Re: [2.6.24 REGRESSION] BUG: Soft lockup - with VFS

[Stephen Smalley]

On Mon, 2008-02-04 at 21:39 -0800, Andrew Morton wrote:
> On Mon, 28 Jan 2008 09:31:43 +0100 "Oliver Pinter (PintÃr OlivÃr)"  <oliver.pntr@xxxxxxxxx> 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.

-- 
Stephen Smalley
National Security Agency

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