On Mon, Jul 16, 2018 at 05:02:01AM -0600, Jan Beulich wrote:
> > Unfortunably there has been a crash last week:
>
> Hmm, looks to be still all the same as before (except for the line
> number). I'm afraid I'm out of ideas, at least for the moment.
OK, FYI I commited xen 4.11 packages for NetBSD, with the attached
patch. With this the hypervisor doens't panic ...
--
Manuel Bouyer <bou...@antioche.eu.org>
NetBSD: 26 ans d'experience feront toujours la difference
--
$NetBSD: patch-zz-bouyer,v 1.1 2018/07/24 13:40:11 bouyer Exp $
Dirty hack to avoid assert failure. This has been discussed on xen-devel
but no solution has been fonud so far.
The box producing http://www-soc.lip6.fr/~bouyer/NetBSD-tests/xen/
is running with this patch; the printk has fired but the
hypervisor keeps running.
--- xen/arch/x86/mm.c.orig 2018-07-19 10:32:07.000000000 +0200
+++ xen/arch/x86/mm.c 2018-07-21 20:47:47.000000000 +0200
@@ -674,7 +674,12 @@
typeof(pg->linear_pt_count) oc;
oc = arch_fetch_and_add(&pg->linear_pt_count, -1);
- ASSERT(oc > 0);
+ if (oc <= 0) {
+ gdprintk(XENLOG_WARNING,
+ "mm.c:dec_linear_entries(): oc %d would fail assert\n", oc);
+ pg->linear_pt_count = 0;
+ }
+ /* ASSERT(oc > 0); */
}
static bool inc_linear_uses(struct page_info *pg)
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