On a Wednesday in 2025, Peter Krempa wrote:
The original NEWS entry for the vTPM transient VM crash was rather vague and non-actionable.
Apologies for not making it more descriptive. I'm not convinced the NEWS should contain step-by-step workarounds for bugs that are already fixed - that already happened in the linked issue.
As the bug is still actively experienced by users [1] of distros that didn't yet ship an update to v11.0.0 and is hit by relatively common usage improve the entry to mention situations when it happens a bit more close and provide workarounds for users who are not able to update. [1]: https://gitlab.com/libvirt/libvirt/-/issues/746 Signed-off-by: Peter Krempa <pkrempa@xxxxxxxxxx> --- NEWS.rst | 29 ++++++++++++++++++++++++++--- 1 file changed, 26 insertions(+), 3 deletions(-) diff --git a/NEWS.rst b/NEWS.rst index 7dc6a3fa37..117287044a 100644 --- a/NEWS.rst +++ b/NEWS.rst @@ -97,10 +97,33 @@ v11.0.0 (2025-01-15) * **Bug fixes** - * qemu: tpm: do not update profile name for transient domains + * qemu: tpm: Fix crash on startup of transient domains with vTPM
The commit summary is already pushed and immutable. Jano
- Fix a possible crash when starting a transient domain which was - introduced in the previous release. + A bug was introduced in `v10.10.0 (2024-12-02)`_ when a transient VM with + a vTPM device is started either via ``virsh create domain.xml`` or when + creating VMs via ``virt-manager`` which uses transient definition for the + initial installation the libvirt daemon (``virtqemud`` or ``libvirtd``) can + crash. + + Note that vTPM is auto-added in many cases by ``virt-install`` based on your + guest OS that is about to be installed. + + The bug is fixed in this release. Following workarounds are possible if + upgrade is currently not available: + + - make the VM persistent instead of starting it as transient:: + + virsh define domain.xml + virsh start.xml + + - disable vTPM if practical in your deployment, either by dropping ``<tpm`` + element or:: + + virt-install --tpm none ... + + To obtain the XML ``virt-install`` would use for the above steps you can use:: + + virt-install --print-xml ... * qemu: Fix snapshot to not delete disk image with internal snapshot -- 2.48.1
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