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<p class="MsoNormal"><span lang="EN-US">Hi everyone,</span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I am curious for inspecting FreeBSD VM dump by crash-utility.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I built crash from source, and changed the configure option of gdb to target FreeBSD.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">And used virsh dump --memory-only to generate freebsd.dump.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">But I got an obstacle when use this crash utility to load FreeBSD dump:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"># ./crash/crash ./kernel.debug ./freebsd.dump<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">crash 7.1.4<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Copyright (C) 2002-2015 Red Hat, Inc.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Copyright (C) 2004, 2005, 2006, 2010 IBM Corporation<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Copyright (C) 1999-2006 Hewlett-Packard Co<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Copyright (C) 2005, 2006, 2011, 2012 Fujitsu Limited<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Copyright (C) 2006, 2007 VA Linux Systems Japan K.K.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Copyright (C) 2005, 2011 NEC Corporation<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Copyright (C) 1999, 2002, 2007 Silicon Graphics, Inc.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Copyright (C) 1999, 2000, 2001, 2002 Mission Critical Linux, Inc.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">This program is free software, covered by the GNU General Public License,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">and you are welcome to change it and/or distribute copies of it under<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">certain conditions. Enter "help copying" to see the conditions.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">This program has absolutely no warranty. Enter "help warranty" for details.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">GNU gdb (GDB) 7.6<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Copyright (C) 2013 Free Software Foundation, Inc.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">This is free software: you are free to change and redistribute it.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">There is NO WARRANTY, to the extent permitted by law. Type "show copying"<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">and "show warranty" for details.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">This GDB was configured as "--host=x86_64-unknown-linux-gnu --target=x86_64-free bsd"...<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">crash: ./kernel.debug: no debugging data available<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">But this kernel.debug does have the debug sections:</span></p>
<p class="MsoNormal"><span lang="EN-US"># readelf --sections ./kernel.debug | grep -i debug</span></p>
<p class="MsoNormal"><span lang="EN-US"> [39] .debug_aranges PROGBITS 0000000000000000 010e500b</span></p>
<p class="MsoNormal"><span lang="EN-US"> [40] .debug_pubnames PROGBITS 0000000000000000 0110d7eb</span></p>
<p class="MsoNormal"><span lang="EN-US"> [41] .debug_info PROGBITS 0000000000000000 012197dd</span></p>
<p class="MsoNormal"><span lang="EN-US"> [42] .debug_abbrev PROGBITS 0000000000000000 034485ff</span></p>
<p class="MsoNormal"><span lang="EN-US"> [43] .debug_line PROGBITS 0000000000000000 03557e9f</span></p>
<p class="MsoNormal"><span lang="EN-US"> [44] .debug_frame PROGBITS 0000000000000000 0387a408</span></p>
<p class="MsoNormal"><span lang="EN-US"> [45] .debug_str PROGBITS 0000000000000000 03985a90</span></p>
<p class="MsoNormal"><span lang="EN-US"> [46] .debug_loc PROGBITS 0000000000000000 03b92d35</span></p>
<p class="MsoNormal"><span lang="EN-US"> [47] .debug_pubtypes PROGBITS 0000000000000000 049b94f1</span></p>
<p class="MsoNormal"><span lang="EN-US"> [48] .debug_ranges PROGBITS 0000000000000000 04da98be</span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:SimSun">So how is it possible to use crash to load FreeBSD dump?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:SimSun"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:SimSun">Thanks in advance.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:SimSun">Jincheng Miao<o:p></o:p></span></p>
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