Index: arc.c
===================================================================
--- arc.c	(wersja 204804)
+++ arc.c	(kopia robocza)
@@ -1798,13 +1798,15 @@
 		else
 			arc_c = arc_c_min;
 
+		KASSERT((int64_t)arc_p >= 0, ("%u: arc_p=%jd", __LINE__, (intmax_t)arc_p));
 		atomic_add_64(&arc_p, -(arc_p >> arc_shrink_shift));
+		KASSERT((int64_t)arc_p >= 0, ("%u: arc_p=%jd", __LINE__, (intmax_t)arc_p));
 		if (arc_c > arc_size)
 			arc_c = MAX(arc_size, arc_c_min);
 		if (arc_p > arc_c)
 			arc_p = (arc_c >> 1);
 		ASSERT(arc_c >= arc_c_min);
-		ASSERT((int64_t)arc_p >= 0);
+		KASSERT((int64_t)arc_p >= 0, ("%u: arc_p=%jd", __LINE__, (intmax_t)arc_p));
 	}
 
 	if (arc_size > arc_c)
@@ -2044,7 +2046,7 @@
 
 		arc_p = MAX(0, (int64_t)arc_p - bytes * mult);
 	}
-	ASSERT((int64_t)arc_p >= 0);
+	KASSERT((int64_t)arc_p >= 0, ("%u: arc_p=%jd %p %p %p %p", __LINE__, (intmax_t)arc_p, state, arc_anon, arc_mru_ghost, arc_mfu_ghost));
 
 	if (arc_reclaim_needed()) {
 		cv_signal(&arc_reclaim_thr_cv);
@@ -2070,7 +2072,7 @@
 		if (arc_p > arc_c)
 			arc_p = arc_c;
 	}
-	ASSERT((int64_t)arc_p >= 0);
+	KASSERT((int64_t)arc_p >= 0, ("%u: arc_p=%jd", __LINE__, (intmax_t)arc_p));
 }
 
 /*
@@ -2202,6 +2204,7 @@
 		if (arc_size < arc_c && hdr->b_state == arc_anon &&
 		    arc_anon->arcs_size + arc_mru->arcs_size > arc_p)
 			arc_p = MIN(arc_c, arc_p + size);
+		KASSERT((int64_t)arc_p >= 0, ("%u: arc_p=%jd", __LINE__, (intmax_t)arc_p));
 	}
 }