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From: Pavel Machek <pavel@suse.cz>
To: pavel@ucw.cz
Cc: Ted Kremenek <kremenek@cs.stanford.edu>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	mc@cs.stanford.edu, Alan Cox <alan@lxorguk.ukuu.org.uk>
Subject: Re: [CHECKER] 12 potential leaks in kernel 2.5.69
Date: Mon, 26 May 2003 11:42:41 +0200	[thread overview]
Message-ID: <20030526094241.GD642@zaurus.ucw.cz> (raw)
In-Reply-To: <20030522100358.GB6708@wohnheim.fh-wedel.de>

Hi!

linux-2.5.69/drivers/message/i2o/i2o_core.c (lines 1668-1722)
> > [BUG/LEAK: may be false positive; status appears to be leaked elsewhere in
> > the function on purpose]
> > 
> >     m=i2o_wait_message(c, "AdapterReset");
> >     if(m==0xFFFFFFFF)
> >         return -ETIMEDOUT;
> >     msg=(u32 *)(c->mem_offset+m);
> >     
> > Start --->
> >     status = pci_alloc_consistent(c->pdev, 4, &status_phys);
> > 
> >     ... DELETED 48 lines ...
> > 
> >         { 
> >             if((jiffies-time) >= 30*HZ)
> >             {
> >                 printk(KERN_ERR "%s: Timeout waiting for IOP reset.\n",
> >                         c->name);
> > Error --->
> >                 return -ETIMEDOUT;
> >             } 
> >             schedule();
> >             barrier();
> 
> Iirc, the above will leak 4 bytes (plus overhead) once per kernel
> boot and controller. This only happens for broken hardware and the
> alternative is memory corruption, depending on how broken the hardware
> is. Wontfix.

Perhaps comment should be added?

-- 
				Pavel
Written on sharp zaurus, because my Velo1 broke. If you have Velo you don't need...


  parent reply	other threads:[~2003-05-28 15:58 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-05-22  6:04 [CHECKER] 12 potential leaks in kernel 2.5.69 Ted Kremenek
2003-05-22  7:46 ` David S. Miller
2003-05-22 10:03 ` Jörn Engel
2003-05-22  9:50   ` Alan Cox
2003-05-26  9:42   ` Pavel Machek [this message]
  -- strict thread matches above, loose matches on Subject: below --
2003-05-22 17:34 Jean Tourrilhes
2003-05-23  8:11 ` Ted Kremenek

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