Re: segmentation fault.

[Tyler Bird <suppressed>]

Philippe M. Chiasson wrote:
> Tyler Bird wrote:
>   
> > Ok,
> >
> > I have a system I converted from cgi to mod_perl.
> >
> > We recently upgraded to mod_perl 2.0 and apache 2.2 on RHL5
> >
> > I am having a problem.  When I refresh a certain page 5 times or about ( 
> > it's completely random )
> >
> > The page renders fine, but in my logs I see that an apache child died 
> > because of a segmentation fault I believe
> > here is the error or I guess notice message.
> >
> > [notice] child pid 25946 exit signal Segmentation fault (11) # ? do I 
> > have to worry about this notice ? what we are building will be a live 
> > system.
> >     
>
> The best way to get an understanding of what's happening is to get a backtrace
> from a core dump.
>
> http://perl.apache.org/docs/2.0/devel/debug/c.html#Getting_the_core_File_Dumped
>
> Will tell you a lot about how to get to a usefull backtrace.
>
> Once you  get something ouy of your crash, send it to this list and there
> might be a solution to your problem.
>
> ------------------------------------------------------------------------
> Philippe M. Chiasson     GPG: F9BFE0C2480E7680 1AE53631CB32A107 88C3A5A5
> http://gozer.ectoplasm.org/       m/gozer\@(apache|cpan|ectoplasm)\.org/
>
>   
I haven't used gdb that much.. but I have attached a core file.  Will 
you help me examine it's stack frames I can't seem to get a useful 
backtrace it doesn't seem llike there are any symbols, but I have not 
used this that much before.

Here is the initail message when I ran gdb core core.8130

(no debugging symbols found)
Using host libthread_db library "/lib/libthread_db.so.1".
Core was generated by `/usr/sbin/httpd -DDevSite -DSSL'.
Program terminated with signal 11, Segmentation fault.
#0  0x0051389a in ?? ()

... Ooes this mean that  the database has a threading problem?
Tyler
Tyler