summaryrefslogtreecommitdiff
path: root/kernel/panic.c
diff options
context:
space:
mode:
Diffstat (limited to 'kernel/panic.c')
-rw-r--r--kernel/panic.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/kernel/panic.c b/kernel/panic.c
index 04e91ff7560b..4579dbb7ed87 100644
--- a/kernel/panic.c
+++ b/kernel/panic.c
@@ -23,6 +23,7 @@
#include <linux/sysrq.h>
#include <linux/init.h>
#include <linux/nmi.h>
+#include <linux/console.h>
#define PANIC_TIMER_STEP 100
#define PANIC_BLINK_SPD 18
@@ -147,6 +148,15 @@ void panic(const char *fmt, ...)
bust_spinlocks(0);
+ /*
+ * We may have ended up stopping the CPU holding the lock (in
+ * smp_send_stop()) while still having some valuable data in the console
+ * buffer. Try to acquire the lock then release it regardless of the
+ * result. The release will also print the buffers out.
+ */
+ console_trylock();
+ console_unlock();
+
if (!panic_blink)
panic_blink = no_blink;