linux-kernel - Re: 2.9.29.2: ide-tape: panic when probing device at boot

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Message-ID: <9ea470500905180618t3785d5e1s880c395896b9ba15@mail.gmail.com>
Date:	Mon, 18 May 2009 15:18:13 +0200
From:	Borislav Petkov <petkovbb@...glemail.com>
To:	Jonathan Woithe <jwoithe@...sics.adelaide.edu.au>
Cc:	Bartlomiej Zolnierkiewicz <bzolnier@...il.com>,
	linux-kernel@...r.kernel.org, linux-ide@...r.kernel.org,
	Tejun Heo <tj@...nel.org>
Subject: Re: 2.9.29.2: ide-tape: panic when probing device at boot

Small correction:

>> > > Should I just push commit 1e75540ec5202cae63cd238c86bd880e3d496546
>> > > ("ide-tape: remove back-to-back REQUEST_SENSE detection") to Linus
>> > > or there is more needed to bring ide-tape to the world of living?
>> >
>> > The oops will probably fixed the above commit.  I don't have much idea
>> > about the DMA problem on 2.6.24 tho.  But even with the above commit
>> > fixed, I doubt it would work.  The buffer allocation code is broken
>> > and reliably triggered OOM on my test machine.  While trying to locate
>> > the bug, I realized the complex code didn't do much good to begin with
>> > and just stripped it down, so I didn't actually tracked down the
>> > actual bug && the patch to simplify buffer management is way too large
>> > for 2.6.29, so unless someone is willing to hunt down the bug just for
>> > 2.6.29, we're kind of stuck.  :-(
>>
>> So I take it that 2.6.30 (or one of the RCs) is worth trying (at least in so
>> far as preventing the oops on boot)?
>
> You could try 30-rc6 which runs pretty stable on my machines. It has the
> patch mentioned above in it.

the patch mentioned above got actually merged after 30-rc6 so you could try
30-rc7 - if there will be one - or a current linux-next release.

Thanks.

-- 
Regards/Gruss,
Boris
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