Index: sys/arch/x86/x86/vm_machdep.c
===================================================================
RCS file: /cvsroot/src/sys/arch/x86/x86/vm_machdep.c,v
retrieving revision 1.25
diff -d -u -p -r1.25 vm_machdep.c
--- sys/arch/x86/x86/vm_machdep.c       11 Mar 2014 20:55:19 -0000      1.25
+++ sys/arch/x86/x86/vm_machdep.c       7 Aug 2016 19:04:49 -0000
@@ -249,6 +249,20 @@ cpu_lwp_free(struct lwp *l, int proc)
       if (proc && l->l_proc->p_md.md_flags & MDP_USEDMTRR)
               mtrr_clean(l->l_proc);
#endif
+       /*
+        * Free the deferred mappings
+        */
+       if (l->l_md.md_gc_ptp != NULL) {
+               struct vm_page *ptp;
+               struct pmap_page *pp;
+
+               while ((ptp = l->l_md.md_gc_ptp) != NULL) {
+                       pp = &ptp->mdpage.mp_pp;
+                       l->l_md.md_gc_ptp = pp->pp_link;
+                       LIST_INIT(&pp->pp_head.pvh_list);
+                       uvm_pagefree(ptp);
+               }
+       }
}

/*

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