From mboxrd@z Thu Jan 1 00:00:00 1970
From: bugzilla-daemon@bugzilla.kernel.org
Subject: [Bug 196685] System becomes unresponsive after intel_iommu kernel
error
Date: Thu, 17 Aug 2017 05:13:58 +0000
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changbin.du@hotmail.com changed:
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--- Comment #5 from changbin.du@hotmail.com ---
(In reply to Jason Hicks from comment #0)
> Created attachment 257969 [details]
> Kernel error in /var/log/kern.log
>
> I using a qemu virtual machine with VGA pass through. I have two Intel NICs
> in use by my motherboard, and I am passing through one of them so I can
> network with the VM over gigabit ethernet. I have been using this without
> issues for several months, but recently my system started becoming unstable.
> Before each crash, the network connection would abruptly end, and I suspect
> that is related to this. My desktop environment locks up, and after logging
> into my user account in another terminal, it is flooded with UFW block
> messages and no commands using sudo return anything. A kernel error
> appearing to be caused by intel_iommu is left in the kernel log. After this
> has happened yesterday, I ran memtest86 and my memory is okay. I am using an
> engineering sample CPU that is a down-clocked Intel E5 2680 v4. I haven't
> had any issues with this chip except recently when using VT-d.
Checking your dmesg, there are several kernel oops from different modules. Can
you share a full dmesg start from boot, to get the original error?
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