Date: Fri, 2 May 2003 11:21:17 +0200 From: Stefan Farfeleder <stefan+current@fafoe.dyndns.org> To: "Wilkinson,Alex" <Alex.Wilkinson@dsto.defence.gov.au> Cc: current@freebsd.org Subject: Re: panic: ffs_blkfree: freeing free frag Message-ID: <20030502092117.GA551@wombat.fafoe> In-Reply-To: <20030502164146.K367@squirm.dsto.defence.gov.au> References: <20030501135011.GA568@wombat.fafoe> <20030502164146.K367@squirm.dsto.defence.gov.au>
next in thread | previous in thread | raw e-mail | index | archive | help
On Fri, May 02, 2003 at 04:43:32PM +0930, Wilkinson,Alex wrote: > 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 () > > .... This backtrace was obtained by running GDB on a kernel crash dump. DDB is the in-kernel debugger which allows you to see a backtrace (among other things) at the time the panic happens, before dumping and rebooting. > And why would being in X affect doing a DDB ? This is a notebook that lacks a serial interface. DDB can only print to the console, so it just tries to produce a dump and reboots. Regards, Stefan Farfeleder
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20030502092117.GA551>