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Re: XFS causing stack overflow

To: Dave Chinner <david@xxxxxxxxxxxxx>
Subject: Re: XFS causing stack overflow
From: Andi Kleen <andi@xxxxxxxxxxxxxx>
Date: Sat, 10 Dec 2011 11:52:51 -0800
Cc: Christoph Hellwig <hch@xxxxxxxxxxxxx>, linux-mm@xxxxxxxxx, xfs@xxxxxxxxxxx, "Ryan C. England" <ryan.england@xxxxxxxxxxxxx>
In-reply-to: <20111209221956.GE14273__25752.826271537$1323469420$gmane$org@dastard> (Dave Chinner's message of "Sat, 10 Dec 2011 09:19:56 +1100")
References: <CAAnfqPAm559m-Bv8LkHARm7iBW5Kfs7NmjTFidmg-idhcOq4sQ@xxxxxxxxxxxxxx> <20111209115513.GA19994@xxxxxxxxxxxxx> <20111209221956.GE14273__25752.826271537$1323469420$gmane$org@dastard>
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/23.3 (gnu/linux)
Dave Chinner <david@xxxxxxxxxxxxx> writes:
>
> You forgot about interrupt stacking - that trace shows the system
> took an interrupt at the point of highest stack usage in the
> writeback call chain.... :/

The interrupts are always running on other stacks these days
(even 32bit got switched over).

-Andi
-- 
ak@xxxxxxxxxxxxxxx -- Speaking for myself only

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