linux-kernel - Re: 2.6.27.14: BUG: lock held when returning to user space!

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Message-Id: <1235579389.4645.3621.camel@laptop>
Date:	Wed, 25 Feb 2009 17:29:49 +0100
From:	Peter Zijlstra <peterz@...radead.org>
To:	Frank van Maarseveen <frankvm@...nkvm.com>
Cc:	linux-kernel@...r.kernel.org, dm-devel@...hat.com,
	Alasdair G Kergon <agk@...hat.com>
Subject: Re: 2.6.27.14: BUG: lock held when returning to user space!

On Wed, 2009-02-25 at 15:21 +0100, Frank van Maarseveen wrote:
> An lvextend -L+16G command for a logical volume while being mounted rw
> as ext3 triggered the following on 2.6.27.14:
> 
> ================================================
> [ BUG: lock held when returning to user space! ]
> ------------------------------------------------
> lvextend/29191 is leaving the kernel with locks still held!
> 2 locks held by lvextend/29191:
>  #0: (&type->s_umount_key #15){....}, at: [<c019edfb>] get_super+0x6b/0xb0
>  #1: (&journal->j_barrier){....}, at: [<c01f9af3>] journal_lock_updates+0xc3/0xd0

Do recent kernels still say this?

CC'ed lvm folks.

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