diff options
Diffstat (limited to 'fs/exec.c')
| -rw-r--r-- | fs/exec.c | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/fs/exec.c b/fs/exec.c index 9824473a7ec1..4f2bebc276c5 100644 --- a/fs/exec.c +++ b/fs/exec.c @@ -603,7 +603,7 @@ static int shift_arg_pages(struct vm_area_struct *vma, unsigned long shift) * process cleanup to remove whatever mess we made. */ if (length != move_page_tables(vma, old_start, - vma, new_start, length)) + vma, new_start, length, false)) return -ENOMEM; lru_add_drain(); @@ -878,9 +878,11 @@ static int de_thread(struct task_struct *tsk) sig->notify_count--; while (sig->notify_count) { - __set_current_state(TASK_UNINTERRUPTIBLE); + __set_current_state(TASK_KILLABLE); spin_unlock_irq(lock); schedule(); + if (unlikely(__fatal_signal_pending(tsk))) + goto killed; spin_lock_irq(lock); } spin_unlock_irq(lock); @@ -898,9 +900,11 @@ static int de_thread(struct task_struct *tsk) write_lock_irq(&tasklist_lock); if (likely(leader->exit_state)) break; - __set_current_state(TASK_UNINTERRUPTIBLE); + __set_current_state(TASK_KILLABLE); write_unlock_irq(&tasklist_lock); schedule(); + if (unlikely(__fatal_signal_pending(tsk))) + goto killed; } /* @@ -994,6 +998,14 @@ no_thread_group: BUG_ON(!thread_group_leader(tsk)); return 0; + +killed: + /* protects against exit_notify() and __exit_signal() */ + read_lock(&tasklist_lock); + sig->group_exit_task = NULL; + sig->notify_count = 0; + read_unlock(&tasklist_lock); + return -EAGAIN; } char *get_task_comm(char *buf, struct task_struct *tsk) |