From owner-freebsd-current Sat Jan 23 11:07:08 1999 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id LAA03933 for freebsd-current-outgoing; Sat, 23 Jan 1999 11:07:08 -0800 (PST) (envelope-from owner-freebsd-current@FreeBSD.ORG) Received: from apollo.backplane.com (apollo.backplane.com [209.157.86.2]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id LAA03923 for ; Sat, 23 Jan 1999 11:07:01 -0800 (PST) (envelope-from dillon@apollo.backplane.com) Received: (from dillon@localhost) by apollo.backplane.com (8.9.2/8.9.1) id LAA48145; Sat, 23 Jan 1999 11:06:43 -0800 (PST) (envelope-from dillon) Date: Sat, 23 Jan 1999 11:06:43 -0800 (PST) From: Matthew Dillon Message-Id: <199901231906.LAA48145@apollo.backplane.com> To: Doug Rabson Cc: Peter Wemm , current@FreeBSD.ORG Subject: Re: panic: found dirty cache page 0xf046f1c0 References: Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG :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 :-- :Doug Rabson Mail: dfr@nlsystems.com :Nonlinear Systems Ltd. Phone: +44 181 442 9037 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message