Ming, On 11/02/2019 01:02 AM, Ming Lei wrote: > It is reported that sysfs buffer overflow can be triggered in case > of too many CPU cores(>841 on 4K PAGE_SIZE) when showing CPUs of > hctx via/sys/block/$DEV/mq/$N/cpu_list. > > So use snprintf for avoiding the potential buffer overflow. > > This version doesn't change the attribute format, and simply stop > to show CPU number if the buffer is to be overflow. Does it make sense to also add a print or WARN_ON in case of overflow ?
