linux-kernel - Re: ipmi_msghandler crashes in 4.19

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Message-ID: <CABWYdi3aN=7UCREjStzEaQdufb0Qs=wpbm=_ghP0cZe4C7GVrA@mail.gmail.com>
Date:   Tue, 22 Jan 2019 11:17:53 -0800
From:   Ivan Babrou <ivan@...udflare.com>
To:     Greg KH <gregkh@...uxfoundation.org>
Cc:     openipmi-developer@...ts.sourceforge.net,
        linux-kernel@...r.kernel.org, Corey Minyard <minyard@....org>,
        Ignat Korchagin <ignat@...udflare.com>
Subject: Re: ipmi_msghandler crashes in 4.19

We're going to try this, but crashes are really infrequent and our
stack is slightly different:

* We have RIP = __srcu_read_unlock on x86_64
* Patch mentions PC = __srcu_read_lock on aarch64


On Wed, Jan 16, 2019 at 7:49 AM Greg KH <gregkh@...uxfoundation.org> wrote:
>
> On Tue, Jan 15, 2019 at 10:36:42AM -0800, Ivan Babrou wrote:
> > Hey,
> >
> > We've upgraded some machines from 4.14 to 4.19 and started seeing rare
> > crashes like these:
>
> <snip>
>
> Does the fix posted here:
>         https://lore.kernel.org/lkml/1547616802-31868-1-git-send-email-yangyingliang@huawei.com/
>
> help resolve this?
>
> thanks,
>
> greg k-h