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Date:      Wed, 26 Mar 1997 13:51:06 +1030 (CST)
From:      Michael Smith <msmith@atrad.adelaide.edu.au>
To:        smc@servtech.com (Shawn Carey)
Cc:        freebsd-hackers@FreeBSD.ORG
Subject:   Re: Anyone else seen this?
Message-ID:  <199703260321.NAA24228@genesis.atrad.adelaide.edu.au>
In-Reply-To: <33388927.41C67EA6@servtech.com> from Shawn Carey at "Mar 25, 97 09:25:43 pm"

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Shawn Carey stands accused of saying:
> 
> Now that we are running 2.2-RELEASE, this anomaly appears to be
> something more serious than I originally thought, as gdb now stops the
> program with the message "Process killed due to text file modification",
> and sure enough, the file's date is changing but a diff between an idle
> copy and the "modified" executable is nil.  Furthermore, I have recently
> discovered that if I link the program with -static, the problem goes
> away.

This looks very much like a problem that has been reported many times
before, where one or more pages from a process' text are written back
to the file.  The pages aren't actually changed, but the file's timestamp
is obviously updated.

> says he has seen similar occurences, and John Dyson, who seems to have a
> full plate at the moment.

That he does.  If someone wanted to learn a little about the FreeBSD VM, 
this would be an excellent and worthwhile bug to squash.

> -Shawn Carey

-- 
]] Mike Smith, Software Engineer        msmith@gsoft.com.au             [[
]] Genesis Software                     genesis@gsoft.com.au            [[
]] High-speed data acquisition and      (GSM mobile)     0411-222-496   [[
]] realtime instrument control.         (ph)          +61-8-8267-3493   [[
]] Unix hardware collector.             "Where are your PEZ?" The Tick  [[



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