netdev - Re: [Bugme-new] [Bug 11571] New: u32

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Message-ID: <20080917220811.GA10893@ami.dom.local>
Date:	Thu, 18 Sep 2008 00:08:11 +0200
From:	Jarek Poplawski <jarkao2@...il.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	netdev@...r.kernel.org, bugme-daemon@...zilla.kernel.org,
	m0sia@...tinka.ru
Subject: Re: [Bugme-new] [Bug 11571] New: u32_classify Kernel Panic

On Wed, Sep 17, 2008 at 09:38:32PM +0200, Jarek Poplawski wrote:
...
> >> http://bugzilla.kernel.org/show_bug.cgi?id=11571
> Does this happen while creating or deleting something and is this
> easy to reproduce?

If accidentally there is any deleting around try this patch, please.

Jarek P.

---

 net/sched/cls_u32.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/net/sched/cls_u32.c b/net/sched/cls_u32.c
index 246f906..9912ad5 100644
--- a/net/sched/cls_u32.c
+++ b/net/sched/cls_u32.c
@@ -433,7 +433,9 @@ static int u32_delete(struct tcf_proto *tp, unsigned long arg)
 
 	if (ht->refcnt == 1) {
 		ht->refcnt--;
+		tcf_tree_lock(tp);
 		u32_destroy_hnode(tp, ht);
+		tcf_tree_unlock(tp);
 	} else {
 		return -EBUSY;
 	}
--
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