Date: Sat, 23 Jan 1999 11:06:43 -0800 (PST) From: Matthew Dillon <dillon@apollo.backplane.com> To: Doug Rabson <dfr@nlsystems.com> Cc: Peter Wemm <peter@netplex.com.au>, current@FreeBSD.ORG Subject: Re: panic: found dirty cache page 0xf046f1c0 Message-ID: <199901231906.LAA48145@apollo.backplane.com> References: <Pine.BSF.4.01.9901231746480.59627-100000@herring.nlsystems.com>
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:I made it happen again by doing the same installworld but this time I
:caught it in the debugger. I'll leave the machine up for a while in case
:someone has some idea of how to debug it. The stacktrace looks like this:
:
:#0 Debugger () at ../../alpha/alpha/db_interface.c:260
:#1 0xfffffc000036c2c0 in panic () at ../../kern/kern_shutdown.c:444
:#2 0xfffffc00004942fc in vm_page_alloc () at ../../vm/vm_page.c:1041
:#3 0xfffffc00003a1b54 in allocbuf () at ../../kern/vfs_bio.c:1791
The panic message should be printing the address of the vm_page_t that
it caught.
From the debugger, dump that vm_page_t with 'print'.
print *0xADDRESS
Do about 8 print's bumping the address by 4 ( in hex ) for each.
It would be even better if we could figure out the contents and type
of the underlying object.
-Matt
Matthew Dillon
<dillon@backplane.com>
:--
:Doug Rabson Mail: dfr@nlsystems.com
:Nonlinear Systems Ltd. Phone: +44 181 442 9037
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