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Date: Tue, 23 Jul 2013 13:28:24 +0200
From: Andre Oppermann <andre@freebsd.org>
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To: "Andrey V. Elsukov" <ae@FreeBSD.org>
Subject: Re: IPSEC crashes after r253088
References: <20130721054323.915f865769e6042c7dc62d08@tackymt.homeip.net>
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Cc: George Neville-Neil <gnn@FreeBSD.org>,
 Taku YAMAMOTO <taku@tackymt.homeip.net>, freebsd-current@freebsd.org
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On 23.07.2013 09:28, Andrey V. Elsukov wrote:
> On 21.07.2013 00:43, Taku YAMAMOTO wrote:
>> After r253088, systems with IPSEC and KSTACK_PAGES < 4 crashes on
>> booting into multi-user mode.
>>
>> The crash is due to sysctl -a in /etc/rc.d/initrandom ended up with
>> kernel stack overflow.
>
>> where type is struct ipsecstat which is 12560 bytes of size (larger than
>> 3 pages) of size when processing net.inet.ipsec.ipsecstats.
>
> Hi,
>
> Only few fields of struct ipsecstat is used, the rest fields are never
> updated. We can split it to several structures, or just remove unused
> fields. What is better?

Not storing it on the stack?

-- 
Andre