[Crash-utility] crash and makedumpfile with 5.3 missing memory in dump

[Andi Kleen]

Hi,

[I'm not sure if that is a crash or mkdumpfile problem]

I'm trying to use crash to read a makedumpfile vmcore from 5.3, but I always end up with an error when opening the dump. 

I'm using the latest github crash 

crash 7.2.7++
...
 crash: page excluded: kernel virtual address: ffffffff82110370  type:
 "possible"
 WARNING: cannot read cpu_possible_map
 crash: page excluded: kernel virtual address: ffffffff82110360  type:
 "present"
 WARNING: cannot read cpu_present_map
 crash: page excluded: kernel virtual address: ffffffff82110368  type:
 "online"
 WARNING: cannot read cpu_online_map
 crash: page excluded: kernel virtual address: ffffffff82110358  type:
 "active"
 WARNING: cannot read cpu_active_map
 crash: page excluded: kernel virtual address: ffffffff82011544  type:
 "init_uts_ns"
 crash: page excluded: kernel virtual address: ffffffff82110360  type:
 "cpu_present_map"
 crash: page excluded: kernel virtual address: ffffffff82110360  type:
 "cpu_present_map"
 WARNING: ORC unwinder: cannot read lookup_num_blocks
 crash: seek error: kernel virtual address: ffff88822dffb000  type:
 "memory section root table"

The dump is created with the latest makedumpfile release

makedumpfile: version 1.6.6 (released on 27 Jun 2019)

It complains that it doesn't support the kernel 

Any ideas? 

-Andi