VM FAULT

[Ian Lepore]

On Fri, 2014-11-28 at 12:05 +0000, Tony Moseby wrote:
> Hello,
> Now and then my system crashes at boot, sometimes freezes , sometimes I get following information (see below).I am running FreeBsd 8.2 with a marvel ethernet switch, someone who have seen orcan explain this?
> 
> vm_fault(0xc0bd4914, b82d3000, 1, 0) -> 1Fatal kernel mode data abort: 'Translation Fault (S)'trapframe: 0xd663edecFSR=00000005, FAR=b82d37a8, spsr=00000013r0 =c0bd40b8, r1 =0001bb40, r2 =feedfeed, r3 =00000040r4 =0000009c, r5 =c0bd4070, r6 =b82d3530, r7 =c4e72c00r8 =c0bd3d2c, r9 =c0bd3a30, r10=c0bdad60, r11=d663ee64r12=7ab16e37, ssp=d663ee38, slr=c091a844, pc =c0950118
> 

There's not really enough info in that panic output to figure out the
problem.  When it happens again, a backtrace (just enter bt at the
debugger prompt) might help.

I'm attaching a patch we used at $work when running 8.2 on a
marvell-based Dreamplug.  Maybe it will help, although the problem it
fixed for us was IO corruption on disk and network reads, so it doesn't
seem all that related.

-- Ian



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