Comment 14 for bug 2069324

The issue seems to appear also on RHEL7.
+++ This bug was initially created as a clone of Bug #1092877 +++

Description of problem:
The vsftpd hangs when the pam_exec.so is added to the /etc/pam.d/vsftpd.

---------------------------------------------
...
...
session include password-auth
session optional pam_exec.so /bin/echo
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Version-Release number of selected component (if applicable):
vsftpd-3.0.2-9.el7

How reproducible:
always

Steps to Reproduce:
1. add pam_exec.so calling echo to /etc/pam.d/vsftpd
2. add session_support=YES to /etc/vsftpd/vsftpd.conf
3. restart vsftpd
4. connect with a client to the vsftpd
5. login and send e.g. ls command

Actual results:
The vsftpd hangs in SIGCHLD handler

Expected results:
The vsftpd will work as intended.