The SBM fails to start. Log entries show the service stopping, but does not show a reason why.
Kernel-side fixes to resolve the StackGuard vulnerability, included a change to increase the stack guard gap size from one page to 1 MiB. On an SBM, this caused Java to fail to allocate memory from the same (already allocated) space, and segfault as a result.
Our workaround is to increase the stack size to 2048k, to allow Java to allocate the appropriate amount of memory to operate the SBM.