File squashfs-thread-limit of Package squashfs

diff -dupr squashfs4.4_orig/squashfs-tools/mksquashfs.c squashfs4.4/squashfs-tools/mksquashfs.c
--- squashfs4.4_orig/squashfs-tools/mksquashfs.c	2019-10-21 15:36:52.002369471 +0200
+++ squashfs4.4/squashfs-tools/mksquashfs.c	2019-10-21 15:37:13.402549491 +0200
@@ -4384,6 +4384,15 @@ void initialise_threads(int readq, int f
 		processors = sysconf(_SC_NPROCESSORS_ONLN);
 #endif
 	}
+	/* Every frag_thrd will:
+	 * * occupy a slot in the process table (_SC_CHILD_MAX), and will
+	 * * allocate SQUASHFS_FILE_MAX_SIZE (currently 1MiB), which is
+	 *   accounted towards the per-process datasize limit, and will
+	 * * open 1 file descriptor (_SC_OPEN_MAX).
+	 * Before we hit any of those limits on big irons, limit
+	 * ourselves to an impressive but sane arbitrary maximum.
+	 */
+	if (processors > 64) processors = 64;
 
 	if(multiply_overflow(processors, 3) ||
 			multiply_overflow(processors * 3, sizeof(pthread_t)))