panic: ffs_blkfree: freeing free frag

Wilkinson,Alex Alex.Wilkinson at dsto.defence.gov.au
Fri May 2 00:20:20 PDT 2003


What is a DDB backtrace ? I thought you have already doen the backtrace with:

(kgdb) bt
#0  doadump () at /usr/home/stefan/freebsd/src/sys/kern/kern_shutdown.c:238
#1  0xc022bf33 in boot (howto=260)
    at /usr/home/stefan/freebsd/src/sys/kern/kern_shutdown.c:370
#2  0xc022c27b in panic ()

....

And why would being in X affect doing a DDB ?

 - aW



	:I just got this panic I'd like to report.  I was doing stuff in X, thus
	:I cannot provide a DDB backtrace.
	:
	:
	:Script started on Thu May  1 15:17:46 2003
	:GNU gdb 5.2.1 (FreeBSD)
	:Copyright 2002 Free Software Foundation, Inc.
	:GDB is free software, covered by the GNU General Public License, and you are
	:welcome to change it and/or distribute copies of it under certain conditions.
	:Type "show copying" to see the conditions.
	:There is absolutely no warranty for GDB.  Type "show warranty" for details.
	:This GDB was configured as "i386-undermydesk-freebsd"...
	:panic: bremfree: removing a buffer not on a queue
	:panic messages:
	:---
	:panic: ffs_blkfree: freeing free block


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