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Date: Mon, 27 May 1996 08:49:16 +0800 (WST)
From: Peter Wemm <peter@spinner.DIALix.COM>
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Subject: kern/1257: System got blown away by "vm_pageout_scan: page not inactive?"
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>Number:         1257
>Category:       kern
>Synopsis:       System got blown away by "vm_pageout_scan: page not inactive?"
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    freebsd-bugs
>State:          open
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Sun May 26 17:50:01 PDT 1996
>Last-Modified:
>Originator:     Peter Wemm
>Organization:
Ha!
>Release:        FreeBSD 2.2-CURRENT i386
>Environment:

FreeBSD spinner.DIALix.COM 2.2-CURRENT FreeBSD 2.2-CURRENT #52: Sun May 26 18:15:13 WST 1996     peter@spinner.DIALix.COM:/home/src/sys/compile/SPINNER  i386

Very -current, after John's fixes to vm_fault.c (1.46) and
vm_pageout.c (v1.73).

>Description:

I was in the middle of a 'make world', which had
failed (my fault) and when I looked at the screen, it had reported
a pile of these errors.

After restarting the 'make', it spat out a few for each invocation of gcc,
and then went into a hard loop printing these out so fast that it was beating
the monitor scan rate.  By this time, all disk activity had stopped.  I
could break into ddb, it came from inside vm_pageout().

>How-To-Repeat:

I dont know how repeatable it is, it's only happened once.

>Fix:
	
The pageout is looping through "goto restart0" somehow.  I suspect that some
resource had completely run out or leaked away, causing all other processes
to sleep.
>Audit-Trail:
>Unformatted: