On Wed, 6 Oct 2021 08:11:05 +0200 Claudio Kuenzler <c...@claudiokuenzler.com> wrote: > I've seen this too and documented my findings here: > https://www.claudiokuenzler.com/blog/1125/debian-11-bullseye-boot-freeze-kernel-panic-hp-proliant-dl380 > > (reason is the hpwdt module) > > This bug is most likely a duplicate of > https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=898336 where the same > NMI's are reported with Kernel 4.16 but with Kernel 5.10 the boot > issues/crashes seem to be even worse. > > Maintainers, please consider disabling (blacklisting) the hpwdt module by > default (same as Ubuntu). If anyone REALLY needs it, it can be manually > enabled.
My HPE ProLiant BL460c Gen9 has the same problem. And with some debug, I find the problem is due to CONFIG_INTEL_IOMMU_DEFAULT_ON=y So, as a workaround, we can use intel_iommu=off kernel option.
