Commit Graph

304 Commits

Author SHA1 Message Date
John Stultz
1c0a7498c7 kselftest/timers: Set default threadtest values to simplify execution scripts
In order to keep the kselftest Makefiles simpler, set the threadtest
default values to the ones used in standard run_tests

Cc: Shuah Khan <shuahkh@osg.samsung.com>
Cc: Prarit Bhargava <prarit@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2015-03-19 12:03:34 -06:00
Michael Ellerman
32dcfba6f8 selftests: Add install target
This adds make install support to selftests. The basic usage is:

$ cd tools/testing/selftests
$ make install

That installs into tools/testing/selftests/install, which can then be
copied where ever necessary.

The install destination is also configurable using eg:

$ INSTALL_PATH=/mnt/selftests make install

The implementation uses two targets in the child makefiles. The first
"install" is expected to install all files into $(INSTALL_PATH).

The second, "emit_tests", is expected to emit the test instructions (ie.
bash script) on stdout. Separating this from install means the child
makefiles need no knowledge of the location of the test script.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2015-03-13 15:21:56 -06:00
Michael Ellerman
5e29a9105b selftests: Introduce minimal shared logic for running tests
This adds a Make include file which most selftests can then include to
get the run_tests logic.

On its own this has the advantage of some reduction in repetition, and
also means the pass/fail message is defined in fewer places.

However the key advantage is it will allow us to implement install very
simply in a subsequent patch.

The default implementation just executes each program in $(TEST_PROGS).

We use a variable to hold the default implementation of $(RUN_TESTS)
because that gives us a clean way to override it if necessary, ie. using
override. The mount, memory-hotplug and mqueue tests use that to provide
a different implementation.

Tests are not run via /bin/bash, so if they are scripts they must be
executable, we add a+x to several.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2015-03-13 15:13:40 -06:00
John Stultz
0d02a753a5 selftests/timers: Add set-2038 test from timetest suite
Adds the set-2038 test which sets the time to near-edge cases
like the start and end of the 32 bit epoch and checks that
time behaves properly. There is also a dangerous mode, which
lets the clock roll over past 2038 on 32bit systems, which
on some older kernels will cause system hangs.

Cc: Shuah Khan <shuahkh@osg.samsung.com>
Cc: Prarit Bhargava <prarit@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Tested-by: Prarit Bhargava <prarit@redhat.com>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2015-03-12 13:22:16 -06:00
John Stultz
3a92a15fba selftests/timers: Add set-tai from the timetest suite
This patch adds the set-tai test which ensures the tai offset
can be set properly from adjtimex.

Cc: Shuah Khan <shuahkh@osg.samsung.com>
Cc: Prarit Bhargava <prarit@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Tested-by: Prarit Bhargava <prarit@redhat.com>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2015-03-12 13:22:16 -06:00
John Stultz
d7b2902c15 selftests/timers: Add leapcrash test from the timetest suite
This change adds the leapcrash test which tests to see if a
leapsecond deadlock which was observed from 2.6.26 to 3.3
is present on this system.

Cc: Shuah Khan <shuahkh@osg.samsung.com>
Cc: Prarit Bhargava <prarit@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Tested-by: Prarit Bhargava <prarit@redhat.com>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2015-03-12 13:22:16 -06:00
John Stultz
5bccfe4153 selftests/timers: Add leap-a-day test from timetest suite
This change adds the leap-a-day test which sets STA_INS and
STA_DEL each day to trigger leapseconds each day. It also
has a mode to jump the time to right before the end of the
day each iteration.

Cc: Shuah Khan <shuahkh@osg.samsung.com>
Cc: Prarit Bhargava <prarit@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Tested-by: Prarit Bhargava <prarit@redhat.com>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2015-03-12 13:22:16 -06:00
John Stultz
7290ce1423 selftests/timers: Add clocksource-switch test from timetest suite
Adds the clocksource-switch tests which continually switches the
current clocksource between all the available ones, watching for
any timekeeping inconsistencies.

