linux-kernel - Re: Crashes/hung tasks with z3pool under memory pressure

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Message-ID: <20180413175615.GA30242@roeck-us.net>
Date:   Fri, 13 Apr 2018 10:56:15 -0700
From:   Guenter Roeck <linux@...ck-us.net>
To:     Vitaly Wool <vitalywool@...il.com>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        mawilcox@...rosoft.com, asavery@...omium.org, gwendal@...omium.org
Subject: Re: Crashes/hung tasks with z3pool under memory pressure

On Fri, Apr 13, 2018 at 05:40:18PM +0000, Vitaly Wool wrote:
> On Fri, Apr 13, 2018, 7:35 PM Guenter Roeck <linux@...ck-us.net> wrote:
> 
> > On Fri, Apr 13, 2018 at 05:21:02AM +0000, Vitaly Wool wrote:
> > > Hi Guenter,
> > >
> > >
> > > Den fre 13 apr. 2018 kl 00:01 skrev Guenter Roeck <linux@...ck-us.net>:
> > >
> > > > Hi all,
> > >
> > > > we are observing crashes with z3pool under memory pressure. The kernel
> > > version
> > > > used to reproduce the problem is v4.16-11827-g5d1365940a68, but the
> > > problem was
> > > > also seen with v4.14 based kernels.
> > >
> > >
> > > just before I dig into this, could you please try reproducing the errors
> > > you see with https://patchwork.kernel.org/patch/10210459/ applied?
> > >
> >
> > As mentioned above, I tested with v4.16-11827-g5d1365940a68, which already
> > includes this patch.
> >
> 
> Bah. Sorry. Expect an update after the weekend.
> 
NP; easy to miss. Thanks a lot for looking into it.

Guenter