Re: kern/47041 (amd64 kernel core dumps are broken)

[Taylor R Campbell <campbell+netbsd%mumble.net@localhost>]

   Date: Sun, 18 Nov 2012 00:36:37 +0000 (UTC)
   From: chs%NetBSD.org@localhost

   I've made a number of fixes to amd64 kernel dumps in -current
   and it's all working for me now.  is it working for you too?

Well, I just hit a panic on that machine...and (although the stack
trace from ddb that I caught flying by on the serial console was
enough to debug the problem) it didn't even make a kernel crash dump
because

dump Skipping crash dump on recursive panic
panic: wddump: polled command has been queued

Since I'm about to be messing with that machine's kernel and rebooting
anyway soon, I'll try and elicit a core dump with a newer kernel and
when it's not under the heavy load of a pkgsrc bulk build.