windbg - how to get one stack up?

how to get one stack up in WinDbg?

I loaded dump file from crash - "memory.hdmp" into WinDbg.
And I see the last stack when crashed was
" my_mod!xmlParseURIAuthority+0x391"

dd_mod_main!xmlParseURIAuthority+391 [c:\fullbuild\windows\isapi\libxml\libxml\uri.c @ 1569]
000007fe`f09a7681 668b040a        mov     ax,word ptr [rdx+rcx]

EXCEPTION_RECORD:  ffffffffffffffff -- (.exr 0xffffffffffffffff)
ExceptionAddress: 000007fef09a7681 (my_mod!xmlParseURIAuthority+0x0000000000000391)
   ExceptionCode: c0000005 (Access violation)
  ExceptionFlags: 00000000
NumberParameters: 2
   Parameter[0]: 0000000000000000
   Parameter[1]: 0000000000005566
Attempt to read from address 0000000000005566

PROCESS_NAME:  w3wp.exe

The stack I see:
STACK_TEXT:  
00000000`0196f098 000007fe`f0951277 : 00000000`02eb1dc0 00000000`0000000a 00000000`0000005e 00000000`0196f1d0 : dd_mod_main!xmlParseURIAuthority+0x391
00000000`0196f0a0 00000000`02eb1dc0 : 00000000`0000000a 00000000`0000005e 00000000`0196f1d0 00000000`033aea80 : my_mod!ILT+625(?ApplyRulesCMyModuleAEAA?AW4REQUEST_NOTIFICATION_STATUSPEAVIHttpContextAEAVCFilterHtRespHeadZ)+0x1
00000000`0196f0a8 00000000`0000000a : 00000000`0000005e 00000000`0196f1d0 00000
...

SO THE QUESTION WITH WinDbg COMMAND SHOULD i RUN TO GET UP ON THE PREVIOUS STACK BEFORE CRASH - "my_mod!ILT+625(?ApplyRulesCMyModuleAEAA?AW4RE..."?
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longjumpsAsked:
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arnoldCommented:
!analyze -v
You need the iis Debugger rather than a general debugger
http://www.orcsweb.com/blog/jeff/using-iis-debug-diagnostics-to-troubleshoot-worker-process-cpu-usage-in-ii6/

Some useful info on using windbg
http://windbg.info/doc/1-common-cmds.html
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longjumpsAuthor Commented:
Command "!analyze -v" shows the crash stack.
But what if I want get up one stack/method up? Which command should I use?


Another thing, regarding Debug Diagnostic Tool, in x64 version that I used, it doesn't stop when crash happens. So it is useless here.
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arnoldCommented:
This is an iis worker process, you need to use the iis related debugger offered that may help in diagnosing your issue.
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longjumpsAuthor Commented:
Which debugger should I use?

I tried Microsoft Debug Diagnostic Tool x64, but it doesn't catch me dumps and stop on crash despite I defined relevant rule.

Please advice.
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arnoldCommented:
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longjumpsAuthor Commented:
not exact
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