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Re: Instability issues with NetBSD-9, xen-4.11 and the xbdb backend driver
On Wed, Nov 13, 2019 at 01:59:44PM -0800, Brian Buhrow wrote:
> hello. I think I'm making progress. The problem seems to be an error
> with the shared memory mapping on the back end with dom0. With backend
> debugging turned on, I see the errors below.
>
> It looks like xen_shm_map() is supposed to return ENOMEM if it can't
> allocate a segment of memory in the moment, but instead, it's returning -1,
> which triggers the messages I'm seeing. At this point, I'm not sure where
> the -1 is coming from. If I'm reading the xen_shm_map function correctly,
> if it gets an error it doesn't map to ENOMEM, it's supposed to panic. yet,
> it's not panicing.
> Since I'm using modules to load zfs, it's not a trivial test to switch
> kernels to -current.
zfs is hightly suspect then. Maybe it's corrupting memory ...
--
Manuel Bouyer <bouyer%antioche.eu.org@localhost>
NetBSD: 26 ans d'experience feront toujours la difference
--
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