On Thu, 14 Feb 2019 14:10:44 +0000 Changbin Du <changbin.du@xxxxxxxxx> wrote: > > No I didn't have the fix. I was running an older kernel actually. One > > before commit 9da3f2b74054406f87dff7101a569217ffceb29b was added. > > There's nothing actually wrong with that code, since kprobes is allowed > > to poke at anything. But that commit considers the kernel using copy > > from user to poke kernel address space is a security bug. > > > Glade to know that. And I wonder wether all such cases have been > disclosed. I noticed the uprobe code also uses some usercopy functions. Well, uprobe shouldn't be poking at kernel addresses ;-) -- Steve
