From: "Serge Kuznetsov" <sk@deeptown.org>
To: "Arnaldo Carvalho de Melo" <acme@conectiva.com.br>
Cc: <linux-kernel@vger.kernel.org>, <linux-net@vger.kernel.org>
Subject: Re: [NET] Possible bug in netif_receive_skb
Date: Fri, 15 Nov 2002 09:10:24 -0500 [thread overview]
Message-ID: <007e01c28cb0$bde52900$9c094d8e@wcom.ca> (raw)
In-Reply-To: 20021114180022.GF14579@conectiva.com.br
> Em Thu, Nov 14, 2002 at 12:12:07PM -0500, Serge Kuznetsov escreveu:
>
> > PS: BTW, how to check if skb has been freed ? I didn't found any function for
> > it. Is it possible to add the flag, like skb->freed ?
>
> Enable slab poisoning.
>
Can I check if skb->users is not zero, it mean function hasn't been freed? Or just forget about it?
But what's happen if someone's ->func will return NET_RX_DROP, but not called the kfree_skb ? Is it not good to check for it?
Why should we trust for that function, may be someone forget to do it?
PS: Sorry, if my this questions hurts anyone, but for last almost 10 years, I'm using the Linux, I like it so much, and I want improve it and make it better, as much as possible.
All the Best!
Serge.
next prev parent reply other threads:[~2002-11-15 14:03 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-11-14 17:12 [NET] Possible bug in netif_receive_skb Serge Kuznetsov
2002-11-14 17:26 ` David S. Miller
2002-11-14 20:15 ` Serge Kuznetsov
2002-11-14 18:00 ` Arnaldo Carvalho de Melo
2002-11-15 14:10 ` Serge Kuznetsov [this message]
-- strict thread matches above, loose matches on Subject: below --
2002-11-14 21:05 Serge Kuznetsov
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