Subject: Re: machine hanging with trap: TLB miss
To: None <>
From: Toru Nishimura <>
List: port-pmax
Date: 08/08/1999 19:15:17
        [ ... random TLB miss seen on -current kernel ... ]
>> I just build a kernel form todays sup to test if the old SCSI problem
>> on my 5000/200 (headless) with newer kernels still exists.
>> The kernel (1.4D) builds fine, I manually convert it to aout and
>> reboot.
>> The kernel boots fine but after some minutes it always hangs with:
>> trap: TLB miss (load or instr. fetch) in kernel mode
>> status=0x8fc34, cause=0x30000008, epc=0x8014aed8, vaddr=0x200c5ba8
>> pid=109 cmd=syslogd usp=0x7ffffc10 ksp=0xc21cbe90
>> vaddr, pid, cmd usp and ksp vary but the problem always occurs after
>> some minutes.
> I'm experiencing similar symptoms for weeks.  Under heavy loads,
> kernel panics at ramdom.  Panic programs varies; sometimes, timed,
> syslogd, xterm, etc.  So far, I could not reach consistent conclusion.

I think the symptom was fixed by the recent change of splsoftclock()
definition made by Jason Thorpe.  Can someone comfirm whether the
ramdom panic is really cured in -current 1.4J kernel?

Tohru Nishimura
Nara Institute of Science and Technology