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Date: Thu, 29 Sep 2011 10:15:13 +0800
Message-ID: <CANf5e8Yt0CVjJn5WLMAbz2UyKr+O0jB2SfLTxWqzC8D4zy7rig@mail.gmail.com>
From: dave jones <s.dave.jones@gmail.com>
To: Mikolaj Golub <trociny@freebsd.org>
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Cc: "freebsd-net@freebsd.org" <freebsd-net@freebsd.org>,
	Adrian Chadd <adrian@freebsd.org>, "K. Macy" <kmacy@freebsd.org>,
	Arnaud Lacombe <lacombar@gmail.com>
Subject: Re: Kernel panic on FreeBSD 9.0-beta2
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2011/9/29 Mikolaj Golub :
>
> On Mon, 26 Sep 2011 16:12:55 +0200 K. Macy wrote:
>
> =A0KM> Sorry, didn't look at the images (limited bw), I've seen something
> =A0KM> like this before in timewait. This "can't happen" with UDP so will=
 be
> =A0KM> interested in learning more about the bug.
>
> The panic can be easily triggered by this:
>
>
>
> The other thread at that moment is in soclose->sofree->upd_detach->in_pcb=
free.
>
> It looks for me that we should call in_pcbdrop() in udp_close() to remove
> inpcb from hashed lists, like it is done for tcp_close().
>
> With this patch I don't observe the panic.

Hi Mikolaj,

You rock! Machines have been running hours without panic after
applying your patch.
You should commit the atch asap :-) Thank you for your help!

Best regards,
Dave.