Re: Weird Crash - "WAITING_TO_RUNNING"

[Nathan <nathan.stocks () gmail com>]

On Sun, Jan 9, 2011 at 10:25 PM, David Fifield <david () bamsoftware com>wrote:

> On Wed, Jan 05, 2011 at 04:07:41PM -0700, Nathan wrote:
> > > I looked through the logs and identified revisions that are more likely
> > > to have changed something in NSE betweern 5.35DC1 and 5.36TEST1. I know
> > > this is asking a lot, but if the --datadir doesn't solve it, please try
> > > building and testing each of these revisions:
> > >
> > > 19514 19515 20266 20267 20632 20633
> > >
> > > Starting from a Subversion checkout, you will run
> > >
> > > svn update --ignore-externals -r 19514 . nbase ncat nping nsock zenmap
> > >
> > > Then build and test, using "--datadir .". Then move on to 19515, 20266,
> > > etc. (You don't have to check out again every time.)
> >
> > No, I was not using "--datadir ." before.
> >
> > NOW for the long-awaited testing:
> >
> > Here's the command I used to set up nmap each time (from an svn
> checkout):
> > $ svn update --ignore-externals -r $REVISION . nbase ncat nping nsock
> > zenmap && make clean && ./configure && make
> >
> > Here's the command I'm using to test each of the versions you indicated:
> >
> > $ time /usr/bin/sudo ./nmap --datadir . -sS -sV -T4 -p 1-65535
> > 74.62.92.70 -P0 -v
> >
> > ...while in a separate shell I run the following command to see the
> > total RAM usage at the END of the run (obviously RAM usage varies
> > quite a bit during the run):
> >
> > $ while /bin/true ; do sleep 1 && echo "---------" && date && cat
> > /proc/meminfo  | grep MemFree ; done
> >
> > Note that nothing else is running on the box at the time except my SSH
> > session to it.
> >
> > ==> r19514: <==
> >
> > Elapsed time: 14m12s
> > Memory usage: 4GB (crashed)
> >
> > ==> r19515 <==
> >
> > Elapsed time: 13m31s
> > Memory usage: 4GB (crashed)
> >
> > ==> r20266 <==
> >
> > Elapsed time: 14m36s
> > Memory usage: 4GB (crashed)
> >
> > ==> r20267 <==
> >
> > Elapsed time: 13m58s
> > Memory usage: 4GB (crashed)
> >
> > ==> r20632 <==
> >
> > Elapsed time: 14m21s
> > Memory usage: 4GB (crashed)
> >
> > ==> r20633 <==
> >
> > Elapsed time: 13m5s
> > Memory usage: 4GB (crashed)
> >
> > -------------
> >
> > So what in the world did I miss?  Is this "--data_dir ." option
> > messing things up?  I wouldn't expect any crashes in revisions after
> > the nse_main.lua change...and yet they're all crashing.  The 'svn
> > updates' always had at least a decent number of files listed as having
> > been modified in the update.
>
> This is very strange. Do you have any local changes in your working
> directory? (Run "svn status" and see if there's anything other than "?"
> and "X".)
>
> I assume the same crashes don't happen without --datadir?
>
> David Fifield

Wow, this is got to be one of my slowest responses ever--2 months.  (sorry -
I was pulled off to other projects)

First, no there were never any local changes in the local working directory
of nmap.  Running "svn stat" on any of the checked out versions produces:

---------------
X      nping
X      nsock
X      nbase
X      ncat
X      zenmap

Performing status on external item at 'nsock'

Performing status on external item at 'nbase'

Performing status on external item at 'zenmap'

Performing status on external item at 'ncat'

Performing status on external item at 'nping'
---------------

Second, no, actually.  When I omit "--data-dir ." -- then the crashes still
occur.  Perhaps the compiled-in-place-but-not-installed binary is pulling in
libraries from the other installed versions or something (?)

Anyway, now 5.51 has been released, I'll go test that tomorrow morning and
see how that behaves.

~ Nathan
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