Re: Linux crash when using FTDI FT232R USB to serial converter on AMD boards.

Oliver Neukum
2019-05-15T14:07:41Z

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On Mi, 2019-05-15 at 13:21 +0200, StarostaCZ@gmail.com wrote:
> Dne 15.5.2019 v 11:46 Oliver Neukum napsal(a):
>
>
> > Most helpful. First, try to replicate this with the iommu
> > disabled.
> >
>
> I am trying this with "iommu disabled" in bios, but system crash
> too: https://paste.ee/p/wUgHl
>
>
>
>
> > Secondly, make a proper bugreport mentioning the affected
> > kernel version (5.1)
> >
>
> How can I do this?

1. Determine whether the bug depends on the use of an IOMMU
2.Send a new report to the corresponding mailing list

>
>
>
> > Thirdly, if possible replicate this with the vanilla kernel
> > from kernel.org
> >
>
> I am afraid, that is not possible. My skills is not too good - is
> there some procedure to how do this?
>
> I made test with mainline kernel 5.1.2 from
> https://kernel.ubuntu.com/~kernel-ppa/mainline/
>
> but computer crash on boot (kernel panic: unable to mount root
> fs...).

Your initrd has most likely not included a driver for the filesystem on
your root device.

Regards
Oliver

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