linux-kernel - Re: linux 4.1-rc7 deadlock

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Message-ID: <5576F3DA.7000106@monom.org>
Date:	Tue, 09 Jun 2015 16:10:34 +0200
From:	Daniel Wagner <wagi@...om.org>
To:	Morten Stevens <mstevens@...oraproject.org>,
	linux-kernel@...r.kernel.org
Subject: Re: linux 4.1-rc7 deadlock

Hi Morten,

On 06/09/2015 01:54 PM, Morten Stevens wrote:
> [   28.193327]  Possible unsafe locking scenario:
> 
> [   28.194297]        CPU0                    CPU1
> [   28.194774]        ----                    ----
> [   28.195254]   lock(&mm->mmap_sem);
> [   28.195709]                                lock(&xfs_dir_ilock_class);
> [   28.196174]                                lock(&mm->mmap_sem);
> [   28.196654]   lock(&isec->lock);
> [   28.197108]

[...]

> Any ideas?

I think you hit the same problem many have already reported:

https://lkml.org/lkml/2015/3/30/594

cheers,
daniel
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