[Bug 1886234] Re: libvirtd Tainted: kobject_add_internal failed for emu10k1-synth-0-1 with -EEXIST, don't try to register things with the same name in the same directory.

Interesting. Please attach dmesg. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1886234 Title: libvirtd Tainted: kobject_add_internal failed for emu10k1-synth-0-1 with -EEXIST, don't try to

[Bug 1886234] Re: libvirtd Tainted: kobject_add_internal failed for emu10k1-synth-0-1 with -EEXIST, don't try to register things with the same name in the same directory.

I tried putting that parameter in grub after quiet splash, but I still get the exact same error. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1886234 Title: libvirtd Tainted: kobject_add_internal

[Bug 1886234] Re: libvirtd Tainted: kobject_add_internal failed for emu10k1-synth-0-1 with -EEXIST, don't try to register things with the same name in the same directory.

Add kernel parameter "pci-stub.ids=1102:0008". -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1886234 Title: libvirtd Tainted: kobject_add_internal failed for emu10k1-synth-0-1 with -EEXIST, don't

[Bug 1886234] Re: libvirtd Tainted: kobject_add_internal failed for emu10k1-synth-0-1 with -EEXIST, don't try to register things with the same name in the same directory.

Hi Kai, I do not know how to answer that. What would be the procedure to test that? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1886234 Title: libvirtd Tainted: kobject_add_internal failed for

[Bug 1886234] Re: libvirtd Tainted: kobject_add_internal failed for emu10k1-synth-0-1 with -EEXIST, don't try to register things with the same name in the same directory.

s/psi-stub/pci-stub/ -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1886234 Title: libvirtd Tainted: kobject_add_internal failed for emu10k1-synth-0-1 with -EEXIST, don't try to register things

[Bug 1886234] Re: libvirtd Tainted: kobject_add_internal failed for emu10k1-synth-0-1 with -EEXIST, don't try to register things with the same name in the same directory.

Does the issue happen if psi-stub is used to claim the device before passing it to VM? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1886234 Title: libvirtd Tainted: kobject_add_internal failed for

[Bug 1886234] Re: libvirtd Tainted: kobject_add_internal failed for emu10k1-synth-0-1 with -EEXIST, don't try to register things with the same name in the same directory.

Tested with 5.8.0-050800-generic downloaded from kernel ppa. Got exactly the same error as above, except this time the whole system froze and became unusable, so I had to kill the power to the PC. Additionally I got a whole bunch of new errors in dmesg like [ 31.072963] SQUASHFS error: Unable

[Bug 1886234] Re: libvirtd Tainted: kobject_add_internal failed for emu10k1-synth-0-1 with -EEXIST, don't try to register things with the same name in the same directory.

Please test latest mainline kernel: https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.8-rc5/ ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu.

[Bug 1886234] Re: libvirtd Tainted: kobject_add_internal failed for emu10k1-synth-0-1 with -EEXIST, don't try to register things with the same name in the same directory.

apport information ** Tags added: apport-collected ** Description changed: After passing through the PCIe card EMU 1212m to a VM (kvm/qemu) and turning the VM off, I see this in dmesg: [ 4675.188761] snd_emu10k1 :05:04.0: non-passthrough IOMMU detected, widening DMA allocations

[Bug 1886234] Re: libvirtd Tainted: kobject_add_internal failed for emu10k1-synth-0-1 with -EEXIST, don't try to register things with the same name in the same directory.

Thank you for taking the time to report this bug and helping to make Ubuntu better. Am I right in understanding that this is a host kernel oops? My understanding of PCIe passthrough is that if you're passing through your sound card to a VM then the host kernel's sound driver should never crash,