The raid456_cpu_notify() hotplug callback lacks handling of the CPU_UP_CANCELED case. That means if CPU_UP_PREPARE fails, the scratch buffer is leaked.
Add handling for CPU_UP_CANCELED[_FROZEN] hotplug notifier transitions to free the scratch buffer. CC: Shaohua Li <[email protected]> CC: [email protected] Signed-off-by: Anna-Maria Gleixner <[email protected]> --- drivers/md/raid5.c | 2 ++ 1 file changed, 2 insertions(+) --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -6376,6 +6376,8 @@ static int raid456_cpu_notify(struct not break; case CPU_DEAD: case CPU_DEAD_FROZEN: + case CPU_UP_CANCELED: + case CPU_UP_CANCELED_FROZEN: free_scratch_buffer(conf, per_cpu_ptr(conf->percpu, cpu)); break; default:
