From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-qt0-f199.google.com (mail-qt0-f199.google.com [209.85.216.199]) by kanga.kvack.org (Postfix) with ESMTP id BE0D0800D8 for ; Mon, 22 Jan 2018 13:53:08 -0500 (EST) Received: by mail-qt0-f199.google.com with SMTP id o22so15834595qtb.17 for ; Mon, 22 Jan 2018 10:53:08 -0800 (PST) Received: from mail-sor-f65.google.com (mail-sor-f65.google.com. [209.85.220.65]) by mx.google.com with SMTPS id p6sor10769815qtk.98.2018.01.22.10.53.08 for (Google Transport Security); Mon, 22 Jan 2018 10:53:08 -0800 (PST) From: Ram Pai Subject: [PATCH v10 07/24] selftests/vm: fixed bugs in pkey_disable_clear() Date: Mon, 22 Jan 2018 10:52:00 -0800 Message-Id: <1516647137-11174-8-git-send-email-linuxram@us.ibm.com> In-Reply-To: <1516647137-11174-1-git-send-email-linuxram@us.ibm.com> References: <1516647137-11174-1-git-send-email-linuxram@us.ibm.com> Sender: owner-linux-mm@kvack.org List-ID: To: shuahkh@osg.samsung.com, linux-kselftest@vger.kernel.org Cc: mpe@ellerman.id.au, linuxppc-dev@lists.ozlabs.org, linux-mm@kvack.org, x86@kernel.org, linux-arch@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, mingo@redhat.com, akpm@linux-foundation.org, dave.hansen@intel.com, benh@kernel.crashing.org, paulus@samba.org, khandual@linux.vnet.ibm.com, aneesh.kumar@linux.vnet.ibm.com, bsingharora@gmail.com, hbabu@us.ibm.com, mhocko@kernel.org, bauerman@linux.vnet.ibm.com, ebiederm@xmission.com, linuxram@us.ibm.com, arnd@arndb.de instead of clearing the bits, pkey_disable_clear() was setting the bits. Fixed it. Also fixed a wrong assertion in that function. When bits are cleared, the resulting bit value will be less than the original. Signed-off-by: Ram Pai --- tools/testing/selftests/vm/protection_keys.c | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/vm/protection_keys.c b/tools/testing/selftests/vm/protection_keys.c index 0109388..ca54a95 100644 --- a/tools/testing/selftests/vm/protection_keys.c +++ b/tools/testing/selftests/vm/protection_keys.c @@ -461,7 +461,7 @@ void pkey_disable_clear(int pkey, int flags) pkey, pkey, pkey_rights); pkey_assert(pkey_rights >= 0); - pkey_rights |= flags; + pkey_rights &= ~flags; ret = pkey_set(pkey, pkey_rights, 0); /* pkey_reg and flags have the same format */ @@ -475,7 +475,7 @@ void pkey_disable_clear(int pkey, int flags) dprintf1("%s(%d) pkey_reg: 0x%016lx\n", __func__, pkey, rdpkey_reg()); if (flags) - assert(rdpkey_reg() > orig_pkey_reg); + assert(rdpkey_reg() < orig_pkey_reg); } void pkey_write_allow(int pkey) -- 1.7.1 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org