* Jesse Brandeburg <[email protected]> wrote:
> well, when running e1000 through some code paths on FC4 +
> 2.6.17-rc5-mm1 + ingo's latest rollup patch, with this lockdep debug
> option enabled I got this:
>
> e1000: eth1: e1000_watchdog_task: NIC Link is Up 1000 Mbps Full Duplex
>
> ======================================
> [ BUG: bad unlock ordering detected! ]
> --------------------------------------
> mDNSResponder/2361 is trying to release lock (&in_dev->mc_list_lock) at:
> [<ffffffff81233f5a>] ip_mc_add_src+0x85/0x1f8
ok, could you try the patch below? (i also updated the rollup with this
fix)
Ingo
---------------------
Subject: lock validator: special locking: net/ipv4/igmp.c #2
From: Ingo Molnar <[email protected]>
another case of non-nested unlocking igmp.c.
Signed-off-by: Ingo Molnar <[email protected]>
---
net/ipv4/igmp.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
Index: linux/net/ipv4/igmp.c
===================================================================
--- linux.orig/net/ipv4/igmp.c
+++ linux/net/ipv4/igmp.c
@@ -1646,7 +1646,7 @@ static int ip_mc_add_src(struct in_devic
return -ESRCH;
}
spin_lock_bh(&pmc->lock);
- read_unlock(&in_dev->mc_list_lock);
+ read_unlock_non_nested(&in_dev->mc_list_lock);
#ifdef CONFIG_IP_MULTICAST
sf_markstate(pmc);
-
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