parker@waters.UUCP (Ross Parker) (12/08/87)
Reply-Path: In the last few days, we have been having a problem with one of our Microvax II's running Ultrix 1.2A. This machine has been crashing a couple of times daily with a "panic: bad rmfree". Is there a known bug and (hopefully) fix for this problem? We don't have source. The crash seems to occur in code that is accessing an x.25 driver. Another problem that this has aggrevated... I have tried in the past to use adb to determine the cause of the problem, and have not seen results that even come close to those in "Using ADB to Debug the Kernel" (an article in the 4.2 and 4.3 System Manager's manual). In particular, there are two main problems: stack traces generated with '$c' in Ultrix show essentially nothing, usually just "_sleep() from <some address>". The other main problem is that many of the adb scripts that I have (that I *think* were taken from a 4.2bsd system - that was before my time) produce results that I don't quite believe (the *other* problem is that I'm far from being a whiz at adb!). For example, the 'proc' script shows process ids that do not show up with 'ps kaxl'. Is there some inherent difference between Ultrix and Unix that causes '$c' to not work correctly? Are things set up differently so that 4.2 adb scripts will not work? If so, where can I get the equivalent scripts for Ultrix (1.2 and 2.0)? Hope someone can help... Ross Parker uunet!ubc-vision!mprg!parker | Microtel Pacific Research Ltd. | You can't erase the dream, Burnaby, B.C., | you can only wake me up... Canada, eh? |