Re: 2.6.6-mm2(-mm1,-bk1): SMP bug on dual AMD64

[Greg KH]

On Fri, May 14, 2004 at 04:05:24PM -0700, Andrew Morton wrote:
> "R. J. Wysocki" <rjwysocki@xxxxxxx> wrote:
> >
> > I've just compiled the 2.6.6-mm2 kernel (with gcc-3.4) and tried to run it.  
> > Well, it generally works, but there seems to be an SMP bug that may be 
> > triggered with the help of a USB storage device (please see the attached 
> > log).  The device works fine in spite of it, though.
> > 
> > This bug seems to be present in the 2.6.6-mm1 and 2.6.6-bk1, but it is not 
> > present in the 2.6.6, apparently.
> > 
> > My system is a dual Opteron and I use an add-on USB 2.0 card based on the NEC 
> > chipset (the .config is attached).
> 
> The WARN_ON() backtrace is unrelated to USB - it is due to SCSI calling
> vmalloc/vfree with interrupts disabled.  People are working on that.
> 
> As for this:
> 
> May 14 23:57:09 chimera kernel: usb usb2: string descriptor 0 read error: -108
> May 14 23:57:09 chimera last message repeated 2 times
> 
> It has been reported before and I assume people are working it, but it
> would be nice to have confirmation of that...

It should be fixed in the patches I just sent to Linus.

thanks,

greg k-h
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