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Re: kern/54761: nvme corruption on GENERIC without DIAGNOSTIC

On Tue, 17 Dec 2019 at 07:09, Masanobu SAITOH <> wrote:
> >         Obvkously a workaround is to include DIAGNOSTIC
> sys/dev/ic/nvme.c uses bus_space_barrier().
> x86's bus_space_barrier() change will be pulled up by the
> following ticket:
>  Could you test with this change?

I've switched from using cgd, and I've not seen corruption, but I have
seen lockups (still trying to see if I can get into ddb) with the
previous (problem) kernel .

Testing with Tue Dec 17 16:14:25 UTC 2019 from releng, which includes
bus_space.c,v, and I saw the same type of lockup (stupidly
did not have ddb.fromconsole=1)

This is with some xterms, firefox, and network over iwm0. I'll leave
it running overnight to see if it locks up again and if so if I can
get into ddb...



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