diff -NurpP --minimal linux-2.6.16.11-vs2.1.1-rc18.8/kernel/exit.c linux-2.6.16.11-vs2.1.1-rc18.8.1/kernel/exit.c
--- linux-2.6.16.11-vs2.1.1-rc18.8/kernel/exit.c	2006-04-26 19:07:00 +0200
+++ linux-2.6.16.11-vs2.1.1-rc18.8.1/kernel/exit.c	2006-05-01 01:58:47 +0200
@@ -673,7 +673,9 @@ static void forget_original_parent(struc
 		p = list_entry(_p,struct task_struct,ptrace_list);
 
 		/* check for reaper context */
-		BUG_ON(p->xid != reaper->xid);
+		vxdprintk((p->xid != reaper->xid),
+			"reaper mismatch: %p[%d,#%u] <> %p[%d,#%u]",
+			p, p->pid, p->xid, reaper, reaper->pid, reaper->xid);
 
 		choose_new_parent(p, reaper);
 		reparent_thread(p, father, 1);