dstewart@fas.ri.cmu.edu (David B Stewart) (10/19/89)
I ported a driver using the Sun DVMA from Sun OS 3.x to Sun OS 4.0.3, on a Sun 3/160. Everything works well until I try to interrupt a program which is using the DVMA, such as typing ^C to break out of the program. At that time, the Sun crashes, offering the following error messages from the kernel: >Oct 18 01:07:57 helios vmunix: assertion failed: pmg->pmg_keepcnt == 1, file: ../../sun/vm_hat.c, line: 1574 >Oct 18 01:07:57 helios vmunix: panic: assertion failed >Oct 18 01:07:57 helios vmunix: syncing file systems... [9] [9] [7] [4] done I don't have the source code, so I can't even look at line 1574 to get an idea of what the problem is. I would appreciate any clues to the meaning of this error message, and possible ways to correct it. David B. Stewart, Dept. of Electrical and Computer Engineering, and The Robotics Institute, Carnegie Mellon University email: stewart@faraday.ece.cmu.edu, office: 412-268-7120; lab: 412-268-3652.