On Mon, Sep 24, 2018 at 11:41:58AM -0700, Dmitry Torokhov wrote: > > How large is the allocation? AFACIT nRequests larger than KMALLOC_MAX_SIZE > > are larger than the maximum allowed by the page allocator. Thus the warning > > and the NULL return. > > The size in this particular case is being derived from a value passed > from userspace. Input core does not care about any limits on size of > memory kmalloc() can support and is perfectly happy with getting NULL > and telling userspace to go away with their silly requests by returning > -ENOMEM. > > For the record: I definitely do not want to pre-sanitize size neither in > uinput nor in input core. Probably should be using kvzalloc then.
