Return
-
Title
Upgrade from QAS 3 to 4 causes an application crashes -
Description
Upgrade from QAS 3 to 4 causes an application crashes
-
Cause
The old version of the library is loaded into memory before the QAS upgrade, then when they access an on-disk new library that links to the in-memory, it will fail. The application must be restarted.Here is what happens:Program makes a call to PAM, libvas is loaded into memory.
VAS is upgraded.
Program makes another PAM call. The on-disk NEW pam_vas3.so is linked to libvas, and tries to use the NEW function pam_vas_cleanup_user_state.
The in-memory OLD libvas is called, which doesn't have that function, and thus the break seen.
-
Resolution
1 - stop all running application that interact with QAS before upgrading.
All services that can have QAS interactions must be restarted or you can reboot the machine after upgrading.