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[IPV6]: Fix dead lock. 

We need to relesae ifp->lock before we call addrconf_dad_stop(),
which will hold ifp->lock.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
YOSHIFUJI Hideaki 2005-12-23 11:23:21 -08:00 committed by David S. Miller
parent c162eeaa21
commit 3dd3bf8357
1 changed files with 4 additions and 4 deletions
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8
net/ipv6/addrconf.c
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@ -2467,9 +2467,11 @@ static void addrconf_dad_start(struct inet6_ifaddr *ifp, u32 flags)
return;
}
if (idev->if_flags & IF_READY)
if (idev->if_flags & IF_READY) {
addrconf_dad_kick(ifp);
else {
spin_unlock_bh(&ifp->lock);
} else {
spin_unlock_bh(&ifp->lock);
/*
* If the defice is not ready:
* - keep it tentative if it is a permanent address.
@ -2478,8 +2480,6 @@ static void addrconf_dad_start(struct inet6_ifaddr *ifp, u32 flags)
in6_ifa_hold(ifp);
addrconf_dad_stop(ifp);
}
spin_unlock_bh(&ifp->lock);
out:
read_unlock_bh(&idev->lock);
}