Commit 3dd3bf83 authored by YOSHIFUJI Hideaki's avatar YOSHIFUJI Hideaki Committed by David S. Miller

[IPV6]: Fix dead lock.

We need to relesae ifp->lock before we call addrconf_dad_stop(),
which will hold ifp->lock.
Signed-off-by: default avatarYOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent c162eeaa
...@@ -2467,9 +2467,11 @@ static void addrconf_dad_start(struct inet6_ifaddr *ifp, u32 flags) ...@@ -2467,9 +2467,11 @@ static void addrconf_dad_start(struct inet6_ifaddr *ifp, u32 flags)
return; return;
} }
if (idev->if_flags & IF_READY) if (idev->if_flags & IF_READY) {
addrconf_dad_kick(ifp); addrconf_dad_kick(ifp);
else { spin_unlock_bh(&ifp->lock);
} else {
spin_unlock_bh(&ifp->lock);
/* /*
* If the defice is not ready: * If the defice is not ready:
* - keep it tentative if it is a permanent address. * - keep it tentative if it is a permanent address.
...@@ -2478,8 +2480,6 @@ static void addrconf_dad_start(struct inet6_ifaddr *ifp, u32 flags) ...@@ -2478,8 +2480,6 @@ static void addrconf_dad_start(struct inet6_ifaddr *ifp, u32 flags)
in6_ifa_hold(ifp); in6_ifa_hold(ifp);
addrconf_dad_stop(ifp); addrconf_dad_stop(ifp);
} }
spin_unlock_bh(&ifp->lock);
out: out:
read_unlock_bh(&idev->lock); read_unlock_bh(&idev->lock);
} }
......
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