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Move nstacks assertion and stack assignment to an earlier time, before 

the sa_vp_repossess call. From Stephan Uphoff.
This commit is contained in:
fvdl 2003-07-17 20:34:41 +00:00
parent 9c3018b9f2
commit 091ff13b7b
1 changed files with 7 additions and 6 deletions
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13
sys/kern/kern_sa.c
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@ -1,4 +1,4 @@
/* $NetBSD: kern_sa.c,v 1.17 2003/07/17 18:16:58 fvdl Exp $ */
/* $NetBSD: kern_sa.c,v 1.18 2003/07/17 20:34:41 fvdl Exp $ */
/*-
* Copyright (c) 2001 The NetBSD Foundation, Inc.
@ -37,7 +37,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: kern_sa.c,v 1.17 2003/07/17 18:16:58 fvdl Exp $");
__KERNEL_RCSID(0, "$NetBSD: kern_sa.c,v 1.18 2003/07/17 20:34:41 fvdl Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@ -941,20 +941,21 @@ sa_upcall_userret(struct lwp *l)
lwp_exit(l);
}
KDASSERT(sa->sa_nstacks > 0);
st = sa->sa_stacks[--sa->sa_nstacks];
SCHED_ASSERT_UNLOCKED();
l2 = sa_vp_repossess(l);
SCHED_ASSERT_UNLOCKED();
if(l2 == NULL) {
if (l2 == NULL) {
sadata_upcall_free(sau);
/* No need to put st back */
lwp_exit(l);
}
KDASSERT(sa->sa_nstacks > 0);
st = sa->sa_stacks[--sa->sa_nstacks];
DPRINTFN(9,("sa_upcall_userret(%d.%d) nstacks-- = %2d\n",
l->l_proc->p_pid, l->l_lid, sa->sa_nstacks));
if (sa_upcall0(l, SA_UPCALL_UNBLOCKED | SA_UPCALL_DEFER, l, l2, 0, NULL, sau,