nonmoving: Eagerly flush all capabilities' update remembered sets

(cherry picked from commit 2fa79119570b358a4db61446396889b8260d7957)

1 files changed, 4 insertions, 2 deletions

diff --git a/rts/sm/GC.c b/rts/sm/GC.c
index 5c15b0ec9a..a9c9dffa0b 100644
--- a/rts/sm/GC.c
+++ b/rts/sm/GC.c
@@ -738,11 +738,13 @@ GarbageCollect (uint32_t collect_gen,
     }
   } // for all generations
 
-  // Flush the update remembered set. See Note [Eager update remembered set
+  // Flush the update remembered sets. See Note [Eager update remembered set
   // flushing] in NonMovingMark.c
   if (RtsFlags.GcFlags.useNonmoving) {
       RELEASE_SM_LOCK;
-      nonmovingAddUpdRemSetBlocks(&gct->cap->upd_rem_set.queue);
+      for (n = 0; n < n_capabilities; n++) {
+          nonmovingAddUpdRemSetBlocks(&capabilities[n]->upd_rem_set.queue);
+      }
       ACQUIRE_SM_LOCK;
   }