Subject: -current TLB panics on 3100?
To: None <port-pmax@netbsd.org>
From: William O Ferry <woferry@iname.com>
List: port-pmax
Date: 11/07/1999 11:49:18
	For the past several months trying to run -current on my 3100 I have 
experienced frequent and random panics, all have had the message "trap: TLB 
miss (load or instr. fetch) in kernel mode".  I initially thought it might 
have been my machine overheating, as it always occurred during compiles and 
the machine was getting quite warm.  Now that the weather is cooling down 
though, and I have opened up the machine yet it still crashes frequently.  At 
the moment I can't even do a "make install" in /usr/src, it panics before it 
makes it out of the lib directory.  I've experienced this problem with 
basically all of the 1.4 -curent kernels, from 1.4A all the way through 1.4M.  
I'll have to give 1.4 or 1.4.1 a go as soon as I get the chance to download it

	Has anybody heard of anything like this?  Any clue what I could to about it?  
Here are a few of the messages I've seen this morning, both while doing a 
"make install" in /usr/src:

trap: TLB miss (load or instr. fetch) in kernel mode
status=0x8fc34, cause=0x30000000, epc=0x8014b628, vaddr=0x100
pid=251 cmd=xntpd usp=0x7ffffce0 ksp=0xc2163e90
stopped in xntpd at  trap+0x2f4:	lw	a2,0(v1)
db> t
trap+2f4  (ff3c,30000004,1000d030,42049c) ra 80030fdc sz 72
mips1_UserGenException+d4  (ff3c,30000004,1000d030,42049c) rz 42049c sz 0
PC 0x42049c: not in kernel space
_DYNAMIC_LINK+42049c (ff3c,30000004,1000d030,42049c) rz 0 sz 0
User-level: pid 251

trap: TLB miss (load or instr. fetch) in kernel mode
status=0x8fc34, cause=0x30000000, epc=0x8014b628, vaddr=0x100
pid=110 cmd=dhclient usp=7ffffc68 ksp=0xc2143e90
stupped in dhclient at  trap+0x2f4:	lw	a2,0(v1)
db> t
trap+2f4  (ff3c,b0000004,100042a4,40f9bc) ra 80030fdc sz 72
mips1_UserGenException+d4  (ff3c,b0000004,100042a4,40f9bc) rz 40f9bc sz 0
PC 0x40f9bc: not in kernel space
_DYNAMIC_LINK+40f9bc (ff3c,b0000004,100042a4,40f9bc) rz 0 sz 0
User-level: pid 110

	Any help would be greatly appreciated.  Thanks in advance.



                                                          Will Ferry

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woferry@iname.com