Almost all lines in GC dump are UNKNOWN

[MaximTkachenko]

I got a dump of a dotnet application from production using dotnet-monitor. When I open dump.gcdump file in PerfView and check Heap Stacks almost all lines looks like this:

dotnet 6, PerfView 2.0.77

How to get proper names of classes?

[brianrob]

@noahfalk is there a known issue around this? I sort of remember hearing something about this.

[noahfalk]

If there is a known issue it isn't one I recall, but perhaps @davmason remembers better?

[MaximTkachenko]

I tried to analyze the dump with cli and result is the same

So I suppose the problem is in the dump itself.

[MaximTkachenko]

Ok, it looks like I found the root cause dotnet/diagnostics#1318 (comment)

[brianrob]

@MaximTkachenko, were you just missing some of the required memory pages?