On Thu, 18 Mar 2021 at 12:44, Mark Woolfson <mrw at mwcltd.co.uk> wrote: > Hello, > > > > I wonder if you could help. > > > > I have a requirement to load CentOS 7.3 on to a server. I have the > distribution on a bootable USB key. > > > What kind of server? This is a hardware issue and is going to need to know what kind of CPU and what the firmware on the system is. My uninformed guess is that the kernel is finding a large number of CPUs (either virtual or real) and it is probably only fixed by the kernel/software in 7.4. [A test would be to see if 7.2 also has this issue and if not then walk through the kernels until it does.. then look at the change logs for when it starts working again.] Or I would try installing with a smaller number of CPUs with a command line entry like maxcpus=16 (if this system has 82+?) > > CentOS boots to the first menu but when I select the option to install > almost immediately I get the error below: > > > > NMI watchdog: BUG: soft lockup - CPU#82 stuck for 23s! [system-udevd:1221] > > > > The above error is output every 23s > > > > This is a repeatable error condition. > > > > When I load CentOS 7.4 on to the server I get no problems. > > > > When I load the above CentOS 7.3 distribution on to an older server I get > no > problems. > > > > Has anyone every seen the NMI watchdog error and found a resolution. > > > > Thank you in advance, > > Mark > > > > > > -- > This email has been checked for viruses by AVG. > https://www.avg.com > _______________________________________________ > CentOS mailing list > CentOS at centos.org > https://lists.centos.org/mailman/listinfo/centos > -- Stephen J Smoogen.