Index: sys/dev/hwpmc/hwpmc_mod.c
===================================================================
--- sys/dev/hwpmc/hwpmc_mod.c
+++ sys/dev/hwpmc/hwpmc_mod.c
@@ -4828,7 +4828,7 @@
 			nfree++;
 #endif
 		if (ps->ps_td != td ||
-		   ps->ps_nsamples == PMC_USER_CALLCHAIN_PENDING ||
+		   ps->ps_nsamples != PMC_USER_CALLCHAIN_PENDING ||
 		   ps->ps_pmc->pm_state != PMC_STATE_RUNNING)
 			continue;