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From:   bugzilla-daemon@bugzilla.kernel.org
To:     kvm@vger.kernel.org
Subject: [Bug 203321] New: Kernel Panic when i restart host
Date:   Mon, 15 Apr 2019 08:28:59 +0000
X-Bugzilla-Reason: None
X-Bugzilla-Type: new
X-Bugzilla-Watch-Reason: AssignedTo virtualization_kvm@kernel-bugs.osdl.org
X-Bugzilla-Product: Virtualization
X-Bugzilla-Component: kvm
X-Bugzilla-Version: unspecified
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X-Bugzilla-Severity: normal
X-Bugzilla-Who: berillions@gmail.com
X-Bugzilla-Status: NEW
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X-Bugzilla-Priority: P1
X-Bugzilla-Assigned-To: virtualization_kvm@kernel-bugs.osdl.org
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https://bugzilla.kernel.org/show_bug.cgi?id=203321

            Bug ID: 203321
           Summary: Kernel Panic when i restart host
           Product: Virtualization
           Version: unspecified
    Kernel Version: 4.19.x - 5.0.7
          Hardware: x86-64
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: kvm
          Assignee: virtualization_kvm@kernel-bugs.osdl.org
          Reporter: berillions@gmail.com
        Regression: No

Hello,

I have a problem with my Linux. When i use Qemu/KVM with libvirt, the GPU used
by the Guest is automatically bind to VFIO when i launch the VM and unbind when
the VM is closed.

The issue is that I have a kernel panic each time i reboot/halt the host after
to use the VM. The only solution that i found is to set "amdgpu.dc=0" in the
GRUB command line. But with this solution, FreeSync and HDMI sound is disabled.

I would like to know if there is an other solution to avoid this kernel panic
and this workaround ?

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