kernel/tools/testing/selftests/powerpc/mm/pkey_exec_prot.c, branch linux-6.2.yHosts the 0x221E linux distro kernel.https://universe.0xinfinity.dev/distro/kernel/atom?h=linux-6.2.y2021-01-18T21:04:32Zselftests/powerpc: Fix exit status of pkey tests2021-01-18T21:04:32ZSandipan Dassandipan@linux.ibm.com2021-01-18T09:31:45Zurn:sha1:92a5e1fdb286851d5bd0eb966b8d075be27cf5ee
Since main() does not return a value explicitly, the
return values from FAIL_IF() conditions are ignored
and the tests can still pass irrespective of failures.
This makes sure that we always explicitly return the
correct test exit status.
Fixes: 1addb6444791 ("selftests/powerpc: Add test for execute-disabled pkeys")
Fixes: c27f2fd1705a ("selftests/powerpc: Add test for pkey siginfo verification")
Reported-by: Eirik Fuller <efuller@redhat.com>
Signed-off-by: Sandipan Das <sandipan@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210118093145.10134-1-sandipan@linux.ibm.com
selftests/powerpc: Harden test for execute-disabled pkeys2020-07-29T11:02:10ZSandipan Dassandipan@linux.ibm.com2020-07-27T04:00:37Zurn:sha1:03634bbf5d8a6f2d97e6150a1b8ff03675badac3
Commit 192b6a7805989 ("powerpc/book3s64/pkeys: Fix
pkey_access_permitted() for execute disable pkey") fixed a
bug that caused repetitive faults for pkeys with no execute
rights alongside some combination of read and write rights.
This removes the last two cases of the test, which check
the behaviour of pkeys with read, write but no execute
rights and all the rights, in favour of checking all the
possible combinations of read, write and execute rights
to be able to detect bugs like the one mentioned above.
Signed-off-by: Sandipan Das <sandipan@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/db467500f8af47727bba6b35796e8974a78b71e5.1595821792.git.sandipan@linux.ibm.com
selftests/powerpc: Add pkey helpers for rights2020-07-29T11:02:10ZSandipan Dassandipan@linux.ibm.com2020-07-27T04:00:36Zurn:sha1:264d7fccc4711328a19f07e6bd57aee4c68803aa
This adds some new pkey-related helper to print
access rights of a pkey in the "rwx" format and
to generate different valid combinations of pkey
rights starting from a given combination.
Signed-off-by: Sandipan Das <sandipan@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/6cc1c7d1f686618668a3e090f1d0c2a4cd9dea3f.1595821792.git.sandipan@linux.ibm.com
selftests/powerpc: Move pkey helpers to headers2020-07-29T11:02:10ZSandipan Dassandipan@linux.ibm.com2020-07-27T04:00:35Zurn:sha1:128d3d0210076232b7d54c361082c8ee17e4b669
This moves all the pkey-related helpers to a new header
file and also a helper to print error messages in signal
handlers to the existing utils header file.
Signed-off-by: Sandipan Das <sandipan@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/28e633fa9ec1a6500c12188e09ea1887b10a10c1.1595821792.git.sandipan@linux.ibm.com
selftests/powerpc: Add test for execute-disabled pkeys2020-06-30T04:37:54ZSandipan Dassandipan@linux.ibm.com2020-06-04T12:56:10Zurn:sha1:1addb6444791f9e87fce0eb9882ec96a4a76e615
Apart from read and write access, memory protection keys can
also be used for restricting execute permission of pages on
powerpc. This adds a test to verify if the feature works as
expected.
Signed-off-by: Sandipan Das <sandipan@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200604125610.649668-4-sandipan@linux.ibm.com