diff options
| author | Andrew Morton <akpm@digeo.com> | 2003-05-12 09:12:34 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@home.transmeta.com> | 2003-05-12 09:12:34 -0700 |
| commit | 172edfcb3102374aef9b7730aba42865fee1b644 (patch) | |
| tree | 79629528215881c45f9719bd8b2d9588706ae321 /kernel | |
| parent | 7953a508f3c00555b6f296c3e5bf68914b82b87b (diff) | |
[PATCH] de_thread memory corruption fix
From: Manfred Spraul <manfred@colorfullife.com>
de_thread calls list_del(¤t->tasks), but current->tasks was never
added to the task list. The structure contains stale values from the parent.
switch_exec_pid() transforms a normal thread to a thread group leader.
Thread group leaders are included in the init_task.tasks linked list,
non-leaders are not in that list. The patch adds the new thread group
leader to the linked list, otherwise de_thread corrupts the task list.
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/pid.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/pid.c b/kernel/pid.c index f5afb3137e74..00413e3967b9 100644 --- a/kernel/pid.c +++ b/kernel/pid.c @@ -252,6 +252,7 @@ void switch_exec_pids(task_t *leader, task_t *thread) attach_pid(thread, PIDTYPE_TGID, thread->tgid); attach_pid(thread, PIDTYPE_PGID, thread->pgrp); attach_pid(thread, PIDTYPE_SID, thread->session); + list_add_tail(&thread->tasks, &init_task.tasks); attach_pid(leader, PIDTYPE_PID, leader->pid); attach_pid(leader, PIDTYPE_TGID, leader->tgid); |