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Re: port-i386/42966: kernel built from today's netbsd-5 crashes

The following reply was made to PR port-i386/42966; it has been noted by GNATS.

From: Anne Bennett <>
Subject: Re: port-i386/42966: kernel built from today's netbsd-5 crashes
Date: Thu, 18 Mar 2010 14:12:28 -0400

 David Holland <>:
 (For completeness, with respect to time slowing down and mouse
 selections going wonky in the old kernel booted "by name":)
 >  Was the weirdness you saw repeatable, or persist after a hard reset or
 >  power cycle? If it just happened once after you had the kernel problem
 >  it's quite possible that the bad kernel left the machine in a strange
 >  state.
 It stopped when I rebooted into the old kernel under the name
 /netbsd.  If it had happened only once I would have written it off,
 but the sequence of events was:
   1 Put new kernel in place as /netbsd, move old one to /netbsd.old .
   2 "shutdown -r now", machine crashes while booting, select "reboot"
     from db> prompt, which seems to cause a hard reset (machine goes
     through the BIOS's "discover devices" sequence).
   3 Boot into /netbsd.old by name.
   4 Weirdness occurs, but am able to put old kernel back as /netbsd .
   5 "shutdown -r now" (I think it crashed during shutdown, but I'm not
     sure I remember this part accurately).
   6 Boot into old kernel in normal location; all's well.
   7 Try again to build new kernel after removing old object files.
   8 Repeat steps 1-6 exactly.
 So it happened twice, and both times the weirdness occurred while
 I was booted into the old kernel using the name /netbsd.old, and
 stopped after I rebooted into the the old kernel using the name
 /netbsd.  The name may be a red herring; I did not have the patience
 to try, say, booting twice in a row into /netbsd.old.
 Anyway, this is just to answer your question for completeness; it
 is probably unrelated to the "i915 crash".  I am about to try
 building a new kernel using all the advice I've received over the
 past 2 days...
 Ms. Anne Bennett, as a private citizen:
 Also reachable more officially at work:

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