+ selftests-vm-pkeys-associate-key-on-a-mapped-page-and-detect-write-violation.patch added to -mm tree

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



The patch titled
     Subject: selftests/vm/pkeys: associate key on a mapped page and detect write violation
has been added to the -mm tree.  Its filename is
     selftests-vm-pkeys-associate-key-on-a-mapped-page-and-detect-write-violation.patch

This patch should soon appear at
    http://ozlabs.org/~akpm/mmots/broken-out/selftests-vm-pkeys-associate-key-on-a-mapped-page-and-detect-write-violation.patch
and later at
    http://ozlabs.org/~akpm/mmotm/broken-out/selftests-vm-pkeys-associate-key-on-a-mapped-page-and-detect-write-violation.patch

Before you just go and hit "reply", please:
   a) Consider who else should be cc'ed
   b) Prefer to cc a suitable mailing list as well
   c) Ideally: find the original patch on the mailing list and do a
      reply-to-all to that, adding suitable additional cc's

*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***

The -mm tree is included into linux-next and is updated
there every 3-4 working days

------------------------------------------------------
From: Ram Pai <linuxram@xxxxxxxxxx>
Subject: selftests/vm/pkeys: associate key on a mapped page and detect write violation

Detect write-violation on a page to which write-disabled key is associated
much after the page is mapped.

Link: http://lkml.kernel.org/r/6bfe3b3832f8bcfb07d7f2cf116b45197f4587dd.1585646528.git.sandipan@xxxxxxxxxxxxx
Signed-off-by: Ram Pai <linuxram@xxxxxxxxxx>
Acked-by: Dave Hansen <dave.hansen@xxxxxxxxx>
Signed-off-by: Sandipan Das <sandipan@xxxxxxxxxxxxx>
Cc: Dave Hansen <dave.hansen@xxxxxxxxx>
Cc: Florian Weimer <fweimer@xxxxxxxxxx>
Cc: "Desnes A. Nunes do Rosario" <desnesn@xxxxxxxxxxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Thiago Jung Bauermann <bauerman@xxxxxxxxxxxxx>
Cc: "Aneesh Kumar K.V" <aneesh.kumar@xxxxxxxxxxxxx>
Cc: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxxxx>
Cc: Michal Suchanek <msuchanek@xxxxxxx>
Cc: Shuah Khan <shuah@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---

 tools/testing/selftests/vm/protection_keys.c |   12 ++++++++++++
 1 file changed, 12 insertions(+)

--- a/tools/testing/selftests/vm/protection_keys.c~selftests-vm-pkeys-associate-key-on-a-mapped-page-and-detect-write-violation
+++ a/tools/testing/selftests/vm/protection_keys.c
@@ -1002,6 +1002,17 @@ void test_read_of_access_disabled_region
 	expected_pkey_fault(pkey);
 }
 
+void test_write_of_write_disabled_region_with_page_already_mapped(int *ptr,
+		u16 pkey)
+{
+	*ptr = __LINE__;
+	dprintf1("disabling write access; after accessing the page, "
+		"to PKEY[%02d], doing write\n", pkey);
+	pkey_write_deny(pkey);
+	*ptr = __LINE__;
+	expected_pkey_fault(pkey);
+}
+
 void test_write_of_write_disabled_region(int *ptr, u16 pkey)
 {
 	dprintf1("disabling write access to PKEY[%02d], doing write\n", pkey);
@@ -1410,6 +1421,7 @@ void (*pkey_tests[])(int *ptr, u16 pkey)
 	test_read_of_access_disabled_region,
 	test_read_of_access_disabled_region_with_page_already_mapped,
 	test_write_of_write_disabled_region,
+	test_write_of_write_disabled_region_with_page_already_mapped,
 	test_write_of_access_disabled_region,
 	test_kernel_write_of_access_disabled_region,
 	test_kernel_write_of_write_disabled_region,
_

Patches currently in -mm which might be from linuxram@xxxxxxxxxx are

selftests-x86-pkeys-move-selftests-to-arch-neutral-directory.patch
selftests-vm-pkeys-rename-all-references-to-pkru-to-a-generic-name.patch
selftests-vm-pkeys-move-generic-definitions-to-header-file.patch
selftests-vm-pkeys-fix-pkey_disable_clear.patch
selftests-vm-pkeys-fix-assertion-in-pkey_disable_set-clear.patch
selftests-vm-pkeys-fix-alloc_random_pkey-to-make-it-really-random.patch
selftests-vm-pkeys-introduce-generic-pkey-abstractions.patch
selftests-vm-pkeys-introduce-powerpc-support.patch
selftests-vm-pkeys-fix-assertion-in-test_pkey_alloc_exhaust.patch
selftests-vm-pkeys-improve-checks-to-determine-pkey-support.patch
selftests-vm-pkeys-associate-key-on-a-mapped-page-and-detect-access-violation.patch
selftests-vm-pkeys-associate-key-on-a-mapped-page-and-detect-write-violation.patch
selftests-vm-pkeys-detect-write-violation-on-a-mapped-access-denied-key-page.patch
selftests-vm-pkeys-introduce-a-sub-page-allocator.patch
selftests-vm-pkeys-test-correct-behaviour-of-pkey-0.patch
selftests-vm-pkeys-override-access-right-definitions-on-powerpc.patch




[Index of Archives]     [Kernel Archive]     [IETF Annouce]     [DCCP]     [Netdev]     [Networking]     [Security]     [Bugtraq]     [Yosemite]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Linux SCSI]

  Powered by Linux