On (23/01/16 17:35), Petr Mladek wrote: > > I am going to send a patch. Sure, sounds good. > The code might be safe with the current size of the buffer and > the string. But it is true that the following is wrong: > > len = snprintf(scratchbuf, scratchbuf_sz, > "** %lu printk messages dropped **\n", dropped); Wouldn't if (WARN_ON_ONCE(len + PRINTK_PREFIX_MAX >= outbuf_sz)) return; prevent us from doing something harmful?
