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Clean up subthread exec

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Make sure we re-parent itimers, and use BUG_ON() instead of an explicit
conditional BUG().
This commit is contained in:
Linus Torvalds 2005-06-18 13:06:22 -07:00
parent c83d9945c0
commit c2a0f5943d
1 changed files with 6 additions and 10 deletions
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16
fs/exec.c
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@ -649,6 +649,7 @@ static inline int de_thread(struct task_struct *tsk)
}
sig->group_exit_task = NULL;
sig->notify_count = 0;
sig->real_timer.data = (unsigned long)current;
spin_unlock_irq(lock);
/*
@ -675,10 +676,8 @@ static inline int de_thread(struct task_struct *tsk)
proc_dentry2 = proc_pid_unhash(leader);
write_lock_irq(&tasklist_lock);
if (leader->tgid != current->tgid)
BUG();
if (current->pid == current->tgid)
BUG();
BUG_ON(leader->tgid != current->tgid);
BUG_ON(current->pid == current->tgid);
/*
* An exec() starts a new thread group with the
* TGID of the previous thread group. Rehash the
@ -726,8 +725,7 @@ static inline int de_thread(struct task_struct *tsk)
proc_pid_flush(proc_dentry1);
proc_pid_flush(proc_dentry2);
if (exit_state != EXIT_ZOMBIE)
BUG();
BUG_ON(exit_state != EXIT_ZOMBIE);
release_task(leader);
}
@ -772,10 +770,8 @@ static inline int de_thread(struct task_struct *tsk)
kmem_cache_free(sighand_cachep, oldsighand);
}
if (!thread_group_empty(current))
BUG();
if (!thread_group_leader(current))
BUG();
BUG_ON(!thread_group_empty(current));
BUG_ON(!thread_group_leader(current));
return 0;
}