Dave Hansen cc6455e97d x86/selftests/pkeys: Fork() to check for state being preserved ...

commit e1812933b1 upstream.

There was a bug where the per-mm pkey state was not being preserved across
fork() in the child.  fork() is performed in the pkey selftests, but all of
the pkey activity is performed in the parent.  The child does not perform
any actions sensitive to pkey state.

To make the test more sensitive to these kinds of bugs, add a fork() where
the parent exits, and execution continues in the child.

To achieve this let the key exhaustion test not terminate at the first
allocation failure and fork after 2*NR_PKEYS loops and continue in the
child.

Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: bp@alien8.de
Cc: hpa@zytor.com
Cc: peterz@infradead.org
Cc: mpe@ellerman.id.au
Cc: will.deacon@arm.com
Cc: luto@kernel.org
Cc: jroedel@suse.de
Cc: stable@vger.kernel.org
Cc: Borislav Petkov <bp@alien8.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Joerg Roedel <jroedel@suse.de>
Link: https://lkml.kernel.org/r/20190102215657.585704B7@viggo.jf.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2019-01-31 08:12:36 +01:00

..

breakpoints

…

capabilities

selftests/capabilities: Fix the test_execve test

2017-07-21 07:42:22 +02:00

cpu-hotplug

…

efivarfs

selftests/efivarfs: add required kernel configs

2018-10-18 09:13:19 +02:00

exec

…

filesystems

selftests: move dnotify_test from Documentation/filesystems

2016-09-20 09:09:00 -06:00

firmware

test_firmware: fix setting old custom fw path back on exit, second try

2018-05-09 09:50:22 +02:00

ftrace

selftests: ftrace: Add synthetic event syntax testcase

2018-11-13 11:16:48 -08:00

futex

selftests/futex: Check ANSI terminal color support

2016-10-11 07:38:36 -06:00

ia64

selftests: move ia64 tests from Documentation/ia64

2016-09-20 09:58:12 -06:00

intel_pstate

selftests/intel_pstate: Improve test, minor fixes

2018-08-03 07:55:15 +02:00

ipc

…

kcmp

…

lib

…

media_tests

…

membarrier

…

memfd

selftests: memfd: add config fragment for fuse

2018-05-30 07:50:27 +02:00

memory-hotplug

selftests: memory-hotplug: add required configs

2018-10-18 09:13:20 +02:00

mount

…

mqueue

…

net

bpf: do not blindly change rlimit in reuseport net selftest

2018-11-13 11:16:47 -08:00

netfilter

selftests: add script to stress-test nft packet path vs. control plane

2018-12-17 09:38:32 +01:00

networking/timestamping

selftests: Move networking/timestamping from Documentation

2016-09-20 09:59:50 -06:00

nsfs

tools/testing: add a test to check nsfs ioctl-s

2016-09-22 19:59:41 -05:00

ntb

ntb: ntb_test: ensure the link is up before trying to configure the mws

2017-08-30 10:21:55 +02:00

powerpc

powerpc/selftests: Wait all threads to join

2018-11-21 09:25:57 +01:00

prctl

selftests: move prctl tests from Documentation/prctl

2016-09-20 09:09:09 -06:00

pstore

selftests: pstore: return Kselftest Skip code for skipped tests

2018-08-24 13:12:27 +02:00

ptp

selftests: move ptp tests from Documentation/ptp

2016-09-20 09:54:38 -06:00

ptrace

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rcutorture

rcutorture/configinit: Fix build directory error message

2018-03-22 09:17:58 +01:00

seccomp

seccomp: Add filter flag to opt-out of SSB mitigation

2018-05-22 16:58:01 +02:00

sigaltstack

…

size

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static_keys

selftests: static_keys: return Kselftest Skip code for skipped tests

2018-08-24 13:12:27 +02:00

sync

selftests: sync: add config fragment for testing sync framework

2018-08-24 13:12:27 +02:00

sysctl

…

timers

selftest: timers: Tweak raw_skew to SKIP when ADJ_OFFSET/other clock adjustments are in progress

2018-09-26 08:36:39 +02:00

user

selftests: user: return Kselftest Skip code for skipped tests

2018-08-24 13:12:27 +02:00

vDSO

selftests: move vDSO tests from Documentation/vDSO

2016-09-20 09:58:04 -06:00

vm

kselftest: fix OOM in memory compaction test

2018-02-22 15:43:52 +01:00

watchdog

selftests: move watchdog tests from Documentation/watchdog

2016-09-20 09:58:34 -06:00

x86

x86/selftests/pkeys: Fork() to check for state being preserved

2019-01-31 08:12:36 +01:00

zram

selftests: zram: return Kselftest Skip code for skipped tests

2018-08-24 13:12:27 +02:00

gen_kselftest_tar.sh

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kselftest_install.sh

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kselftest.h

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lib.mk

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Makefile

selftests: add script to stress-test nft packet path vs. control plane

2018-12-17 09:38:32 +01:00