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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>
This commit is contained in:
Eric Dumazet 2017-10-23 16:17:48 -07:00 committed by David S. Miller
parent 3f27fb2321
commit 480318a0a4
1 changed files with 3 additions and 3 deletions
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6
net/ipv6/addrconf.c
View File

@ -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);