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Message-ID: <20071123185906.GA23710@2ka.mipt.ru>
Date: Fri, 23 Nov 2007 21:59:06 +0300
From: Evgeniy Polyakov <johnpol@....mipt.ru>
To: Matt Mackall <mpm@...enic.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>,
Simon Arlott <simon@...e.lp0.eu>,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
netdev@...r.kernel.org, Ingo Molnar <mingo@...hat.com>
Subject: Re: 2.6.23 WARNING: at kernel/softirq.c:139 local_bh_enable()
On Fri, Nov 23, 2007 at 09:51:01PM +0300, Evgeniy Polyakov (johnpol@....mipt.ru) wrote:
> On Fri, Nov 23, 2007 at 09:48:51PM +0300, Evgeniy Polyakov (johnpol@....mipt.ru) wrote:
> > Stop, we are trying to free skb without destructor and catch connection
> > tracking, so it is not a solution. To fix the problem we need to check
> > if it is not netfilter related, kind of this (not tested), Simon please
> > give it a try:
>
> And to be really cool we need to bypass skbs with xfrm attached, since
> its freeing also assumes BH context.
What about compile options?
Signed-off-by: Evgeniy Polyakov <johnpol@....mipt.ru>
diff --git a/net/core/netpoll.c b/net/core/netpoll.c
index 758dafe..adb3c54 100644
--- a/net/core/netpoll.c
+++ b/net/core/netpoll.c
@@ -196,10 +196,25 @@ static void zap_completion_queue(void)
while (clist != NULL) {
struct sk_buff *skb = clist;
clist = clist->next;
- if (skb->destructor)
+ if (skb->destructor) {
dev_kfree_skb_any(skb); /* put this one back */
- else
- __kfree_skb(skb);
+ continue;
+ }
+
+#if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE)
+ if (skb->nfct || skb->nfct_reasm) {
+ dev_kfree_skb_any(skb); /* put this one back */
+ continue;
+ }
+#endif
+
+#ifdef CONFIG_XFRM
+ if (skb->sp) {
+ dev_kfree_skb_any(skb); /* put this one back */
+ continue;
+ }
+#endif
+ __kfree_skb(skb);
}
}
--
Evgeniy Polyakov
-
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