[02:36] <TimurTabi> ChmEarl: if you're getting UBSAN errors, something is wrong.  I tried 6.7-rc1 and I only saw one error, and that was in a driver that's normally disabled.
[02:36] <TimurTabi> You should post your dmesg somewhere.
[16:02] <ChmEarl> https://pb.dynavirt.com/view/raw/6b04ac36
[16:03] <ChmEarl> UBSAN errors booting Noble ub-24.04 xen VM (pvh)
[16:03] <ChmEarl> its messy
[16:03] <ChmEarl> plot summary, the errors come from xen drivers
[16:04] <ChmEarl> booting pv does the same thing
[16:04] <ChmEarl> the CPU is ivy-bridge
[16:05] <ChmEarl> TimurTabi, ^ thanks for looking
[16:24] <ChmEarl> https://bugzilla.kernel.org/show_bug.cgi?id=217693
[16:24] -ubottu:#ubuntu-kernel- bugzilla.kernel.org bug 217693 in Drivers "UBSAN: index 1 is out of range for type 'xen_netif_rx_sring_entry [1]'" [Normal, New]
[16:24] <ChmEarl> xen team linked me this ^
[16:35] <ChmEarl>  3 weeks ago kernel-6.4 was tested in ubuntu xen/Pvh domU and no ubsan errors appeared