'Unable to read from thread kernel pipe' error in Apache

[Clement Laforet]

On Fri, 16 Jul 2004 01:22:25 -0400 (EDT)
Will McCutcheon <freebsd at toyingwithfate.com> wrote:

> Clement Laforet wrote:
> 
> > Can you do a "ldd /usr/local/sbin/httpd" ?
> 
> $ ldd /usr/local/sbin/httpd
> /usr/local/sbin/httpd:
<snip output>
apache2 is not linked against any thread library. That's a good start ;-)

> > Futhermore, it will be great if you can provide me a backtrace.
> 
> It took me some research to figure out how to properly debug a crashing 
> Apache child, but I ultimately figured it out by combining your 
> instructions with the ones found here: 
> http://httpd.apache.org/dev/debugging.html
>
> Here's what I got:
> 
> (gdb) bt
> #0  0x283d1dcf in kill () from /lib/libc.so.5
> #1  0x283c6878 in raise () from /lib/libc.so.5
> #2  0x2843ef82 in abort () from /lib/libc.so.5
> #3  0x2907f565 in _thread_exit () from /usr/lib/libc_r.so.5
> #4  0x2907d345 in _thread_kern_sig_undefer () from /usr/lib/libc_r.so.5
> #5  0x2907ca94 in _thread_kern_sched_state_unlock () from /usr/lib/libc_r.so.5
> #6  0x2907c445 in _thread_kern_scheduler () from /usr/lib/libc_r.so.5
> 
> Anything especially revealing?  Thanks for helping me out!

It's not very informative ;-)
According to previous ldd output, apache2 doesn't call libc_r of any thread lib.
"ldd /usr/local/libexec/apache2/libphp4.so" should help us to know if it comes from here.
can you send me your modules list too ?

FYI, I run IMP-4.0-cvs on apache 2.0.50 (prefork) + php 4.3.7 without any problems.

clem
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