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trace_enter, trace_exit: acquire kernel_lock for systrace.

This commit is contained in:
ad 2007-03-08 21:25:27 +00:00
parent 08287ce407
commit 7caf5b2025
1 changed files with 10 additions and 5 deletions
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15
sys/kern/kern_subr.c
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@ -1,4 +1,4 @@
/* $NetBSD: kern_subr.c,v 1.155 2007/03/04 06:03:06 christos Exp $ */
/* $NetBSD: kern_subr.c,v 1.156 2007/03/08 21:25:27 ad Exp $ */
/*-
* Copyright (c) 1997, 1998, 1999, 2002 The NetBSD Foundation, Inc.
@ -86,7 +86,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: kern_subr.c,v 1.155 2007/03/04 06:03:06 christos Exp $");
__KERNEL_RCSID(0, "$NetBSD: kern_subr.c,v 1.156 2007/03/08 21:25:27 ad Exp $");
#include "opt_ddb.h"
#include "opt_md.h"
@ -1384,8 +1384,13 @@ trace_enter(struct lwp *l, register_t code,
#endif
#ifdef SYSTRACE
if (ISSET(p->p_flag, PK_SYSTRACE))
return systrace_enter(l, code, args);
if (ISSET(p->p_flag, PK_SYSTRACE)) {
int error;
KERNEL_LOCK(1, l);
error = systrace_enter(l, code, args);
KERNEL_UNLOCK_ONE(l);
return error;
}
#endif
#endif /* SYSCALL_DEBUG || {K,P,SYS}TRACE */
return 0;
@ -1424,7 +1429,7 @@ trace_exit(struct lwp *l, register_t code, void *args, register_t rval[],
if (ISSET(p->p_flag, PK_SYSTRACE)) {
KERNEL_LOCK(1, l);
systrace_exit(l, code, args, rval, error);
KERNEL_UNLOCK_LAST(l);
KERNEL_UNLOCK_ONE(l);
}
#endif
#endif /* SYSCALL_DEBUG || {K,P,SYS}TRACE */