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To:     linux-kernel@vger.kernel.org
From:   "Andrey Jr. Melnikov" <temnota.am@gmail.com>
Subject: Re: ext4 file system corruption with v4.19.3 / v4.19.4
Date:   Thu, 13 Dec 2018 13:38:36 +0300
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In gmane.comp.file-systems.ext4 Pavel Machek <pavel@ucw.cz> wrote:
> [-- text/plain, ????????? quoted-printable, ?????????: us-ascii, 32 ????? --]

> Hi!

> > > >> OK, - and now we are looking forward to *your* ideas how to solve this.
> > > >
> > > > After four days playing games around git bisect - real winner is
> > > > debian gcc-8.2.0-9. Upgrade it to 8.2.0-10 or use 7.3.0-30 version for
> > > > same kernel + config - does not exhibit ext4 corruption.
> > > >
> > > > I think I hit this https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87859
> > > > with 8.2.0-9 version.
> > > >
> > > Good that it works for you. But others used gcc 5.4.0 or 6.3.0 and were
> > > hit anyway: https://bugzilla.kernel.org/show_bug.cgi?id=201685#c165
> > 
> > Depends on workload pattern. 4.19.5 built with 8.2.0-10 and 7.3.0-30 -
> > crashed after 4 hours of usage (previous build crash in 5 min).
> > So my assumption about broken gcc is wrong.

> Would it be possible to try vanilla 4.19? (Not stable?)

> I test vanilla and -next kernels every week or two, and did not have
> ext4 problems recently. I guess many kernel developers test mainline
> but not stable...

Fix already commited to stable/vanilla brances:
https://bugzilla.kernel.org/show_bug.cgi?id=201685#c314