Revert "remove false BUG_ON() from run_posix_cpu_timers()"

This reverts commit 3de463c7d9d58f8cf3395268230cb20a4c15bffa.

Roland has another patch that allows us to leave the BUG_ON() in place
by just making sure that the condition it tests for really is always
true.

That goes in next.

Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 8 insertions, 0 deletions

diff --git a/kernel/exit.c b/kernel/exit.c
index 4897977a1f4b..3b25b182d2be 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -825,6 +825,14 @@ fastcall NORET_TYPE void do_exit(long code)
 
         tsk->flags |= PF_EXITING;
 
+        /*
+         * Make sure we don't try to process any timer firings
+         * while we are already exiting.
+         */
+        tsk->it_virt_expires = cputime_zero;
+        tsk->it_prof_expires = cputime_zero;
+        tsk->it_sched_expires = 0;
+
         if (unlikely(in_atomic()))
                 printk(KERN_INFO "note: %s[%d] exited with preempt_count %d\n",
                                 current->comm, current->pid,