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Status Future consideration
Created by Guest
Created on Mar 11, 2021

Workload Scheduler support for linux parameter "vsyscall=none isses"

see ticket IBM support request TS005150482:
IBM Workload Scheduler 9.5 Fixpack 3 - with linux parameter "vsyscall=none isses" every TWS command freezes
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environment:
TWS Client Version 5 Fickpack 03
operatingSystem: Linux:3.10.0-1160.11.1.el7.x86_64 64bit:x86_64
osVendor: RHEL:7.9:5.el7_9
processor: SOCKETS:1 CORES:1 THREADS:1 CLOCK:2599MHz ARCHITECTURE:x86_64
memory: MEM:1863004 SWAP:2097148
------------------------------------------
issues:
We want to make a company security certification (TISAX). For this reason we need to change our linux parameters: "vsyscall=none isses".
The workload scheduler should support this parameter.

Idea Priority High
Use Case
After setting the linux security feature "vsyscall=none isses" we are not able to execute any TWS command (for example conman, composer, rmstdlst). after we call the the command nothing happens, for example tws@ultws03: > conman # nothing happens: # - no prompt # - no output details: Virtual Syscalls provide an opportunity of attack for a user who has control of the return instruction pointer. To disable use of virtual syscalls, add the argument vsyscall=none to the default GRUB 2 command line for the Linux operating system in /etc/default/grub, in the manner below: GRUB_CMDLINE_LINUX="vsyscall=none"
RFE ID 149199
RFE URL
RFE Product IBM Workload Scheduler (IWS)