From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pl0-f70.google.com (mail-pl0-f70.google.com [209.85.160.70]) by kanga.kvack.org (Postfix) with ESMTP id DAD286B0266 for ; Mon, 18 Jun 2018 04:28:08 -0400 (EDT) Received: by mail-pl0-f70.google.com with SMTP id 31-v6so9783333plf.19 for ; Mon, 18 Jun 2018 01:28:08 -0700 (PDT) Received: from mail.linuxfoundation.org (mail.linuxfoundation.org. [140.211.169.12]) by mx.google.com with ESMTPS id u191-v6si11623866pgd.667.2018.06.18.01.28.07 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 18 Jun 2018 01:28:07 -0700 (PDT) From: Greg Kroah-Hartman Subject: [PATCH 4.16 246/279] x86/pkeys/selftests: Save off prot for allocations Date: Mon, 18 Jun 2018 10:13:51 +0200 Message-Id: <20180618080618.947257586@linuxfoundation.org> In-Reply-To: <20180618080608.851973560@linuxfoundation.org> References: <20180618080608.851973560@linuxfoundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: owner-linux-mm@kvack.org List-ID: To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Dave Hansen , Andrew Morton , Dave Hansen , Linus Torvalds , Michael Ellermen , Peter Zijlstra , Ram Pai , Shuah Khan , Thomas Gleixner , linux-mm@kvack.org, Ingo Molnar , Sasha Levin 4.16-stable review patch. If anyone has any objections, please let me know. ------------------ From: Dave Hansen [ Upstream commit acb25d761d6f2f64e785ccefc71e54f244f1eda4 ] This makes it possible to to tell what 'prot' a given allocation is supposed to have. That way, if we want to change just the pkey, we know what 'prot' to pass to mprotect_pkey(). Also, keep a record of the most recent allocation so the tests can easily find it. Signed-off-by: Dave Hansen Cc: Andrew Morton Cc: Dave Hansen Cc: Linus Torvalds Cc: Michael Ellermen Cc: Peter Zijlstra Cc: Ram Pai Cc: Shuah Khan Cc: Thomas Gleixner Cc: linux-mm@kvack.org Link: http://lkml.kernel.org/r/20180509171354.AA23E228@viggo.jf.intel.com Signed-off-by: Ingo Molnar Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- tools/testing/selftests/x86/protection_keys.c | 14 +++++++++----- 1 file changed, 9 insertions(+), 5 deletions(-) --- a/tools/testing/selftests/x86/protection_keys.c +++ b/tools/testing/selftests/x86/protection_keys.c @@ -677,10 +677,12 @@ int mprotect_pkey(void *ptr, size_t size struct pkey_malloc_record { void *ptr; long size; + int prot; }; struct pkey_malloc_record *pkey_malloc_records; +struct pkey_malloc_record *pkey_last_malloc_record; long nr_pkey_malloc_records; -void record_pkey_malloc(void *ptr, long size) +void record_pkey_malloc(void *ptr, long size, int prot) { long i; struct pkey_malloc_record *rec = NULL; @@ -712,6 +714,8 @@ void record_pkey_malloc(void *ptr, long (int)(rec - pkey_malloc_records), rec, ptr, size); rec->ptr = ptr; rec->size = size; + rec->prot = prot; + pkey_last_malloc_record = rec; nr_pkey_malloc_records++; } @@ -756,7 +760,7 @@ void *malloc_pkey_with_mprotect(long siz pkey_assert(ptr != (void *)-1); ret = mprotect_pkey((void *)ptr, PAGE_SIZE, prot, pkey); pkey_assert(!ret); - record_pkey_malloc(ptr, size); + record_pkey_malloc(ptr, size, prot); rdpkru(); dprintf1("%s() for pkey %d @ %p\n", __func__, pkey, ptr); @@ -777,7 +781,7 @@ void *malloc_pkey_anon_huge(long size, i size = ALIGN_UP(size, HPAGE_SIZE * 2); ptr = mmap(NULL, size, PROT_NONE, MAP_ANONYMOUS|MAP_PRIVATE, -1, 0); pkey_assert(ptr != (void *)-1); - record_pkey_malloc(ptr, size); + record_pkey_malloc(ptr, size, prot); mprotect_pkey(ptr, size, prot, pkey); dprintf1("unaligned ptr: %p\n", ptr); @@ -850,7 +854,7 @@ void *malloc_pkey_hugetlb(long size, int pkey_assert(ptr != (void *)-1); mprotect_pkey(ptr, size, prot, pkey); - record_pkey_malloc(ptr, size); + record_pkey_malloc(ptr, size, prot); dprintf1("mmap()'d hugetlbfs for pkey %d @ %p\n", pkey, ptr); return ptr; @@ -872,7 +876,7 @@ void *malloc_pkey_mmap_dax(long size, in mprotect_pkey(ptr, size, prot, pkey); - record_pkey_malloc(ptr, size); + record_pkey_malloc(ptr, size, prot); dprintf1("mmap()'d for pkey %d @ %p\n", pkey, ptr); close(fd);