On Thu 01-09-22 06:42:49, Oscar Salvador wrote: [...] > +static ssize_t read_page_owner_threshold(struct file *file, char __user *buf, > + size_t count, loff_t *pos) > +{ > + char *kbuf; > + int ret = 0; > + > + count = min_t(size_t, count, PAGE_SIZE); > + > + if (*pos >= count) > + return 0; > + > + kbuf = kmalloc(count, GFP_KERNEL); No, you do not want to trigger user defined allocation like that. I would use seq_file. -- Michal Hocko SUSE Labs