Date: Tue, 8 Nov 2011 02:41:00 +0000 (GMT) From: Robert Watson <rwatson@FreeBSD.org> To: Maxim Sobolev <sobomax@FreeBSD.org> Cc: freebsd-net@freebsd.org, "Bjoern A. Zeeb" <bz@FreeBSD.ORG>, Jack Vogel <jfvogel@gmail.com> Subject: Re: Panic in the udp_input() under heavy load Message-ID: <alpine.BSF.2.00.1111080239500.1358@fledge.watson.org> In-Reply-To: <4EB86FCF.3050306@FreeBSD.org> References: <4EB804D2.2090101@FreeBSD.org> <alpine.BSF.2.00.1111071818250.4603@ai.fobar.qr> <4EB86276.6080801@sippysoft.com> <4EB86866.9060102@sippysoft.com> <alpine.BSF.2.00.1111072324340.4603@ai.fobar.qr> <4EB86FCF.3050306@FreeBSD.org>
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On Mon, 7 Nov 2011, Maxim Sobolev wrote:
> On 11/7/2011 3:25 PM, Bjoern A. Zeeb wrote:
>> Now if you are clever you'd also log the inp there as the above will only
>> prove the case that something is wrong but still not help us in anything to
>> figure out what.
>
> Good point, thank you Sir.
>
> Would that be good enough?
>
> printf("BZZT! Something is terribly wrong, up == NULL! inp = %p\n", inp);
>
> Do you think of any other useful piece of information that I can log at this
> point?
Hi Maxim:
There was recently a commit to fix a race condition in 10-CURRENT which I
think is not slated to be merged for 9.0. You might check the commit logs
there and see if that fixes the problems you have -- if so, we might want to
reconsider the plan not to merge for 9.0.
(It relates to a race condition on closing sockets..)
Robert
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