On Thu, Apr 14, 2022 at 05:30:34PM +0200, Alexander Potapenko wrote: > On Wed, Mar 30, 2022 at 10:46 AM Peter Zijlstra <peterz@xxxxxxxxxxxxx> > wrote: > > > On Tue, Mar 29, 2022 at 02:40:07PM +0200, Alexander Potapenko wrote: > > > KMSAN inserts API function calls in a lot of places (function entries > > > and exits, local variables, memory accesses), so they may get called > > > from the uaccess regions as well. > > > > That's insufficient. Explain how you did the right thing and made these > > functions actually safe to be called in this context. > > > As a result, none of KMSAN API functions perform userspace accesses, but > since they might be called from UACCESS regions they > use user_access_save/restore(). ^ That.. very good. Thanks!
