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Date:      Mon, 3 Aug 2015 09:55:05 +0100
From:      Steven Hartland <killing@multiplay.co.uk>
To:        freebsd-stable@freebsd.org
Subject:   Re: KSTACK_PAGES stuck at 2 despite options KSTACK_PAGES=4
Message-ID:  <55BF2C69.6060801@multiplay.co.uk>
In-Reply-To: <alpine.BSF.2.20.1507312307400.1355@mail.fig.ol.no>
References:  <alpine.BSF.2.20.1507312307400.1355@mail.fig.ol.no>

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Thanks for the report Trond, I've reproduced this and am investigating.

On 31/07/2015 22:21, Trond Endrestøl wrote:
> stable/10, i386, r286139, 4 GiB RAM, custom kernel loudly claims:
>
> ZFS NOTICE: KSTACK_PAGES is 2 which could result in stack overflow panic!
> Please consider adding 'options KSTACK_PAGES=4' to your kernel config
>
> Well, my custom kernel config does contain:
>
> options KSTACK_PAGES=4
>
> and
>
> options ZFS
>
> sysctl kern.conftxt backs up my story:
>
> kern.conftxt: options  CONFIG_AUTOGENERATED
> ident   VBOX
> machine i386
> cpu     I686_CPU
> cpu     I586_CPU
> cpu     I486_CPU
> makeoptions     WITH_CTF=1
> makeoptions     DEBUG=-g
> options ZFS
> options KSTACK_PAGES=4 <---- !!!!!!
> options FDESCFS
> ...
>
> What more does it want?
>




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