MFC VIMAGE fixes to 11-stable

[peter.blok at bsd4all.org]

All,

I’m running jails and bhyve using netgraph bridge. The jails are using Devin Teske’s jng and I have adapted iohyve to use the same netgraph bridge.

I haven’t had any panic’s after applying revisions 306684, 312943, 315131, 315469, 307235, 313001, 315136 and 315741.

Can someone please MFC them to 11-stable?

I’m starting and stopping jails in a continous loop. I have added some extra code to track an occasional panic in pf_purge_expired_states, but so far no luck.

I also have a change in zone_release to fix another panic and leak in slab_free_item. The issue is that zone_release tries to release a keg that never belonged to the zone it is trying to release. With my limited knowledge, i think that should not happen.

--- vm/uma_core.c	(revision 317156)
+++ vm/uma_core.c	(working copy)
@@ -2846,7 +2846,8 @@
 				KEG_LOCK(keg);
 			}
 		}
-		slab_free_item(keg, slab, item);
+		if (keg == slab->us_keg)
+			slab_free_item(keg, slab, item);
 		if (keg->uk_flags & UMA_ZFLAG_FULL) {
 			if (keg->uk_pages < keg->uk_maxpages) {
 				keg->uk_flags &= ~UMA_ZFLAG_FULL;


Peter