On Fri, May 10, 2019 at 12:24:01PM -0400, Steven Rostedt wrote: > On Fri, 10 May 2019 10:42:13 +0200 > Petr Mladek <pmladek@xxxxxxxx> wrote: > > > static const char *check_pointer_msg(const void *ptr) > > { > > - char byte; > > - > > if (!ptr) > > return "(null)"; > > > > - if (probe_kernel_address(ptr, byte)) > > + if ((unsigned long)ptr < PAGE_SIZE || IS_ERR_VALUE(ptr)) > > return "(efault)"; > > > > > < PAGE_SIZE ? > > do you mean: < TASK_SIZE ? Original code used PAGE_SIZE. If it needs to be changed, that it might be a separate explanation / patch. -- With Best Regards, Andy Shevchenko