lwp_update_creds(): acquire the kernel lock to avoid potential deadlock.
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@ -1,4 +1,4 @@
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/* $NetBSD: kern_lwp.c,v 1.50 2006/12/22 08:04:01 ad Exp $ */
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/* $NetBSD: kern_lwp.c,v 1.51 2006/12/23 08:39:47 ad Exp $ */
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/*-
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* Copyright (c) 2001 The NetBSD Foundation, Inc.
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@ -37,7 +37,7 @@
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: kern_lwp.c,v 1.50 2006/12/22 08:04:01 ad Exp $");
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__KERNEL_RCSID(0, "$NetBSD: kern_lwp.c,v 1.51 2006/12/23 08:39:47 ad Exp $");
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#include "opt_multiprocessor.h"
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@ -755,12 +755,14 @@ lwp_update_creds(struct lwp *l)
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p = l->l_proc;
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oc = l->l_cred;
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KERNEL_PROC_LOCK(l);
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simple_lock(&p->p_lock);
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kauth_cred_hold(p->p_cred);
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l->l_cred = p->p_cred;
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simple_unlock(&p->p_lock);
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if (oc != NULL)
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kauth_cred_free(oc);
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KERNEL_PROC_UNLOCK(l);
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}
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/*
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