[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: Bug Hunting 101 - Finding "The" Alpha Bug
- To: misc_(_at_)_openbsd_(_dot_)_org
- Subject: Re: Bug Hunting 101 - Finding "The" Alpha Bug
- From: "J.C. Roberts" <unknown_(_at_)_abac_(_dot_)_com>
- Date: Thu, 22 Dec 2005 00:23:59 -0800
- Organization: None
On Wed, 21 Dec 2005 12:13:54 -0800, "J.C. Roberts" <unknown_(_at_)_abac_(_dot_)_com>
>I found something interesting, namely a (more than once)
>reported bug that looks very similar to "The" alpha bug. The primary
>difference is you get "cpu_switch_queuescan" rather than "cpu_switch" in
>the trace output.
>There is also another report that is vague but since it is missing the
>needed trace information, there's no way to tell if it's related.
Yes, the two bugs, one which shows "cpu_switch" in the trace output and
the other that shows "cpu_switch_queuescan" in the trace output, are
I managed to reproduce the "cpu_switch_queuescan" output originally
reported from OpenBSD 3.3 while compiling 3.8-STABLE tonight.
The only change in the source files is that I enabled the
line in /src/sys/conf/GENERIC file. I'm going to try flipping this back
and forth a few times to see if it really is the deciding factor for
which output the bug displays.