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In T_PAGEFLT, check for null proc pointer before dereferencing it.

This commit is contained in:
mycroft 1995-03-22 23:25:13 +00:00
parent 4255068068
commit 86feec27e6
1 changed files with 3 additions and 1 deletions
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4
sys/arch/i386/i386/trap.c
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@ -1,4 +1,4 @@
/* $NetBSD: trap.c,v 1.73 1995/03/14 14:43:59 scottb Exp $ */
/* $NetBSD: trap.c,v 1.74 1995/03/22 23:25:13 mycroft Exp $ */
#undef DEBUG
#define DEBUG
@ -306,6 +306,8 @@ trap(frame)
goto out;
case T_PAGEFLT: /* allow page faults in kernel mode */
if (p == 0)
goto we_re_toast;
pcb = &p->p_addr->u_pcb;
/*
* fusubail is used by [fs]uswintr() to prevent page faulting