Hi,

On 6/11/22 01:02, Alexander G. M. Smith wrote:
> On 2022-06-08 15:00, Alexander G. M. Smith wrote:
>> Ian Laurie wrote on Friday, 3 June 2022 at 11:17 p.m.:
>> > Is anyone else seeing crashes and other strange events in VirtualBox
>> > 6.1.34 (from RPMFusion) with Linux guests when the Linux host is running
>> > Fedora 36 with kernel-5.17.12?
>> [...]
>> The weird thing is that it works on other CPUs, an AMD Athlon X2 and an 
>> Intel 10th generation i5-10500H.  Just my Ivy Bridge Intel i7-4820K has the 
>> problem.  I did try the kernel boot parameter mitigations=off, in case the 
>> Spectre or other workarounds were wrong for Ivy Bridge, but it still didn't 
>> work.
> 
> One more data point.  It fails on an Intel i5-750 too.  Same broken data 
> connections and failed checksums.
> 
> My go-to test is to use "dnf clean" followed by "dnf upgrade" running as root 
> in a console (thus no networking is between keyboard and computer - pipes 
> often fail).  My server snapshot fails to get through the complete dnf 
> upgrade on kernel 5.17.13, works fine if booting the host with the earlier 
> kernel 5.17.11 (using the GRUB boot menu to pick the older OS).
> 
> So, should we report this to VirtualBox?  They seem like the most appropriate 
> people.  Kernel people would be a possibility?
> 
> Found a relevant bug report:
> https://www.virtualbox.org/ticket/20976
> 
> And a forum discussion:
> https://forums.virtualbox.org/viewtopic.php?f=7&t=106071
> 
> Though they don't know that it only happens on certain CPUs (or motherboards 
> or ?).  I'll add some notes about that there.

Note the rpmfusion VirtualBox packages now include this fix:
https://build.opensuse.org/package/view_file/Virtualization/virtualbox/fixes_for_kernel_5.18.patch?expand=1

See:
https://koji.rpmfusion.org/koji/buildinfo?buildID=22655

Which is supposed to fix this.

Regards,

Hans
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