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  1. MariaDB Server
  2. MDEV-21385

PAM v2 plugin produces lots of zombie processes

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      Description

      The authentication using the PAM v2 module works, but produces a lot of zombie processes.

      $ ps aux | grep auth_pam_tool
      ...
       
      root      1637  0.0  0.0      0     0 ?        Z    Dez22   0:00 [auth_pam_tool] <defunct>
      root      1638  0.0  0.0      0     0 ?        Z    Dez22   0:00 [auth_pam_tool] <defunct>
      root      1639  0.0  0.0      0     0 ?        Z    Dez21   0:00 [auth_pam_tool] <defunct>
      root      1640  0.0  0.0      0     0 ?        Z    Dez21   0:00 [auth_pam_tool] <defunct>
      root      1641  0.0  0.0      0     0 ?        Z    Dez22   0:00 [auth_pam_tool] <defunct>
      root      1642  0.0  0.0      0     0 ?        Z    08:21   0:00 [auth_pam_tool] <defunct>
      ...
      

      Configuration details:

      • Using sssd with ldap backend for mariadb service
      • OS: CentOS 8

      Logs (to make clear authentifaction itself works):

      Dez 23 14:30:59 web1 mysqld[13717]: pam_sss(mariadb:auth): authentication success; logname= uid=27 euid=27 tty= ruser= rhost= user=web_<removed>
      Dez 23 14:31:01 web1 mysqld[13717]: pam_sss(mariadb:auth): authentication success; logname= uid=27 euid=27 tty= ruser= rhost= user=web_<removed>
      Dez 23 14:31:01 web1 mysqld[13717]: pam_sss(mariadb:auth): authentication success; logname= uid=27 euid=27 tty= ruser= rhost= user=web_<removed>
      

      /etc/pam.d/mariadb

      auth    required pam_sss.so domains=mariadb
      account required pam_sss.so domains=mariadb
      

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              Assignee:
              holyfoot Alexey Botchkov
              Reporter:
              fbezdeka Florian Bezdeka
              Votes:
              5 Vote for this issue
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              16 Start watching this issue

                Dates

                Created:
                Updated:
                Resolved: