linux-kernel - Re: Linux 3.14.58

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Date:	Tue, 22 Dec 2015 14:30:18 -0500
From:	Jason Baron <jbaron@...mai.com>
To:	Greg KH <gregkh@...uxfoundation.org>, guillaume@...infr.org
Cc:	linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	torvalds@...ux-foundation.org, stable@...r.kernel.org, lwn@....net,
	Jiri Slaby <jslaby@...e.cz>, Al Viro <viro@...iv.linux.org.uk>,
	mika.westerberg@...ux.intel.com
Subject: Re: Linux 3.14.58



On 12/22/2015 11:39 AM, Guillaume Morin wrote:
> Jason,
> 
> On 22 Dec 11:02, Jason Baron wrote:
>> We've noticed livelocks in shrink_dentry_list() very similar to this
>> report on stable 3.14.56:
>> http://lkml.iu.edu/hypermail/linux/kernel/1405.3/00470.html
>>
>> It appears that the patches that introduced this issue came into 3.14.51
>> in August with the same set of patches mentioned in the referenced
>> report. We unfortunately haven't narrowed down a reproducer, so I can't
>> bisect the issue, but 3.14.50 did not appear to have the issue.
>>
>> Upstream merge commit - 6f6111e4a73d0f6370eb8be4f8e4523210b6a67d (Pull
>> vfs dcache livelock fix from Al Viro) brought in a series to address
>> this issue. So that may be needed here as well...
> 
> FWIW I noticed the same thing.  The commits listed in
> http://www.spinics.net/lists/stable/msg111553.html fixed the problem for me.
> 
> I assume Greg will pick them up soon...
> 

Thanks for the info!

-Jason
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