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From: Christoph Hellwig <hch@infradead.org>
To: Sergio Callegari <sergio.callegari@gmail.com>
Cc: Borislav Petkov <bp@alien8.de>, linux-kernel@vger.kernel.org
Subject: Re: IDE Floppy support for IOMEGA Zip Drive broken in 3.16 -> 3.17 transition
Date: Thu, 20 Aug 2015 01:08:46 -0700	[thread overview]
Message-ID: <20150820080846.GA11599@infradead.org> (raw)
In-Reply-To: <55D2E25C.7090201@gmail.com>

Hi Sergio,

On Tue, Aug 18, 2015 at 09:44:28AM +0200, Sergio Callegari wrote:
> Hi,
> 
> I have bisected the issue down to
> 
> [045065d8a300a37218c548e9aa7becd581c6a0e8] [SCSI] fix qemu boot hang problem
> 
> Bisecting has been a painful job due to the fact that the bug may show only
> many hours after the system boot.
> 
> The commit above in fact is not the culprit, but a fix to an issue that was
> hiding the real bug on my system.  See
> 
> http://marc.info/?l=linux-kernel&m=143973820612978&w=2
> 
> The real issue is with sata host lock and seems to be biting a few other
> people as well
> 
> https://bbs.archlinux.org/viewtopic.php?id=189324
> 
> A patch fixing the issue was sent to the LKML back in Nov 2014 by Christoph
> Hellwig (who is reading in CC)
> 
> https://lkml.org/lkml/2014/11/20/581
> 
> I have tested the patch and it works for me.
> 
> What is expected to happen now?

As mentioned in that thread we need more input from the libata people
on what kind of race this is papering over.

  reply	other threads:[~2015-08-20  8:08 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-06-25 20:58 IDE Floppy support for IOMEGA Zip Drive broken in 3.16 -> 3.17 transition Sergio Callegari
2015-06-25 21:31 ` Borislav Petkov
2015-08-18  7:44   ` Sergio Callegari
2015-08-20  8:08     ` Christoph Hellwig [this message]
2015-08-20 15:08       ` Sergio Callegari
2015-08-24 17:07       ` "scsi: convert host_busy to atomic_t" series causes regressions for some hardware configurations Sergio Callegari
2015-08-25 11:00         ` Christoph Hellwig
2015-08-26  7:14           ` Sergio Callegari
2015-08-30 10:54           ` Sergio Callegari
2015-09-07  7:31             ` Sergio Callegari
2015-09-07 17:51               ` Christoph Hellwig
2015-07-02 16:11 ` IDE Floppy support for IOMEGA Zip Drive broken in 3.16 -> 3.17 transition Ondrej Zary
2015-07-03  6:50   ` Sergio Callegari

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