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SubjectRe: crash by cdc_acm driver in kernels 4.8-rc1/5
On Tue, Nov 15, 2016 at 12:26:00PM +0100, poma wrote:
> > In the process of searching, many options may have changed. The crash/OOPS
> > has now mitigated into just a WARNING with a call trace.
> > (Or it could be a totally different bug?)
> >
> > Tests on other machines with (slightly) different configs all seem to
> > confirm that the problems are gone when CONFIG_SMP is set.
> >
>
> Try retest with mainline 4.9-rc5,
> CONFIG_SMP was not crucial[1].

I did also test 4.9-rc5 and it behaves like all the rest (since 4.8).
My problem is gone when CONFIG_SMP is set.

That doesn't mean that there are no extra bugs here, dependant on the
presence or absence of other options.

> [1] https://www.spinics.net/lists/linux-usb/msg148852.html

I experience a sliding scale.
With debug it crashes immediately. It may crash later on (even at shutdown
time). It's not even an oops but a warning. In the end it happens to just
work.


Regards, Wim.

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