Cc: Shuah Khan <shuahkh@osg.samsung.com>
Cc: Prarit Bhargava <prarit@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Tested-by: Prarit Bhargava <prarit@redhat.com>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2015-03-12 13:22:15 -06:00
John Stultz
6e8b285bcd selftests/timers: Add skew_consistency test from the timetests suite
This change adds the skew_consistency test, which twists the
ADJ_FREQUENCY knob back and forth and watches for timekeeping
inconsistencies.

Cc: Shuah Khan <shuahkh@osg.samsung.com>
Cc: Prarit Bhargava <prarit@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Tested-by: Prarit Bhargava <prarit@redhat.com>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2015-03-12 13:22:15 -06:00
John Stultz
d869424558 selftests/timers: Add change_skew test from timetest suite
This patch adds the change_skew test which validates the
adjtimex freq can be set to various values and then using
the inconsistency-check, raw_skew, and nanosleep tests
ensures time behaves properly.

Cc: Shuah Khan <shuahkh@osg.samsung.com>
Cc: Prarit Bhargava <prarit@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Tested-by: Prarit Bhargava <prarit@redhat.com>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2015-03-12 13:22:15 -06:00
John Stultz
b7bb8442fa selftests/timers: Add alarmtimer-suspend test from timetests suite
This adds the alarmtimer-suspend test from the timetests suite,
which tests that the alarmtimers wake the system up from suspend
shortly after the time they were set to fire.

Cc: Shuah Khan <shuahkh@osg.samsung.com>
Cc: Prarit Bhargava <prarit@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Tested-by: Prarit Bhargava <prarit@redhat.com>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2015-03-12 13:22:14 -06:00
John Stultz
de52133f18 selftests/timers: Add adjtimex validation test from timetest suite
This adds a adjtimex validation test which checks the behavior
for a set of valida and invalid inputs. So far this only tests
ADJ_FREQUENCY, but hopefully will grow.

Cc: Shuah Khan <shuahkh@osg.samsung.com>
Cc: Prarit Bhargava <prarit@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Tested-by: Prarit Bhargava <prarit@redhat.com>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2015-03-12 13:22:14 -06:00
John Stultz
274d631e48 selftests/timers: Add mqueue latency test from the timetest suite
Add test to validate mqueue timeout latency from the timetest suite

Cc: Shuah Khan <shuahkh@osg.samsung.com>
Cc: Prarit Bhargava <prarit@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Tested-by: Prarit Bhargava <prarit@redhat.com>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2015-03-12 13:22:14 -06:00
John Stultz
e39b60f37e selftests/timers: Add threaded time inconsistency test from timetest suite
Add the threaded time inconsistency test from the timetest suite.
This checks for time inconsistencies between cpus, usually associated
with clock skew as sometimes found w/ TSCs.

Cc: Shuah Khan <shuahkh@osg.samsung.com>
Cc: Prarit Bhargava <prarit@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Tested-by: Prarit Bhargava <prarit@redhat.com>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2015-03-12 13:22:14 -06:00
John Stultz
4e40d0a22e selftests/timers: Add set-timer-lat test from timetest suite
Add my set-timer-lat test from the timetest suite. This
test checks the latency from set_timer and reports if
any are unreasonable (>40ms).

Cc: Shuah Khan <shuahkh@osg.samsung.com>
Cc: Prarit Bhargava <prarit@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Tested-by: Prarit Bhargava <prarit@redhat.com>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2015-03-12 13:22:14 -06:00
John Stultz
51f91cbdf5 selftests/timers: Add clock skew estimation test from timetest suite
This adds my clock skew estimation test from the timetest suite.
It measures the drift between CLOCK_MONOTONIC and CLOCK_MONOTONIC_RAW
and compares it with the current frequency value from adjtimex.

It sometimes can trigger false failures when ntpd isn't in a
steady state, but its a useful too when doing adjtimex testing.

