[PATCH 1/2] printk: Debug patch1

Jan Kara
2014-10-10T14:24:10Z

kernel/printk/printk.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c
index ea2d5f6962ed..a39f4129f848 100644
--- a/kernel/printk/printk.c
+++ b/kernel/printk/printk.c
@@ -1718,7 +1718,6 @@ asmlinkage int vprintk_emit(int facility, int level,

logbuf_cpu = UINT_MAX;
raw_spin_unlock(&logbuf_lock);
- lockdep_on();
local_irq_restore(flags);

/* If called from the scheduler, we can not call up(). */
@@ -1738,6 +1737,9 @@ asmlinkage int vprintk_emit(int facility, int level,
if (console_trylock_for_printk())
console_unlock();
preempt_enable();
+ local_irq_save(flags);
+ lockdep_on();
+ local_irq_restore(flags);

return printed_len;