Date: Fri, 07 Jun 1996 16:44:23 -0700 From: "Jordan K. Hubbard" <jkh@time.cdrom.com> To: Kevin Martin <sigma@pair.com> Cc: freebsd-bugs@freebsd.org Subject: Re: Randomly modified executables... Message-ID: <17108.834191063@time.cdrom.com> In-Reply-To: Your message of "Fri, 07 Jun 1996 14:48:47 EDT." <199606071848.OAA09748@pair>
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> system and continue. In one case, cksum reported a file as different, but > it was OK immediately afterwards. Most of the changes have occurred under > extremely light load, in some cases with only one user logged in. There is > no evidence of foul play. I've seen this kind of behavior too. Except for one instance when it was actually a VM system bug (and this was a LONG time ago), it turned out to be bad cache ram in every instance. Single bit errors in the cache were causing files to show up with erroneous contents. If you do a `make world' in a continuous loop, you'll find that it aborts occasionally with a syntax error in one of the source files. Go look at the file in question and you'll find some strange error where a character has changed its value in some strategic spot. This is a sure sign! Jordan
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