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	Fri, 13 Feb 1998 11:07:30 +1100
Date: Fri, 13 Feb 1998 11:07:30 +1100
From: Bruce Evans <bde@zeta.org.au>
Message-Id: <199802130007.LAA14327@godzilla.zeta.org.au>
To: current@FreeBSD.ORG
Subject: panic in vm_pager_has_page()
Cc: dyson@FreeBSD.ORG
Sender: owner-freebsd-current@FreeBSD.ORG
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X-Loop: FreeBSD.ORG

This seems to fix the panic in vm_pager_has_page() when nfs file systems
are forcibly unmounted by `umount -Af -t nfs'.  (pagertab[OBJT_DEAD] is
invalid.)

Bruce

diff -c2 src/sys/vm/vm_fault.c~ src/sys/vm/vm_fault.c
*** src/sys/vm/vm_fault.c~	Tue Feb 10 05:17:46 1998
--- src/sys/vm/vm_fault.c	Tue Feb 10 05:17:47 1998
***************
*** 290,294 ****
  	while (TRUE) {
  
! 		if (object->flags & OBJ_DEAD) {
  			UNLOCK_AND_DEALLOCATE;
  			return (KERN_PROTECTION_FAILURE);
--- 290,294 ----
  	while (TRUE) {
  
! 		if (object->flags & OBJ_DEAD || object->type == OBJT_DEAD) {
  			UNLOCK_AND_DEALLOCATE;
  			return (KERN_PROTECTION_FAILURE);

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