netdev - Re: [Bugme-new] [Bug 13097] New: Kernel will freeze network after using a tun/tap device

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Message-ID: <20090417005842.GA30556@gondor.apana.org.au>
Date:	Fri, 17 Apr 2009 08:58:42 +0800
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	netdev@...r.kernel.org, maxk@...lcomm.com, vtun@...ice.satix.net,
	aabdulla@...dia.com, bugzilla-daemon@...zilla.kernel.org
Subject: Re: [Bugme-new] [Bug 13097] New: Kernel will freeze network after
	using a tun/tap device

Andrew Morton <akpm@...ux-foundation.org> wrote:
>
>> With 2.6.29 kernel everything works fine, but with 2.6.30-rc2, a simple ping to
>> a tun/tap device (for example ping to a vpn using openvpn) will freeze the
>> network. In X I can't even use the keyboard anymore.
>> 
>> It just happens with a tun/tap device, not with a normal ethernet device or a
>> normal internet connection.
>> 
>> If you think it's a tun/tap driver problem, please change the bug, but as I'm
>> not completely sure, I choose forcedeth.
> 
> An obvious question would be: are you able to test the same setup with
> a different type of network card?

Please get a stack backtrace of all processes on the machine after
the hang, e.g., with Ctrl-ScrollLock.

Thanks,
-- 
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Email: Herbert Xu ~{PmV>HI~} <herbert@...dor.apana.org.au>
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