debug_locks: set oops_in_progress if we will log messages.

Otherwise lock debugging messages on runqueue locks can deadlock the system due to the wakeups performed by printk(). Signed-off-by: David S. Miller <[email protected]> Signed-off-by: Ingo Molnar <[email protected]>
josf · Aug 1, 2008 · e0fdace · e0fdace
1 parent 419ca3f
commit e0fdace
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/lib/debug_locks.c b/lib/debug_locks.c
@@ -8,6 +8,7 @@
  *
  *  Copyright (C) 2006 Red Hat, Inc., Ingo Molnar <[email protected]>
  */
+#include <linux/kernel.h>
 #include <linux/rwsem.h>
 #include <linux/mutex.h>
 #include <linux/module.h>
@@ -37,6 +38,7 @@ int debug_locks_off(void)
 {
 	if (xchg(&debug_locks, 0)) {
 		if (!debug_locks_silent) {
+			oops_in_progress = 1;
 			console_verbose();
 			return 1;
 		}