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Subject: Re: Thinkpad X60: regression with 5.1-rc1 and 5.1-rc4
From:   Paolo Valente <paolo.valente@linaro.org>
In-Reply-To: <20190409163304.GA23829@amd>
Date:   Tue, 9 Apr 2019 18:35:35 +0200
Cc:     Jens Axboe <axboe@kernel.dk>,
        kernel list <linux-kernel@vger.kernel.org>,
        linux-block <linux-block@vger.kernel.org>, rjw@rjwysocki.net,
        lenb@kernel.org, linux-acpi@vger.kernel.org
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Message-Id: <F6306562-0022-4043-BBF8-13FE4872CA31@linaro.org>
References: <20190408173914.GA13260@amd>
 <678ab058-986c-9727-58d7-d3f5283e2225@kernel.dk> <20190409163304.GA23829@amd>
To:     Pavel Machek <pavel@ucw.cz>
Sender: linux-kernel-owner@vger.kernel.org
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> Il giorno 9 apr 2019, alle ore 18:33, Pavel Machek <pavel@ucw.cz> ha =
scritto:
>=20
> On Mon 2019-04-08 11:41:18, Jens Axboe wrote:
>> On 4/8/19 11:39 AM, Pavel Machek wrote:
>>> Hi!
>>>=20
>>> For some reason, Thinkpad X60 now crashes during boot. I see some
>>> weird backtraces, and it may be bfq related... or maybe ACPI idle.
>>>=20
>>> Does x86-32 work for you?
>>>=20
>>> Weird thing is, 5.1.0-rc3-next-20190408 boots here (but later has
>>> problems during resume, making it unusable, too). They may not have
>>> 100% same configs.
>=20
> I now noticed it said:
>=20
> EIP is in bfq_bfqq_expire
>=20
>> Can you try and revert:
>>=20
>> 9dee8b3b057e1
>>=20
>> and see if that helps?
>=20
> Yes, I tried and yes, it helps. What are the next steps?=20
>=20

Try my fix:

=
https://lore.kernel.org/linux-block/20190409191420.3f56d493@fire.localdoma=
in/T/#m30a14045e710b870f00f7c51cdaa7c403977b767

and cross your fingers :)

Thanks,
Paolo

> 									=
Pavel
>=20
> --=20
> (english) http://www.livejournal.com/~pavelmachek
> (cesky, pictures) =
http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html