From: Dave Hansen <dave.hansen@linux.intel.com>
To: linux-kernel@vger.kernel.org
Cc: linux-mm@kvack.org, Dave Hansen <dave.hansen@linux.intel.com>,
linuxram@us.ibm.com, tglx@linutronix.de, dave.hansen@intel.com,
mpe@ellerman.id.au, mingo@kernel.org, akpm@linux-foundation.org,
shuah@kernel.org
Subject: [PATCH 11/13] x86/pkeys/selftests: Save off 'prot' for allocations
Date: Wed, 09 May 2018 10:13:54 -0700 [thread overview]
Message-ID: <20180509171354.AA23E228@viggo.jf.intel.com> (raw)
In-Reply-To: <20180509171336.76636D88@viggo.jf.intel.com>
From: Dave Hansen <dave.hansen@linux.intel.com>
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 <dave.hansen@linux.intel.com>
Cc: Ram Pai <linuxram@us.ibm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Michael Ellermen <mpe@ellerman.id.au>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Shuah Khan <shuah@kernel.org>
---
b/tools/testing/selftests/x86/protection_keys.c | 14 +++++++++-----
1 file changed, 9 insertions(+), 5 deletions(-)
diff -puN tools/testing/selftests/x86/protection_keys.c~pkeys-update-selftests-store-malloc-record tools/testing/selftests/x86/protection_keys.c
--- a/tools/testing/selftests/x86/protection_keys.c~pkeys-update-selftests-store-malloc-record 2018-05-09 09:20:23.340698395 -0700
+++ b/tools/testing/selftests/x86/protection_keys.c 2018-05-09 09:20:23.344698395 -0700
@@ -662,10 +662,12 @@ 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;
@@ -697,6 +699,8 @@ 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++;
}
@@ -741,7 +745,7 @@ 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);
@@ -762,7 +766,7 @@ 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);
@@ -835,7 +839,7 @@ 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;
@@ -857,7 +861,7 @@ 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);
_
next prev parent reply other threads:[~2018-05-09 17:19 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-09 17:13 [PATCH 00/13] [v4] x86, pkeys: two protection keys bug fixes Dave Hansen
2018-05-09 17:13 ` [PATCH 01/13] x86/pkeys/selftests: Give better unexpected fault error messages Dave Hansen
2018-05-14 12:40 ` [tip:x86/urgent] " tip-bot for Dave Hansen
2018-05-09 17:13 ` [PATCH 02/13] x86/pkeys/selftests: Stop using assert() Dave Hansen
2018-05-14 12:41 ` [tip:x86/urgent] " tip-bot for Dave Hansen
2018-05-09 17:13 ` [PATCH 03/13] x86/pkeys/selftests: Remove dead debugging code, fix dprint_in_signal Dave Hansen
2018-05-14 12:41 ` [tip:x86/urgent] " tip-bot for Dave Hansen
2018-05-09 17:13 ` [PATCH 04/13] x86/pkeys/selftests: Avoid printf-in-signal deadlocks Dave Hansen
2018-05-14 12:42 ` [tip:x86/urgent] " tip-bot for Dave Hansen
2018-05-09 17:13 ` [PATCH 05/13] x86/pkeys/selftests: Allow faults on unknown keys Dave Hansen
2018-05-14 12:42 ` [tip:x86/urgent] " tip-bot for Dave Hansen
2018-05-09 17:13 ` [PATCH 06/13] x86/pkeys/selftests: Factor out "instruction page" Dave Hansen
2018-05-14 12:43 ` [tip:x86/urgent] " tip-bot for Dave Hansen
2018-05-09 17:13 ` [PATCH 07/13] x86/pkeys/selftests: Add PROT_EXEC test Dave Hansen
2018-05-14 12:43 ` [tip:x86/urgent] " tip-bot for Dave Hansen
2018-05-09 17:13 ` [PATCH 08/13] x86/pkeys/selftests: Fix pkey exhaustion test off-by-one Dave Hansen
2018-05-14 12:44 ` [tip:x86/urgent] " tip-bot for Dave Hansen
2018-05-09 17:13 ` [PATCH 09/13] x86/pkeys: Override pkey when moving away from PROT_EXEC Dave Hansen
2018-05-14 12:44 ` [tip:x86/urgent] " tip-bot for Dave Hansen
2018-05-09 17:13 ` [PATCH 10/13] x86/pkeys/selftests: Fix pointer math Dave Hansen
2018-05-14 12:45 ` [tip:x86/urgent] " tip-bot for Dave Hansen
2018-05-09 17:13 ` Dave Hansen [this message]
2018-05-14 12:45 ` [tip:x86/urgent] x86/pkeys/selftests: Save off 'prot' for allocations tip-bot for Dave Hansen
2018-05-09 17:13 ` [PATCH 12/13] x86/pkeys/selftests: Add a test for pkey 0 Dave Hansen
2018-05-14 12:46 ` [tip:x86/urgent] " tip-bot for Dave Hansen
2018-05-09 17:13 ` [PATCH 13/13] x86/pkeys: Do not special case protection key 0 Dave Hansen
2018-05-14 12:46 ` [tip:x86/urgent] " tip-bot for Dave Hansen
2018-05-14 8:29 ` [PATCH 00/13] [v4] x86, pkeys: two protection keys bug fixes Ingo Molnar
2018-05-14 8:47 ` Ingo Molnar
2018-05-14 8:56 ` [PATCH] x86/pkeys/selftests: Adjust the self-test to fresh distros that export the pkeys ABI Ingo Molnar
2018-05-14 12:39 ` [tip:x86/urgent] " tip-bot for Ingo Molnar
2018-05-14 8:59 ` [PATCH] x86/mpx/selftests: Adjust the self-test to fresh distros that export the MPX ABI Ingo Molnar
2018-05-14 12:39 ` [tip:x86/urgent] " tip-bot for Ingo Molnar
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