linux-kernel - Re: kernel BUG at linux-3.16.7-ckt25/fs/dcache.c:2373!

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Message-ID: <57514B1C.3080506@univention.de>
Date:	Fri, 3 Jun 2016 11:17:16 +0200
From:	Philipp Hahn <hahn@...vention.de>
To:	"J. Bruce Fields" <bfields@...ldses.org>
Cc:	linux-fsdevel@...r.kernel.org,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: kernel BUG at linux-3.16.7-ckt25/fs/dcache.c:2373!

Hello,

Am 02.06.2016 um 22:02 schrieb J. Bruce Fields:
> On Thu, Jun 02, 2016 at 09:51:27AM +0200, Philipp Hahn wrote:
>> probably during heavy IO our file server crashed on a BUG_ON in dache.c,
>> probably triggered by NFS:
>>
>>> ------------[ cut here ]------------
>>> kernel BUG at /var/build/temp/tmp.BPql4ErveJ/pbuilder/linux-3.16.7-ckt25/fs/dcache.c:2373!
...
>> Our kernel is 3.16.7-ckt25 from Debian + ckt26 and ckt27 on top.
> 
> So this is the BUG_ON(!d_unhashed(..)) at the top of __d_rehash?  I
> don't know the -ckt kernels, and I don't have a BUG at line 2373 of
> dcache.c, or something else?

Yes, exactly that first line.

> There have been a lot of changes in the area since 3.16.7.

Too bad.
Any concrete hint or should I better spent my time convincing management
to install a newer Linux kernel?

Anyway, thank you for the response.

Philipp