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From Brian Behlendorf <>
Subject Re: WWW Form Bug Report: "SIGBUS in httpd when used as proxy" on NeXT (fwd)
Date Wed, 17 Jul 1996 01:35:25 GMT

---------- Forwarded message ----------
Date: Tue, 16 Jul 1996 14:40:21 -0400 (EDT)
From: Manoj Kasichainula <>
To: Aram Mirzadeh <>
Subject: Re: WWW Form Bug Report: "SIGBUS in httpd when used as proxy" on NeXT (fwd)

On Sat, 13 Jul 1996, Aram Mirzadeh wrote:

> Rob Hartill said:
> > 
> > Submitter:
> > Operating system: NeXT, version: 3.3
> NeXT, or Linux? 

The server is on a NeXT, the browser is under Linux (important because
different Netscape bugs sometimes manifest themselves only on certain

> > Version of Apache Used: 1.1.1
> > Extra Modules used: everything except dld, db, and msql
> > URL exhibiting problem: (proxy server)
> > 
> > Symptoms:
> > --
> > First of all, I'm using Netscape 3.0b5a under
> > Linux kernel 2.0.4 to access the Apache proxy server. 
> > 
> > I get SIGBUS under some very weird conditions
> > when using the proxy server.
> I've heard of this before, and it only seems to happen when using 3.0b5,
> or b5a.  See if you can reinstall b4, or wait for b6, netscape already
> knows about this. 

I can't install b4. The requests _seem_ to be normal requests in the
access log, although I haven't gone over them very carefully. Even if it
is a Netscape bug, it shouldn't cause a SIGBUS in the server, right?

I've got a little bit of info to add now on a possibly related problem. I
installed 1.1.1 on my Linux box at home for testing CGI scripts. But when
I try to access the provided index page ("Congrats, Apache works!"), the
"Powered by Apache" gif will sometimes fail to load, and the image failed
pic will appear instead. This is without proxy, and there are no SIGBUSes.
What Netscape gets sometimes is a redirect message, as evidenced by the
enties in the access log: - - [16/Jul/1996:14:32:36 -0400] "GET / HTTP/1.0" 200
- - - [16/Jul/1996:14:32:36 -0400] "GET /apache_pb.gif
HTTP/1.0" 304 -

There is nothing abnormal in the error log, however. This is a
net-disconnected machine. So this is not a load problem. The only other
clue I have on this is that this particular time, I had to hit "Reload"
a few times before the redirects would start, and after that, reloads
always get redirects until I restart the server, not with kill -HUP but a
full kill and restart.

Manoj Kasichainula - | "Some people have entirely           |  too much free time on
Linux: 0% of the GPFs at 0% of the price   |  their hands."
Finger for PGP public key & Geek Code      |   - spaf

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