This bug was introduced in commit 93adc329
Symptom is failure of test 2.7

Some portions of tests 21.30 and 21.34 failed with accounting and
priority basic. These changes disable portions of those tests as
needed based upon configuration.

FreeBSD requires this to build; overlooked in 2d9e999f.

Update information about modified functions and data structures.

It was leaking memory otherwise

_allocate_sc() is heavily used within the scheduler, change to
stack allocation from heap to avoid constant churn on xmalloc()/xfree().

Bug 3420.

test1.63 was failing periodically due to a race condition. A signal
  was being sent to srun before the signal handler thread was spawned.

Too closely related to working_cluster_rec.

CID 16088[1-4]

Could be used in bit_ffs and bit_fls functions rather than
existing for loops.

Bug 1599

Add new knl.conf parameter to the capmc_suspend and capmc_resume
  programs. They are not used by those programs, but we need to
  prevent an error if those new parameters are used.

Reset a job's memory limit based upon what's available after node
  reboot, which can change on a KNL if the MCDRAM mode is changes
  on reboot

This bug was likely the root cause of bug 3366. If the backfill scheduler
  allocates resources for a batch job and a node reboot is required, the
  batch launch RPC would be sent to the agent. At that point, there is a
  race condition between the agent and the job_time_limit() function
  testing for boot completion. If the job_time_limit() function ran
  first, it would trigger a second launch RPC request getting sent to
  the agent.
bug 3366

Clean up logic to test if job is configuring
bug 3366

Do not launch a batch step while the job is configuring. Previous
  logic checked for the PrologSlurmctld running, but not nodes
  booting. Checking the job's CONFIGURING state flag will validate
  both.
bug 3366

Add check to avoid step allocation logic from executing job
  configuration completion logic multiple times (check if job
  is configurating before clearing flag and resetting time limit).
bug 3366

slurmctld/agent race condition fix: Prevent job launch while PrologSlurmctld
    daemon is running or node boot in progress.
bug 3366

This is required to manage the configuration completion.
bug 3366

This will be required to lock the job structure
bug 3366

Remove the return value from the agent_retry() function. It is not
  used anywhere and needs to be removed to run as a pthread.
bug 3366

Reasonable NFS systems do not need a minute to propagate changes.