From 3dd3bf83574e38578fc9741c0e23e4fa7f7ff96e Mon Sep 17 00:00:00 2001
From: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Date: Fri, 23 Dec 2005 11:23:21 -0800
Subject: [PATCH] [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>
---
net/ipv6/addrconf.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index 510220f2ae8be..d805241e439cf 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -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);
}
--
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