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

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Message-ID: <20090709105549.GB3434@localdomain.by>
Date:	Thu, 9 Jul 2009 13:55:49 +0300
From:	Sergey Senozhatsky <sergey.senozhatsky@...l.by>
To:	Catalin Marinas <catalin.marinas@....com>
Cc:	Pekka Enberg <penberg@...helsinki.fi>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: Re: kmemeleak BUG: lock held when returning to user space!

On (07/09/09 11:47), Catalin Marinas wrote:
> Date: Thu, 09 Jul 2009 11:47:23 +0100
> From: Catalin Marinas <catalin.marinas@....com>
> To: Sergey Senozhatsky <sergey.senozhatsky@...l.by>
> Cc: Pekka Enberg <penberg@...helsinki.fi>,
> 	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
> 	linux-kernel@...r.kernel.org, linux-mm@...ck.org
> Subject: Re: kmemeleak BUG: lock held when returning to user space!
> User-Agent: Gnus/5.11 (Gnus v5.11) Emacs/22.1 (gnu/linux)
> 
> Sergey Senozhatsky <sergey.senozhatsky@...l.by> wrote:
> > kernel: [  149.507103] ================================================
> > kernel: [  149.507113] [ BUG: lock held when returning to user space! ]
> > kernel: [  149.507119] ------------------------------------------------
> > kernel: [  149.507127] cat/3279 is leaving the kernel with locks still held!
> > kernel: [  149.507135] 1 lock held by cat/3279:
> > kernel: [  149.507141]  #0:  (scan_mutex){+.+.+.}, at: [<c110707c>] kmemleak_open+0x4c/0x80
> >
> > problem is here:
> > static int kmemleak_open(struct inode *inode, struct file *file)
> 
> It's been fixed in my kmemleak branch which I'll push to Linus:
> 
Ok. Nice to hear.

> http://www.linux-arm.org/git?p=linux-2.6.git;a=shortlog;h=kmemleak
> 
> -- 
> Catalin
> 

	Sergey
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