How to get object virtual address from a kernel core dump

From: eng.myz@gmail.com (Mohammad Y. Zachariah)
To: kernelnewbies@lists.kernelnewbies.org
Subject: How to get object virtual address from a kernel core dump
Date: Fri, 18 Mar 2016 11:58:49 +0200	[thread overview]
Message-ID: <CA+9drc69Rwbyi31ixFdmTqGu9yptpPS3qvD7BnDaKHNK8W11vA@mail.gmail.com> (raw)

Hello everyone,

I'm taking the way of analysing kernel core dumps as a learning approach
using 'crash tool'. One of the interesting crash commands is 'struct' which
can print kernel struct definition and/or the actual contents of the
structure.

According to struct help page, I need the virtual address of the struct in
order to view/print its contents, for example:

    crash> mm_struct.pgd ffff810022e7d080 -px
      pgd_t *pgd = 0xffff81000e3ac000
      -> {
           pgd = 0x2c0a6067
         }

My question is how to find the mm_struct address "ffff810022e7d080" in the
above example in the first place??

Thank you for your help in advance.
Zach
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