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Re: kern/53096 (netbsd-8 crash on heavy disk I/O)

The following reply was made to PR kern/53096; it has been noted by GNATS.

From: Roy Bixler <>
Subject: Re: kern/53096 (netbsd-8 crash on heavy disk I/O)
Date: Mon, 2 Apr 2018 09:47:56 -0600

 On Tue, Mar 20, 2018 at 05:34:34PM +0000, wrote:
 > Synopsis: netbsd-8 crash on heavy disk I/O
 > State-Changed-From-To: closed->open
 > State-Changed-By:
 > State-Changed-When: Tue, 20 Mar 2018 17:34:34 +0000
 > State-Changed-Why:
 > hannken wants to investigate it more.
 Good call, as this seems to be a difficult-to-reproduce issue.  I
 reverted to going to regular builds and I just had the same problem
 today while trying to do a "cvs up" on pkgsrc to go from -2017Q4 to
 2018Q1.  The kernel version is:
 NetBSD 8.0_BETA NetBSD 8.0_BETA (GENERIC.201803222040Z) amd64
 The backtrace from the crash dump was very similar.  I will try to
 reproduce the problem with a gdb-enabled kernel as recommended by
 Roy Bixler <>
 "The fundamental principle of science, the definition almost, is this: the
 sole test of the validity of any idea is experiment."
 -- Richard P. Feynman

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