| commit | de113256f8c1c24d8c79ae388bf2a5abd70f7577 | [log] [tgz] |
|---|---|---|
| author | Ram Pai <linuxram@us.ibm.com> | Tue Jul 17 06:51:03 2018 -0700 |
| committer | Michael Ellerman <mpe@ellerman.id.au> | Tue Jul 24 21:33:41 2018 +1000 |
| tree | 1ee5ff88eddd380bd15ceaa30f41b8843a889b5b | |
| parent | a57a04c76e06822e4377831611364c846b7202ca [diff] |
powerpc/pkeys: Deny read/write/execute by default
Deny all permissions on all keys, with some exceptions. pkey-0 must
allow all permissions, or else everything comes to a screaching halt.
Execute-only key must allow execute permission.
Fixes: cf43d3b26452 ("powerpc: Enable pkey subsystem")
Cc: stable@vger.kernel.org # v4.16+
Signed-off-by: Ram Pai <linuxram@us.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>