ipv6: addrconf: do not block BH in ipv6_chk_addr_and_flags()
rcu_read_lock() is enough here, as inet6_ifa_finish_destroy()
uses kfree_rcu()
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index d70d981..a6cf37b 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -1844,7 +1844,7 @@ int ipv6_chk_addr_and_flags(struct net *net, const struct in6_addr *addr,
struct inet6_ifaddr *ifp;
u32 ifp_flags;
- rcu_read_lock_bh();
+ rcu_read_lock();
hlist_for_each_entry_rcu(ifp, &inet6_addr_lst[hash], addr_lst) {
if (!net_eq(dev_net(ifp->idev->dev), net))
continue;
@@ -1858,12 +1858,12 @@ int ipv6_chk_addr_and_flags(struct net *net, const struct in6_addr *addr,
!(ifp_flags&banned_flags) &&
(!dev || ifp->idev->dev == dev ||
!(ifp->scope&(IFA_LINK|IFA_HOST) || strict))) {
- rcu_read_unlock_bh();
+ rcu_read_unlock();
return 1;
}
}
- rcu_read_unlock_bh();
+ rcu_read_unlock();
return 0;
}
EXPORT_SYMBOL(ipv6_chk_addr_and_flags);