Re: Hung task in 4.9 using kvm 5.2

Hung task in 4.9 using kvm 5.2 · Christoph Mathys <hidden> · 2021-06-07
Re: Hung task in 4.9 using kvm 5.2 · Ahmed S. Darwish <hidden> · 2021-06-08
Re: Hung task in 4.9 using kvm 5.2 · Luis Goncalves <hidden> · 2021-06-08
Re: Hung task in 4.9 using kvm 5.2 · Christoph Mathys <hidden> · 2021-06-09
Re: Hung task in 4.9 using kvm 5.2 · Christoph Mathys <hidden> · 2021-06-10
Re: Hung task in 4.9 using kvm 5.2 · Christoph Mathys <hidden> · 2021-06-15

From: Christoph Mathys <hidden>
Date: 2021-06-15 13:49:27

I'm unable to reproduce "BUG: unable to handle kernel paging request" 
when I use 4.9.178-rt131, so I'm inclined to think that it got 
introduced somewhere along the way to 4.9.271-rt182.

The problem with "hung task" is also gone when I don't force qemu 5.2 to 
use cache.direct=true and aio=native. Qemu 2.1 from Debian Jessie does 
not trigger this problem on the same system.

Christoph

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