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[Libunwind-devel] mincore_validate fails sometimes

From: Daniel Vassdal
Subject: [Libunwind-devel] mincore_validate fails sometimes
Date: Mon, 15 Jan 2018 12:00:37 +0000

We have an issue where on Yocto Morty 2.2 mincore_validate() sometimes 
unexpectedly returns -1.
This seems to happen most often directly after the system has been booted.

The check that fails is
> if (!(mvec[i] & 1)) return -1;

The reason I suspect this is a libunwind problem is that when HAVE_MINCORE 
isn't defined, it works well.
This workaround is sufficient for us, but in case this indeed is a bug I 
figured I'd let you guys know.

Best regards,
Daniel Vassdal
Meshtech AS

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