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Commit 06aebfb7 authored by Herbert Xu's avatar Herbert Xu Committed by David S. Miller
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[IPV6]: The ifa lock is a BH lock 



The ifa lock is expected to be taken in BH context (by addrconf timers)
so we must disable BH when accessing it from user context.

Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 79860a9a

net/ipv6/addrconf.c

+2 −2
Original line number Diff line number Diff line
@@ -1909,11 +1909,11 @@ static int inet6_addr_add(int ifindex, struct in6_addr *pfx, int plen, 
	ifp = ipv6_add_addr(idev, pfx, plen, scope, ifa_flags);



	if (!IS_ERR(ifp)) {

		spin_lock(&ifp->lock);

		spin_lock_bh(&ifp->lock);

		ifp->valid_lft = valid_lft;

		ifp->prefered_lft = prefered_lft;

		ifp->tstamp = jiffies;

		spin_unlock(&ifp->lock);

		spin_unlock_bh(&ifp->lock);



		addrconf_dad_start(ifp, 0);

		in6_ifa_put(ifp);