Messages in this thread | | | From | Michael Ellerman <> | Subject | Re: Memory corruption in powerpc guests with virtio_balloon (was Re: [PATCH v3] virtio_balloon: fix deadlock on OOM) | Date | Sun, 03 Dec 2017 21:04:40 +1100 |
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"Michael S. Tsirkin" <mst@redhat.com> writes: > On Fri, Dec 01, 2017 at 11:31:08PM +1100, Michael Ellerman wrote: >> "Michael S. Tsirkin" <mst@redhat.com> writes: >> >> > fill_balloon doing memory allocations under balloon_lock >> > can cause a deadlock when leak_balloon is called from >> > virtballoon_oom_notify and tries to take same lock. ... >> >> >> Somehow this commit seems to be killing powerpc guests. ... > > Thanks for the report! > A fix was just posted: > virtio_balloon: fix increment of vb->num_pfns in fill_balloon() > > Would appreciate testing.
Yep that fixes it. Thanks.
Tested-by: Michael Ellerman <mpe@ellerman.id.au>
cheers
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