Index: sys/cddl/compat/opensolaris/sys/proc.h
===================================================================
--- sys/cddl/compat/opensolaris/sys/proc.h	(wersja 220024)
+++ sys/cddl/compat/opensolaris/sys/proc.h	(kopia robocza)
@@ -77,8 +77,12 @@
 	ASSERT(state == TS_RUN);
 	ASSERT(pp == &p0);
 
-	error = kproc_kthread_add(proc, arg, &zfsproc, &td, RFSTOPPED,
-	    stksize / PAGE_SIZE, "zfskern", "solthread %p", proc);
+	stksize /= PAGE_SIZE;
+	if (stksize > 0 && stksize < KSTACK_PAGES)
+		stksize = 0;
+
+	error = kproc_kthread_add(proc, arg, &zfsproc, &td, RFSTOPPED, stksize,
+	    "zfskern", "solthread %p", proc);
 	if (error == 0) {
 		thread_lock(td);
 		sched_prio(td, pri);