linux-kernel - Re: kref refcounting breakage in mainline

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20070306210445.GB29164@kroah.com>
Date:	Tue, 6 Mar 2007 13:04:45 -0800
From:	Greg KH <greg@...ah.com>
To:	Mike Galbraith <efault@....de>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Tejun Heo <htejun@...il.com>,
	Kay Sievers <kay.sievers@...y.org>,
	linux-kernel@...r.kernel.org, Adrian Bunk <bunk@...sta.de>
Subject: Re: kref refcounting breakage in mainline

On Tue, Mar 06, 2007 at 06:43:22AM +0100, Mike Galbraith wrote:
> On Mon, 2007-03-05 at 16:25 -0800, Greg KH wrote:
> 
> > Mike, I've reverted this patch, and I don't see any references leaking.
> > And, as your patch released the reference on the driver, and the
> > module_add_driver() call would not grab a reference to the driver, only
> > the module kobject, I don't see what you were trying to fix with this
> > patch.
> > 
> > Do you have a test case that this fixes?
> 
> What it fixed for me was the hard hang reported below.
> 
> http://lkml.org/lkml/2007/2/16/96

What specific module are you trying to unload that causes the hang?  I
think it might just be a problem with that module, and not with all
others.

So, I'm going to revert your patch and work to try to find the real
cause of this problem.

thanks,

greg k-h
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/