From mboxrd@z Thu Jan 1 00:00:00 1970 From: Benjamin Herrenschmidt To: Peter Cordes , Subject: Re: kernel lockup Date: Wed, 16 May 2001 11:21:54 +0200 Message-Id: <20010516092154.16870@mailhost.mipsys.com> In-Reply-To: <20010516010328.D19015@llama.nslug.ns.ca> References: <20010516010328.D19015@llama.nslug.ns.ca> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Sender: owner-linuxppc-dev@lists.linuxppc.org List-Id: >bigfoot:~# kbdrate -h >kbdrate: invalid option -- h >Machine check in kernel mode. >Caused by (from SRR1=c9030): Unknown values in msr > > What do I do to debug this? > > The machine is totally locked, not even the SysRQ combination does >anything. (control+command+power still resets though, since it is handled >in hardware on oldworlds.) Well, I guess that kbdrate is yet another dumb x86'ism that will directly tap the hardware of a PC's keyboard controller... Well, I may be wrong, but machine check usually means that you are trying to access non-existing hardware. There should be other informations displayed about the crash. Those should allow you to lookup the location of it in System.map Ben. ** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/