diff options
| -rw-r--r-- | kernel/panic.c | 10 |
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; |