Fix kernel crash when a user tries to switch to nonexistent terminal.
Reported by Gabor Sebestyen in PR port-atari/48599. Should be pulled up to all netbsd-6 branches.
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4893e5b805
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7e3311382f
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@ -1,4 +1,4 @@
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/* $NetBSD: ite.c,v 1.71 2011/06/05 16:25:12 tsutsui Exp $ */
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/* $NetBSD: ite.c,v 1.72 2014/02/19 11:40:31 tsutsui Exp $ */
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/*
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* Copyright (c) 1988 University of Utah.
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@ -44,7 +44,7 @@
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: ite.c,v 1.71 2011/06/05 16:25:12 tsutsui Exp $");
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__KERNEL_RCSID(0, "$NetBSD: ite.c,v 1.72 2014/02/19 11:40:31 tsutsui Exp $");
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#include "opt_ddb.h"
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@ -665,8 +665,8 @@ ite_switch(int unit)
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struct ite_softc *sc;
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extern const struct cdevsw view_cdevsw;
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sc = getitesp(unit);
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if ((sc->flags & (ITE_ATTACHED | ITE_INITED)) == 0)
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sc = device_lookup_private(&ite_cd, unit);
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if (sc == NULL || (sc->flags & (ITE_ATTACHED | ITE_INITED)) == 0)
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return;
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/*
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