linux-kernel - Re: 2.6.22.14 oops msg with commvault galaxy ?

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: <20071214170739.GA2576@linux.vnet.ibm.com>
Date:	Fri, 14 Dec 2007 22:37:39 +0530
From:	Dhaval Giani <dhaval@...ux.vnet.ibm.com>
To:	Greg KH <gregkh@...e.de>
Cc:	Ingo Molnar <mingo@...e.hu>, Kay Sievers <kay.sievers@...y.org>,
	vincent.fortier1@...gc.ca, Randy Dunlap <randy.dunlap@...cle.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org,
	Srivatsa Vaddagiri <vatsa@...ux.vnet.ibm.com>,
	Balbir Singh <balbir@...ibm.com>, maneesh@...ibm.com
Subject: Re: 2.6.22.14 oops msg with commvault galaxy ?

On Fri, Dec 14, 2007 at 08:26:42AM -0800, Greg KH wrote:
> On Thu, Dec 13, 2007 at 09:21:26PM +0100, Ingo Molnar wrote:
> > 
> > * Kay Sievers <kay.sievers@...y.org> wrote:
> > 
> > > > > > This one also fails to apply properly at the exact same place 
> > > > > > has Ingo's previously posted patch.  Would need to backport his 
> > > > > > one.
> > > > > 
> > > > > It depends on a completely reworked sysfs logic, I don't think it 
> > > > > makes any sense to backport that.
> > > > 
> > > > well, if it fixes a live bug in a still supported stable kernel 
> > > > release...
> > > > 
> > > > Vincent, could you try to just get rid of all actual uses of 
> > > > se->attr.owner, within fs/sysfs/*.c? Something like the patch below. 
> > > > (totally untested - might be fatally broken as well)
> > > 
> > > How can you think that this is not needed? You can not remove it with 
> > > sysfs you are patching. Hope this explains it: 
> > > http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=0ab66088c855eca68513bdd7442a426c4b374ced
> > 
> > yeah - as i said it might be fatally broken (in fact it is). Do we 
> > understand why Vincent got the crashes with vanilla 2.6.22.14 ?
> 
> No, and I can't seem to duplicate them here at all.
> 
> Does anyone have a test case for this that I can work on trying to
> duplicate?
> 

If you apply CFS without my fix, and try to constantly check cpu_shares
for a user who is logging and logging out, you should hit it. (That's
what I was doing).

-- 
regards,
Dhaval
--
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/