** Description changed: + [Impact] + + * TPM isn't always easy, but at least some rough edges can be improved. + In this case some qemu commandlines will lead to odd error reporting + which is a) a false-positive and b) blocking the use case. + + * This was fixed upstream and hereby the fix is backported + + [Test Case] + + Easiest - using passthrough: + You need a system that has a TPM: + + $ sudo qemu-system-x86_64 -nodefaults -S -display none -monitor stdio + -tpmdev passthrough,id=tpm0,path=/dev/tpm0 -device tpm-tis,tpmdev=tpm0 + + If you enter the qemu monitor you are good, if qemu doesn't start + complaining about its command line arguments then the error is still + present. + + One can (if you want to go the extra mile) also set up a swtpm based + emulator and try that. But swtpm isn't in the archive yet and trousers + (a dependency) has issues on install. Commands would then be like: + + $ swtpm socket --tpmstate dir=/tmp/mytpm1 --ctrl type=unixio,path=/tmp/mytpm1/swtpm-sock --log level=20 + $ qemu-system-x86_64 -nodefaults -S -display none -monitor stdio -chardev socket,id=chrtpm,path=/tmp/mytpm1/swtpm-sock -tpmdev emulator,id=tpm0,chardev=chrtpm -device tpm-tis,tpmdev=tpm0 + + + + [Where problems could occur] + + * The changes are local only to the tpm code in qemu. So we can assume + that other areas will unlikely be affected, but at the same time errors + would occur in exactly that place. So for the time after release our + bug triage can be extra careful if anyone mentioned qemu+tpm to spot + regressions. + + [Other Info] + + * n/a + + ---- + + Hello. The TPM device in virt-manager never really worked in Ubuntu (I tried upgrades from 16.04 to 20.04 and each of them exhibited a different kind of issues). The Ubuntu 20.04 versions of libvirt/qemu are throwing the following error: qemu-system-x86_64: -device tpm-tis,tpmdev=tpm-tpm0,id=tpm0: Property 'tpm-tis.tpmdev' can't find value 'tpm-tpm0' Our employer changed a security policy, requiring encrypted drives and that endangers usage of Linux as the host system without making the tpm passthrough working. Versions: libvirt0:amd64 6.0.0-0ubuntu8.5 qemu-kvm 1:4.2-3ubuntu6.8 virt-manager 1:2.2.1-3ubuntu2.1
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1903864 Title: qemu-system-x86_64: -device tpm-tis,tpmdev=tpm-tpm0,id=tpm0: Property 'tpm-tis.tpmdev' can't find value 'tpm-tpm0' To manage notifications about this bug go to: https://bugs.launchpad.net/launchpad/+bug/1903864/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
