Subject: panic: uvm_unmap_remove: has mapping (3.0 DEBUG kernel)
To: None <port-vax@netbsd.org>
From: Hans Rosenfeld <rosenfeld@grumpf.hope-2000.org>
List: port-vax
Date: 03/09/2006 14:35:58
Hello,

when trying to boot a 3.0 VAX kernel I built to for chasing that SGEC
bug the system crashes as soon as init is started:

boot device: sd0
root on sd0a dumps on sd0b
init: copying out path `/sbin/init' 11
panic: uvm_unmap_remove: has mapping
Stopped in pid 1.1 (init) at    netbsd:uvm_unmap_remove+0x2e0:  movab 0x1000(r2), r2
db> trace
panic: uvm_unmap_remove: has mapping
Stack traceback :
0x876e6e6c:
uvm_unmap_remove+0x2e0(0x83e34000,0x7f7ff000,0x7f800000,0x876e6f0c,0)
0x876e6ec8: sys_munmap+0x133(0x83e33000,0x876e6f60,0x876e6f58)
0x876e6f10: syscall+0x11d(0x876e6fb4)
db>

This is caused by a debug check in uvm/uvm_map.c which seems to be quite
new, at least 2.1 didn't have it.

Any ideas?


 - Hans Rosenfeld

-- 
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