On 03/26/2018 11:53 AM, Dave Hansen wrote: > On 03/26/2018 10:47 AM, Shuah Khan wrote: >> >> Also what happens "pkey_free() pkey-0" - can you elaborate more on that >> "silliness consequences" > > It's just what happens if you free any other pkey that is in use: it > might get reallocated later. The most likely scenario is that you will > get pkey-0 back from pkey_alloc(), you will set an access-disable or > write-disable bit in PKRU for it, and your next stack access will SIGSEGV. > Thanks. This will good information to include in the commit log. -- Shuah
