diff options
Diffstat (limited to 'kernel/exit.c')
| -rw-r--r-- | kernel/exit.c | 32 |
1 files changed, 7 insertions, 25 deletions
diff --git a/kernel/exit.c b/kernel/exit.c index 8e288e8e9ca3..052aa52de331 100644 --- a/kernel/exit.c +++ b/kernel/exit.c @@ -393,7 +393,7 @@ static void exit_mm(struct task_struct *tsk) struct core_state *core_state; int mm_released; - mm_release(tsk, mm); + exit_mm_release(tsk, mm); if (!mm) return; sync_mm_rss(mm); @@ -412,7 +412,10 @@ static void exit_mm(struct task_struct *tsk) up_read(&mm->mmap_sem); self.task = tsk; - self.next = xchg(&core_state->dumper.next, &self); + if (self.task->flags & PF_SIGNALED) + self.next = xchg(&core_state->dumper.next, &self); + else + self.task = NULL; /* * Implies mb(), the result of xchg() must be visible * to core_state->dumper. @@ -613,6 +616,7 @@ static void exit_notify(struct task_struct *tsk, int group_dead) if (group_dead) kill_orphaned_pgrp(tsk->group_leader, NULL); + tsk->exit_state = EXIT_ZOMBIE; if (unlikely(tsk->ptrace)) { int sig = thread_group_leader(tsk) && thread_group_empty(tsk) && @@ -706,16 +710,7 @@ void do_exit(long code) */ if (unlikely(tsk->flags & PF_EXITING)) { pr_alert("Fixing recursive fault but reboot is needed!\n"); - /* - * We can do this unlocked here. The futex code uses - * this flag just to verify whether the pi state - * cleanup has been done or not. In the worst case it - * loops once more. We pretend that the cleanup was - * done as there is no way to return. Either the - * OWNER_DIED bit is set by now or we push the blocked - * task into the wait for ever nirwana as well. - */ - tsk->flags |= PF_EXITPIDONE; + futex_exit_recursive(tsk); set_current_state(TASK_UNINTERRUPTIBLE); schedule(); } @@ -725,13 +720,6 @@ void do_exit(long code) sched_exit(tsk); schedtune_exit_task(tsk); - /* - * tsk->flags are checked in the futex code to protect against - * an exiting task cleaning up the robust pi futexes. - */ - smp_mb(); - raw_spin_unlock_wait(&tsk->pi_lock); - if (unlikely(in_atomic())) { pr_info("note: %s[%d] exited with preempt_count %d\n", current->comm, task_pid_nr(current), @@ -808,12 +796,6 @@ void do_exit(long code) * Make sure we are holding no locks: */ debug_check_no_locks_held(); - /* - * We can do this unlocked here. The futex code uses this flag - * just to verify whether the pi state cleanup has been done - * or not. In the worst case it loops once more. - */ - tsk->flags |= PF_EXITPIDONE; if (tsk->io_context) exit_io_context(tsk); |