Bus error on Kebnekaise

As a side effect of the recent file system upgrade we are observing a small set of user-installed programs crashing with a bus error when loading dynamic libraries from the PFS file system. We are working with the vendor to find the root cause of these and are running some bulk operations on the file system to mitigate the problem.

The problem is elusive and may only affect a particular set of nodes and may disappear when hashing or otherwise fully reading the affected files on that node, or reinstalling the affected files in another location.

We do not have any indication that it is affecting data integrity in any way, it seems to require a particular type of memory mapping that is predominantly only used when loading code.