git a/net/netfilter/nf_conntrack_netlink.c b/net/netfilter/nf_conntrack_netlink.c
index d1fb2f8555e8..a5b95ccb3ce7 100644
--- a/net/netfilter/nf_conntrack_netlink.c
+++ b/net/netfilter/nf_conntrack_netlink.c
@@ -1139,7 +1139,7 @@ ctnetlink_create_conntrack(struct nlattr *cda[],
         rcu_read_lock();
         helper = __nf_ct_helper_find(rtuple);
         if (helper) {
-                help = nf_ct_helper_ext_add(ct, GFP_KERNEL);
+                help = nf_ct_helper_ext_add(ct, GFP_ATOMIC);
                 if (help == NULL) {
                         rcu_read_unlock();
                         err = -ENOMEM;