diff --git a/sys/compat/linprocfs/linprocfs.c b/sys/compat/linprocfs/linprocfs.c
--- a/sys/compat/linprocfs/linprocfs.c
+++ b/sys/compat/linprocfs/linprocfs.c
@@ -1650,6 +1650,17 @@
 	return (0);
 }
 
+/*
+ * Filler function for proc/sys/kernel/core_pattern
+ */
+static int
+linprocfs_docore_pattern(PFS_FILL_ARGS)
+{
+
+	sbuf_printf(sb, "core\n");
+	return (0);
+}
+
 /*
  * Filler function for proc/sys/vm/min_free_kbytes
  *
@@ -2069,6 +2080,8 @@
 	    NULL, NULL, NULL, PFS_RD);
 	pfs_create_file(dir, "tainted", &linprocfs_dotainted,
 	    NULL, NULL, NULL, PFS_RD);
+	pfs_create_file(dir, "core_pattern", &linprocfs_docore_pattern,
+	    NULL, NULL, NULL, PFS_RD);
 
 	/* /proc/sys/kernel/random/... */
 	dir = pfs_create_dir(dir, "random", NULL, NULL, NULL, 0);