On 2020/7/13 01:47, Coly Li wrote: > For some block devices which large capacity (e.g. 8TB) but small io_opt > size (e.g. 8 sectors), in bcache_device_init() the stripes number calcu- > lated by, > DIV_ROUND_UP_ULL(sectors, d->stripe_size); > might be overflow to the unsigned int bcache_device->nr_stripes. > > This patch uses an unsigned long variable to store DIV_ROUND_UP_ULL() > and after the value is checked to be available in unsigned int range, > sets it to bache_device->nr_stripes. Then the overflow is avoided. Hi Ken, Could you please to try whether these two patches may avoid the kernel panic ? I will post the overwhelm stripe_size patch later. Thanks. Coly Li
