X-Git-Url: http://pileus.org/git/?a=blobdiff_plain;f=kernel%2Fexit.c;h=9d1b10ed0135139b8514f829f345c6525699db50;hb=314b6a4d80a7a5217c86ffdca926b6f406da0e0e;hp=edaa50b5bbfaecc36f1e492e28d9b80ef55b5dae;hpb=897f5ab2cd733a77a2279268262919caa8154b9d;p=~andy%2Flinux

diff --git a/kernel/exit.c b/kernel/exit.c
index edaa50b5bbf..9d1b10ed013 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -72,6 +72,11 @@ repeat:
 	BUG_ON(!list_empty(&p->ptrace_list) || !list_empty(&p->ptrace_children));
 	__exit_signal(p);
 	__exit_sighand(p);
+	/*
+	 * Note that the fastpath in sys_times depends on __exit_signal having
+	 * updated the counters before a task is removed from the tasklist of
+	 * the process by __unhash_process.
+	 */
 	__unhash_process(p);
 
 	/*
@@ -779,6 +784,8 @@ fastcall NORET_TYPE void do_exit(long code)
 
 	profile_task_exit(tsk);
 
+	WARN_ON(atomic_read(&tsk->fs_excl));
+
 	if (unlikely(in_interrupt()))
 		panic("Aiee, killing interrupt handler!");
 	if (unlikely(!tsk->pid))
@@ -793,6 +800,17 @@ fastcall NORET_TYPE void do_exit(long code)
 		ptrace_notify((PTRACE_EVENT_EXIT << 8) | SIGTRAP);
 	}
 
+	/*
+	 * We're taking recursive faults here in do_exit. Safest is to just
+	 * leave this task alone and wait for reboot.
+	 */
+	if (unlikely(tsk->flags & PF_EXITING)) {
+		printk(KERN_ALERT
+			"Fixing recursive fault but reboot is needed!\n");
+		set_current_state(TASK_UNINTERRUPTIBLE);
+		schedule();
+	}
+
 	tsk->flags |= PF_EXITING;
 
 	/*
@@ -811,10 +829,8 @@ fastcall NORET_TYPE void do_exit(long code)
 	acct_update_integrals(tsk);
 	update_mem_hiwater(tsk);
 	group_dead = atomic_dec_and_test(&tsk->signal->live);
-	if (group_dead) {
- 		del_timer_sync(&tsk->signal->real_timer);
+	if (group_dead)
 		acct_process(code);
-	}
 	exit_mm(tsk);
 
 	exit_sem(tsk);