On Sun, 8 Jun 2008, Kevin D. Kissell wrote: > > The RI error spits out a bunch of info, including epc which presumably points > > to the instruction causing the problem: ac85ffc0; this is 'sw a1,-64(a0)' > > > But unless the processor itself is actually defective, there is no way that > a SW instruction can cause an RI exception. Sometimes a kernel crash > is so violent that the kernel stack frame cannot be reliably decoded by > the crash dump code, and this would appear to be one of those cases. > I find the address of 0xac85ffc0 to be a bit suspicious, myself. That's > a kseg1 (non-cacheable identity map) address for physical address > 0x0c85ffc0, which would be legitimate (though suspicious) if you had > 256MB of RAM, but the boot log quote you posted earlier suggests > that you've only got 16M. Is there really memory of some kind at > that address? Are you calling routines in a boot ROM from Linux? Well, 0xac85ffc0 is the instruction word corresponding to 'sw a1,-64(a0)'. :) The actual address of the failure is apparently 0x004e010c, which is pretty much a standard location somewhere within a user executable proper. Maciej
