Critical bug fix in task/affinity when the CoresPerSocket is greater

    than the ThreadsPerCore (invalid memory reference).

NEWS

 This file describes changes in recent versions of SLURM. It primarily
 documents those changes that are of interest to users and admins.
 
+* Changes in SLURM 1.4.0-pre10
+==============================
+ -- Critical bug fix in task/affinity when the CoresPerSocket is greater
+    than the ThreadsPerCore (invalid memory reference).
+
 * Changes in SLURM 1.4.0-pre9
 =============================
  -- OpenMPI users only: Add srun logic to automatically recreate and 

src/plugins/task/affinity/dist_tasks.c

@@ -483,7 +483,7 @@ static char *_alloc_mask(launch_tasks_request_msg_t *req,
 	i = mask = 0;
 	for (s=0, s_miss=false; s<sockets; s++) {
 		for (c=0, c_hit=c_miss=false; c<cores; c++) {
-			for (t=0, t_hit=t_miss=false; t<cores; t++) {
+			for (t=0, t_hit=t_miss=false; t<threads; t++) {
 				if (bit_test(alloc_bitmap, i)) {
 					mask |= (1 << i);
 					(*whole_thread_cnt)++;