linux-kernel - Re: [2.6.24 REGRESSION] BUG: Soft lockup

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Date:	Tue, 5 Feb 2008 22:48:29 +0100
From:	"Oliver Pinter" <oliver.pntr@...il.com>
To:	unlisted-recipients:; (no To-header on input)
Cc:	"Andrew Morton" <akpm@...ux-foundation.org>,
	"Oliver Pinter (Pintér Olivér)\"" 
	<oliver.pntr@...il.com>,
	"Linux Kernel" <linux-kernel@...r.kernel.org>, linux-mm@...ck.org,
	linux-fsdevel@...r.kernel.org, "James Morris" <jmorris@...ei.org>
Subject: Re: [2.6.24 REGRESSION] BUG: Soft lockup - with VFS

On 2/5/08, Oliver Pinter <oliver.pntr@...il.com> wrote:
> http://students.zipernowsky.hu/~oliverp/kernel/regression_2624/
>
> uploaded:
> kernel image
> .config
> new pictures
> lspci
> lsusb
>
> -----
>
> when read for /dev/uba then crashed the kernel, the read is egal, thet
> dd or mount is ...
>
> On 2/5/08, Oliver Pinter <oliver.pntr@...il.com> wrote:
> > yes, but auch too with latest git ... my top is on:
> > 9ef9dc69d4167276c04590d67ee55de8380bc1ad
> >
> > then i complie the new kernel
> >
> > On 2/5/08, Andrew Morton <akpm@...ux-foundation.org> wrote:
> > > On Tue, 05 Feb 2008 08:46:56 -0500 Stephen Smalley <sds@...ho.nsa.gov>
> > > wrote:
> > >
> > > >
> > > > On Mon, 2008-02-04 at 21:39 -0800, Andrew Morton wrote:
> > > > > On Mon, 28 Jan 2008 09:31:43 +0100 "Oliver Pinter (Pintér Olivér)"
> > > <oliver.pntr@...il.com> wrote:
> > > > >
> > > > > > hi all!
> > > > > >
> > > > > > in the 2.6.24 become i some soft lockups with usb-phone, when i
> > pluged
> > > > > > in the mobile, then the vfs-layer crashed. am afternoon can i the
> > > > > > .config send, and i bisected the kernel, when i have time.
> > > > > >
> > > > > > pictures from crash:
> > > > > > http://students.zipernowsky.hu/~oliverp/kernel/regression_2624/
> > > > >
> > > > > It looks like selinux's file_has_perm() is doing spin_lock() on an
> > > > > uninitialised (or already locked) spinlock.
> > > >
> > > > The trace looks bogus to me - I don't see how file_has_perm() could
> > have
> > > > been called there, and file_has_perm() doesn't directly take any spin
> > > > locks.
> > > >
> > >
> > > Oliver, could you please set CONFIG_FRAME_POINTER=y (which might get a
> > > better trace), and perhaps try Linus's latest tree from
> > > ftp://ftp.kernel.org/pub/linux/kernel/v2.6/snapshots/ (which is a bit
> > more
> > > careful about telling us about possibly-bogus backtrace entries)?
> > >
> > > Thanks.
> > >
> >
> >
> > --
> > Thanks,
> > Oliver
> >
>
>
> --
> Thanks,
> Oliver
>


-- 
Thanks,
Oliver
--
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