Date: Sat, 02 Aug 2003 02:11:24 -0700 From: Terry Lambert <tlambert2@mindspring.com> To: Eivind Olsen <eivind@aminor.no> Cc: current@freebsd.org Subject: Re: Yet another crash in FreeBSD 5.1 Message-ID: <3F2B803C.21D38E0B@mindspring.com> References: <1079.192.168.0.3.1059811884.squirrel@webmail.aminor.no>
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Eivind Olsen wrote: > Can anyone suggest what I do next to find out about this crash? > Fatal trap 12: page fault while in kernel mode > fault virtual address = 0x14 Dereference of NULL pointer; reference is for element at offset 0x14 in some structure; this is the equivalent of 5 32 bit ints or pointers into the structure. > db> trace > g_dev_strategy(c2156024,c2153800,0,cfb528d0,c2099eca) at g_dev_strategy+0x29 > launch_requests(c299bf00,0,10000,ffffffff,47) at launch_requests+0x448 > vinumstart(c5ada2d0,0,c22ab000,cfb5294c,c02e5bc6) at vinumstart+0x2b2 gdb -k kernel.debug (gdb) list *(g_dev_strategy+29) [ ... ] (gdb) list *(launch_requests+448) [ ... ] (gdb) list *(vinumstart+2b2) [ ... ] Will give you the exact source lines involved, assuming you built a debug kernel. You don't actually need a crash dump to debug a stack traceback. -- Terry
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