Control: retitle -1 qemu-system-x86: fails to start: kvm_buf_set_msrs:  Assertion 
`ret == cpu->kvm_msr_buf->nmsrs' failed.

28.05.2022 01:28, Bob Weber wrote:
I have this same problem when I upgraded a testing system on May 24.  I also 
installed:

linux-image-5.17.0-2-amd64 from unstable

This is the error from a (all) VM:

vm: error: failed to set MSR 0xc0000104 to 0x100000000

kvm: ../../target/i386/kvm/kvm.c:2996: kvm_buf_set_msrs: Assertion `ret == 
cpu->kvm_msr_buf->nmsrs' failed.

When I downgraded the kernel to:

  linux-image-5.15.0-3-amd64/now 5.15.15-2 amd64   (my previous kernel)

Does it work with later kernels?

What CPU do you have?

/mjt

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