linux-kernel - Re: [5.2-rc1 regression]: nvme vs. hibernation

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Message-ID: <nycvar.YFH.7.76.1905271313520.1962@cbobk.fhfr.pm>
Date:   Mon, 27 May 2019 13:15:25 +0200 (CEST)
From:   Jiri Kosina <jikos@...nel.org>
To:     Dongli Zhang <dongli.zhang@...cle.com>
cc:     Keith Busch <kbusch@...nel.org>, Jens Axboe <axboe@...nel.dk>,
        Sagi Grimberg <sagi@...mberg.me>, linux-kernel@...r.kernel.org,
        linux-nvme@...ts.infradead.org,
        Keith Busch <keith.busch@...el.com>,
        Hannes Reinecke <hare@...e.de>, Christoph Hellwig <hch@....de>
Subject: Re: [5.2-rc1 regression]: nvme vs. hibernation

On Mon, 27 May 2019, Jiri Kosina wrote:

> > Looks this has been discussed in the past.
> > 
> > http://lists.infradead.org/pipermail/linux-nvme/2019-April/023234.html
> > 
> > I created a fix for a case but not good enough.
> > 
> > http://lists.infradead.org/pipermail/linux-nvme/2019-April/023277.html
> 
> That removes the warning, but I still seem to have ~1:1 chance of reboot 
> (triple fault?) immediately after hibernation image is read from disk. 
> Seems like that has been going all the way down to 4.19, which seems to be 
> rock stable. It's a bit hard to bisect, as I am not really 100% sure 
> whether this is one issue or two intermixed ones, and it doesn't reproduce 
> completely reliably.

So far this seems to be independent issue, related to kASLR, I'll look 
into that separately.

Still, we should either remove the warning or fix the underlying issue.

Thanks,

-- 
Jiri Kosina
SUSE Labs