linux-kernel - RE: [PATCH] cciss: memory leak in cciss_init

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Date:	Mon, 24 Aug 2009 16:03:59 +0000
From:	"Miller, Mike (OS Dev)" <Mike.Miller@...com>
To:	Jens Axboe <jens.axboe@...cle.com>,
	Eric Dumazet <eric.dumazet@...il.com>
CC:	Andrew Morton <akpm@...ux-foundation.org>,
	linux kernel <linux-kernel@...r.kernel.org>,
	"stable@...nel.org" <stable@...nel.org>,
	FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>
Subject: RE: [PATCH] cciss: memory leak in cciss_init_one()

 

> -----Original Message-----
> From: Jens Axboe [mailto:jens.axboe@...cle.com] 
> Sent: Monday, August 24, 2009 3:01 AM
> To: Eric Dumazet
> Cc: Andrew Morton; Miller, Mike (OS Dev); linux kernel; 
> stable@...nel.org; FUJITA Tomonori
> Subject: Re: [PATCH] cciss: memory leak in cciss_init_one()
> 
> On Sun, Aug 23 2009, Eric Dumazet wrote:
> > Andrew, I originally sent this 18 days ago and got no reply 
> yet, maybe 
> > could you get the baby ?
> 
> I'll add it for 2.6.32.
> 

I guess I'm missing something. Where is the leak?

-- mikem

> > 
> > Thanks
> > 
> > [PATCH] cciss: memory leak in cciss_init_one()
> > 
> > commit 22bece00dc1f28dd3374c55e464c9f02eb642876
> > (cciss: fix regression firmware not displayed in procfs) 
> added a small 
> > memory leak in cciss_init_one()
> > 
> > Signed-off-by: Eric Dumazet <eric.dumazet@...il.com>
> > ---
> > diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c index 
> > a52cc7f..0589dfb 100644
> > --- a/drivers/block/cciss.c
> > +++ b/drivers/block/cciss.c
> > @@ -3889,7 +3889,7 @@ static int __devinit 
> cciss_init_one(struct pci_dev *pdev,
> >  	int j = 0;
> >  	int rc;
> >  	int dac, return_code;
> > -	InquiryData_struct *inq_buff = NULL;
> > +	InquiryData_struct *inq_buff;
> >  
> >  	if (reset_devices) {
> >  		/* Reset the controller with a PCI power-cycle 
> */ @@ -4029,6 
> > +4029,7 @@ static int __devinit cciss_init_one(struct pci_dev *pdev,
> >  		printk(KERN_WARNING "cciss: unable to determine 
> firmware"
> >  			" version of controller\n");
> >  	}
> > +	kfree(inq_buff);
> >  
> >  	cciss_procinit(i);
> >  
> > @@ -4045,7 +4046,6 @@ static int __devinit 
> cciss_init_one(struct pci_dev *pdev,
> >  	return 1;
> >  
> >  clean4:
> > -	kfree(inq_buff);
> >  	kfree(hba[i]->cmd_pool_bits);
> >  	if (hba[i]->cmd_pool)
> >  		pci_free_consistent(hba[i]->pdev,
> > 
> 
> --
> Jens Axboe
> 
> --
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