Re: [Libusb-devel] Kernel bug message and missing data on libusb_interrupt_transfer

[Oncaphillis]

On 04/06/2011 12:37 PM, Oncaphillis wrote:
> On 04/05/2011 04:42 PM, Alan Stern wrote:
> > On Tue, 5 Apr 2011, Oncaphillis wrote:
> >
> > > On 04/05/2011 04:13 PM, Alan Stern wrote:
> > > > On Tue, 5 Apr 2011, Oncaphillis wrote:
> > > >
> > > > > Now I get
> > > > >
> > > > > <snip>
> > > > > ------------[ cut here ]------------
> > > > > kernel BUG at mm/slub.c:2808!
> > > > > invalid opcode: 0000 [#2] SMP
> > > > Can you duplicate this using either a 2.6.37 or 2.6.38 kernel?
> > > >
> > > > Alan Stern
> > > The highest kernel version we've tried (as far as i remember) was the
> > > 2.6.36. Have there been issues which might have been solved betwen 36
> > > and 3(7|8) ?
> > I don't know.  But the core kernel developers always want to hear about
> > problems reported against the most recent version possible.  If you
> > could test 2.6.39-rc1 (or -rc2, which should be released in a day or
> > so), that would be even better.
> Ok -- kernel 2.6.38.2 together with libusb-1.0.8 seems to behave well.
> This was only a minimal overnight test. Not the full functionality we
> are trying to implement. But it looks promising.
>
>    Thank you
>
>    O.
Just a short update,

 It doesn't seem to have anything to do with the libsub-1.0.x) version but
with the --(enable|disable)-timerfd option of libusb configure. If 
libusb was
configured with --disable-timerfd, which was the case for our 1.0.6 libusb
I get the kernel bug message in in slub.c module and eventually a
kernel freeze. This holds true for libusb-1.0.8 and kernel 2.6.38.2

O.

> > > I'll give it a try.
> > Thanks.
> >
> > Alan Stern
> >
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