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When process exists, not only the children shall be reparented to

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init, but also the orphans shall be removed from the orphan list,
because the list header is destroyed.

Reported and tested by:	pho
MFC after:	3 days
This commit is contained in:
Konstantin Belousov 2012-04-02 19:35:36 +00:00
parent 2e39e24f64
commit 5085ecb75a
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=233809
1 changed files with 16 additions and 0 deletions
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16
sys/kern/kern_exit.c
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@ -430,6 +430,13 @@ exit1(struct thread *td, int rv)
if (q->p_flag & P_TRACED) {
struct thread *temp;
/*
* Since q was found on our children list, the
* proc_reparent() call moved q to the orphan
* list due to present P_TRACED flag. Clear
* orphan link for q now while q is locked.
*/
clear_orphan(q);
q->p_flag &= ~(P_TRACED | P_STOPPED_TRACE);
FOREACH_THREAD_IN_PROC(q, temp)
temp->td_dbgflags &= ~TDB_SUSPEND;
@ -438,6 +445,15 @@ exit1(struct thread *td, int rv)
PROC_UNLOCK(q);
}
/*
* Also get rid of our orphans.
*/
while ((q = LIST_FIRST(&p->p_orphans)) != NULL) {
PROC_LOCK(q);
clear_orphan(q);
PROC_UNLOCK(q);
}
/* Save exit status. */
PROC_LOCK(p);
p->p_xthread = td;