[Persistentperl-users] kernel error messages from perperl_backend

[Michael M. <mi...@np...>]

Hi,

I'm using the latest PerPerl 2.22-1 release with OpenWebmail 2.30 running on 
Fedora Core 1.

Everything works fine, but in the /var/log/messages file I get the following 
error all the time:

Jan 28 12:00:01 server kernel: application bug: perperl_backend(4336) has 
SIGCHLD set to SIG_IGN but calls wait().
Jan 28 12:00:01 server kernel: (see the NOTES section of 'man 2 wait'). 
Workaround activated.
Jan 28 12:01:01 server kernel: application bug: perperl_backend(4336) has 
SIGCHLD set to SIG_IGN but calls wait().
Jan 28 12:01:01 server kernel: (see the NOTES section of 'man 2 wait'). 
Workaround activated.

Reading that relevant section of the man page says:

NOTES
       The Single Unix Specification describes a flag SA_NOCLDWAIT  (not  sup-
       ported under Linux) such that if either this flag is set, or the action
       for SIGCHLD is set to SIG_IGN then children that  exit  do  not  become
       zombies and a call to wait() or waitpid() will block until all children
       have exited, and then fail with errno set to ECHILD.

       The original POSIX standard left the behaviour of  setting  SIGCHLD  to
       SIG_IGN  unspecified.   Later  standards,  including  SUSv2  and  POSIX
       1003.1-2001 specify the behaviour just described as  an  XSI-compliance
       option.   Linux  does  not conform to the second of the two points just
       described: if a wait() or waitpid() call is made while SIGCHLD is being
       ignored,  the  call  behaves  just  as  though  SIGCHLD  were not being
       ignored, that is, the call blocks until the next child  terminates  and
       then returns the PID and status of that child.


Is this something we should be concerned about or can we fix it somehow?

Thanks.

Michael.