On 18-04-05 19:22:58, Sasha Levin wrote: > On Thu, Apr 05, 2018 at 09:49:40AM -0400, Pavel Tatashin wrote: > >> Hi Sasha, > >> > >> I have registered on Azure's portal, and created a VM with 4 CPUs and 16G > >> of RAM. However, I still was not able to reproduce the boot bug you found. > > > >I have also tried to reproduce this issue on Windows 10 + Hyper-V, still > >unsuccessful. > > I'm not sure why you can't reproduce it. I built a 4.16 kernel + your 6 > patches on top, and booting on a D64s_v3 instance gives me this: Hi Sasha, Thank you for running it again, the new trace is cleaner, as we do not get nested panics within dump_page. Perhaps a NUMA is required to reproduce this issue. I have tried, unsuccessfully, on D4S_V3. This is the largest VM allowed with free trial, as 4 CPU is the limit. D64S_V3 is with 64 CPUs and over $2K a month! :) Let me study your trace, perhaps I will able to figure out the issue without reproducing it. Thank you, Pasha
