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proc_reparent() must be called with proclist write lock held. Make it so.

This commit is contained in:
pk 2004-05-04 21:58:47 +00:00
parent 2fb3dac280
commit b2260877bf
1 changed files with 6 additions and 2 deletions
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8
sys/kern/sys_process.c
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@ -1,4 +1,4 @@
/* $NetBSD: sys_process.c,v 1.87 2004/05/04 21:33:40 pk Exp $ */
/* $NetBSD: sys_process.c,v 1.88 2004/05/04 21:58:47 pk Exp $ */
/*-
* Copyright (c) 1982, 1986, 1989, 1993
@ -89,7 +89,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: sys_process.c,v 1.87 2004/05/04 21:33:40 pk Exp $");
__KERNEL_RCSID(0, "$NetBSD: sys_process.c,v 1.88 2004/05/04 21:58:47 pk Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@ -399,6 +399,7 @@ sys_ptrace(l, v, retval)
if (SCARG(uap, req) == PT_DETACH) {
/* give process back to original parent or init */
s = proclist_lock_write();
if (t->p_opptr != t->p_pptr) {
struct proc *pp = t->p_opptr;
proc_reparent(t, pp ? pp : initproc);
@ -406,6 +407,7 @@ sys_ptrace(l, v, retval)
/* not being traced any more */
t->p_opptr = NULL;
proclist_unlock_write(s);
CLR(t->p_flag, P_TRACED|P_WAITED);
}
@ -449,11 +451,13 @@ sys_ptrace(l, v, retval)
* Stop the target.
*/
SET(t->p_flag, P_TRACED);
s = proclist_lock_write();
t->p_opptr = t->p_pptr;
if (t->p_pptr != p) {
t->p_pptr->p_flag |= P_CHTRACED;
proc_reparent(t, p);
}
proclist_unlock_write(s);
SCARG(uap, data) = SIGSTOP;
goto sendsig;