[Serusers] defunct process

Jan Janak jan at iptel.org
Sat Jun 7 00:31:37 CEST 2003


On 06-06 16:53, Andrei Pelinescu-Onciul wrote:
> On Jun 06, 2003 at 22:04, Wong Tsang Han <tsanghan at gmx.net> wrote:
> > Hello All,
> > 
> > I have installed ser-0.8.11pre29-1 on RedHat 9.0. When I start ser by script
> > /etc/init.d/ser or directly using /usr/sbin/ser, the process SOMETIMES hangs
> > at the Aliases line show below. When I list the process table, I observed
> > there was a defunct process. Now, this does not happen ALL the time when I
> > starts ser. Sometime, /use/sbin/ser or init script will start fine without a
> > hiccup. I also notice that the defunct process is ALWAYS the second lowest
> > process id among all ser processes. Can this be a case of race condition for
> > the parent process to exit without waiting for the child?
> > 
> > I did not encounter this using ser-0.8.10 on RedHat 7.3. However, I do
> > remember encountering this behavior once when running ser-0.8.10 on RedHat
> > 9.0, I have removed 0.8.10 and installed 0.8.11 since then for testing
> > 0.8.11. Could this be a problem of RedHat 9.0? Is anyone experience this or
> > am I the only one?
> 
> I'm afraid you are the only one :-) We haven't encoutered this before.
> 
> Could you send us the config file and could you also look in the syslog
> for lines starting with ser? (it might log some messages to syslog when
> it dies).

  I have seen this problem already. It seems to happen on RH 9 only. I
  have it on my todo list and plan to investigate it later. My guess is
  that there is some problem with glibc libraries in RH 9 because this
  happens also with older versions of ser and on RH 9 only.

  There are no error messages in syslog when this happens.

    Jan.

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