summaryrefslogtreecommitdiffstats
path: root/kernel/timer.c
diff options
context:
space:
mode:
Diffstat (limited to 'kernel/timer.c')
-rw-r--r--kernel/timer.c12
1 files changed, 9 insertions, 3 deletions
diff --git a/kernel/timer.c b/kernel/timer.c
index 45229694dc6a..7e12e7bc7ce6 100644
--- a/kernel/timer.c
+++ b/kernel/timer.c
@@ -982,9 +982,15 @@ static void call_timer_fn(struct timer_list *timer, void (*fn)(unsigned long),
lock_map_release(&lockdep_map);
if (preempt_count != preempt_count()) {
- printk(KERN_ERR "timer: %pF preempt leak: %08x -> %08x\n",
- fn, preempt_count, preempt_count());
- BUG();
+ WARN_ONCE(1, "timer: %pF preempt leak: %08x -> %08x\n",
+ fn, preempt_count, preempt_count());
+ /*
+ * Restore the preempt count. That gives us a decent
+ * chance to survive and extract information. If the
+ * callback kept a lock held, bad luck, but not worse
+ * than the BUG() we had.
+ */
+ preempt_count() = preempt_count;
}
}