[PATCH 1/2] powerpc/core-pkeys: execute-permission on keys are disabled by default
Ram Pai
linuxram at us.ibm.com
Tue Jun 26 12:16:15 AEST 2018
Only when the key is allocated, its permission are enabled.
Signed-off-by: Ram Pai <linuxram at us.ibm.com>
---
tools/testing/selftests/powerpc/ptrace/core-pkey.c | 4 ++++
1 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/tools/testing/selftests/powerpc/ptrace/core-pkey.c b/tools/testing/selftests/powerpc/ptrace/core-pkey.c
index 36bc312..b353d86 100644
--- a/tools/testing/selftests/powerpc/ptrace/core-pkey.c
+++ b/tools/testing/selftests/powerpc/ptrace/core-pkey.c
@@ -140,6 +140,10 @@ static int child(struct shared_info *info)
if (disable_execute)
info->iamr |= 1ul << pkeyshift(pkey1);
+ else
+ info->iamr &= ~(1ul << pkeyshift(pkey1));
+ info->iamr &= ~(1ul << pkeyshift(pkey2) | 1ul << pkeyshift(pkey3));
+
info->uamor |= 3ul << pkeyshift(pkey1) | 3ul << pkeyshift(pkey2);
--
1.7.1
More information about the Linuxppc-dev
mailing list