On Wed, 9 Jun 2021 09:12:40 -0700 Sean Christopherson <seanjc@xxxxxxxxxx> wrote: > > I can observe tons of other kvm tracepoints warning like this after > > commit 9a6944fee68e25 (tracing: Add a verifier to check string > > pointers for trace events), just echo 1 > > > /sys/kernel/tracing/events/kvm/enable and boot a linux guest. > > Can you provide your .config? With all of events/kvm and events/kvmmmu enabled > I don't get any warnings running a Linux guest, a nested Linux guest, and > kvm-unit-tests. > > Do you see the behavior with other tracepoints? E.g. enabling all events on my > systems yields warnings for a USB module, but everything else is clean. Right, I tested this with running KVM guests when it was added. I was actually surprised with Sean's report saying it was a kvm trace event, until I noticed that the problem event is only triggered on error paths. -- Steve
