On Wed, Jan 27, 2016 at 1:05 PM, Eric Dumazet <eric.duma...@gmail.com> wrote: > On Wed, 2016-01-27 at 11:50 -0800, Cong Wang wrote: > >> Hmm? I think nfc_llcp_send_ui_frame() needs to do some fragmention >> with this temporary memory, or you are saying msg_iter has some >> API available to seek the pointer? Even if so, it doesn't look like >> suitable for -stable. >> > > memcpy_from_msg(msg_data, msg, len) will overwrite the msg_data with len > bytes, or return an error. > > So prior msg_data content does not matter. > > kzalloc() before a memset() or memcpy() sounds defensive programming, > kmalloc() is a bit faster.
Oh, you mean s/kzalloc/kmalloc/, I thought you mean s/kzalloc//. ;)
