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If we have no console device it is possible to be

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1/ session leader
2/ Have a console device vnode (/dev/console)
3/ have  NULL pointer for a consoel tty struct.

fix the only case where the tty struct is referenced without a prior
check for existance.
This commit is contained in:
julian 1996-10-04 23:43:12 +00:00
parent 5b5236cec3
commit 9c239b9287
1 changed files with 2 additions and 2 deletions
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4
sys/kern/kern_exit.c
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@ -36,7 +36,7 @@
* SUCH DAMAGE.
*
* @(#)kern_exit.c 8.7 (Berkeley) 2/12/94
* $Id: kern_exit.c,v 1.38 1996/08/22 03:50:15 julian Exp $
* $Id: kern_exit.c,v 1.39 1996/09/13 09:17:03 bde Exp $
*/
#include "opt_ktrace.h"
@ -196,7 +196,7 @@ exit1(p, rv)
* drain controlling terminal
* and revoke access to controlling terminal.
*/
if (sp->s_ttyp->t_session == sp) {
if (sp->s_ttyp && (sp->s_ttyp->t_session == sp)) {
if (sp->s_ttyp->t_pgrp)
pgsignal(sp->s_ttyp->t_pgrp, SIGHUP, 1);
(void) ttywait(sp->s_ttyp);