Cc: Shuah Khan <shuahkh@osg.samsung.com>
Cc: Prarit Bhargava <prarit@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Tested-by: Prarit Bhargava <prarit@redhat.com>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2015-03-12 13:22:13 -06:00
John Stultz
c5fffcb2bd selftests/timers: Add nsleep-lat test from timetest suite
Adds my nanosleep latency test from the timetest suite.
This checks to make sure we don't see "unreasonable"
latencies (> 40ms) when calling nanosleep.

Cc: Shuah Khan <shuahkh@osg.samsung.com>
Cc: Prarit Bhargava <prarit@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Tested-by: Prarit Bhargava <prarit@redhat.com>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2015-03-12 13:22:13 -06:00
John Stultz
ed3fe34a2a selftests/timers: Add inconsistency-check test from timetests
This adds my inconsistency-test from my timetests suite,
which checks for (single threaded) time inconsistencies
across the various clockids.

Cc: Shuah Khan <shuahkh@osg.samsung.com>
Cc: Prarit Bhargava <prarit@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Tested-by: Prarit Bhargava <prarit@redhat.com>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2015-03-12 13:22:13 -06:00
John Stultz
689f32fbb8 selftests/timers: Add nanosleep test from timetest suite
Add my basic nanosleep test from my timetest suite.
This test validates that nanosleep doesn't return early
against a number of clockids.

Cc: Shuah Khan <shuahkh@osg.samsung.com>
Cc: Prarit Bhargava <prarit@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Tested-by: Prarit Bhargava <prarit@redhat.com>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2015-03-12 13:22:13 -06:00
John Stultz
2430ec652d selftests/timers: Quiet warning due to lack of return check on brk
The posix_timers.c test has a loop that tries to keep it in
kernel space, repeatedly calling brk(). However, it doesn't
check the return value, which causes warnings.

This patch adds a err value which captures the return value
and modifies the test so it will quit if a failure occurs.

Cc: Shuah Khan <shuahkh@osg.samsung.com>
Cc: Prarit Bhargava <prarit@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Tested-by: Prarit Bhargava <prarit@redhat.com>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2015-03-12 13:22:12 -06:00
John Stultz
03438212d0 selftests/timers: Cleanup Makefile to make it easier to add future tests
Try to streamline the makefile so its easier to add timer/timekeeping
tests.

Also adds support for the CROSS_COMPILE variable.

Cc: Shuah Khan <shuahkh@osg.samsung.com>
Cc: Prarit Bhargava <prarit@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Tested-by: Prarit Bhargava <prarit@redhat.com>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2015-03-12 13:22:12 -06:00
Linus Torvalds
d3f180ea1a powerpc updates for 3.20
Including:
 
 - Update of all defconfigs
 - Addition of a bunch of config options to modernise our defconfigs
 - Some PS3 updates from Geoff
 - Optimised memcmp for 64 bit from Anton
 - Fix for kprobes that allows 'perf probe' to work from Naveen
 - Several cxl updates from Ian & Ryan
 - Expanded support for the '24x7' PMU from Cody & Sukadev
 - Freescale updates from Scott:
   "Highlights include 8xx optimizations, some more work on datapath device
    tree content, e300 machine check support, t1040 corenet error reporting,
    and various cleanups and fixes."
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Merge tag 'powerpc-3.20-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux

Pull powerpc updates from Michael Ellerman:

 - Update of all defconfigs

 - Addition of a bunch of config options to modernise our defconfigs

 - Some PS3 updates from Geoff

 - Optimised memcmp for 64 bit from Anton

 - Fix for kprobes that allows 'perf probe' to work from Naveen

 - Several cxl updates from Ian & Ryan

 - Expanded support for the '24x7' PMU from Cody & Sukadev

 - Freescale updates from Scott:
    "Highlights include 8xx optimizations, some more work on datapath
     device tree content, e300 machine check support, t1040 corenet
     error reporting, and various cleanups and fixes"

* tag 'powerpc-3.20-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux: (102 commits)
  cxl: Add missing return statement after handling AFU errror
  cxl: Fail AFU initialisation if an invalid configuration record is found
  cxl: Export optional AFU configuration record in sysfs
  powerpc/mm: Warn on flushing tlb page in kernel context
  powerpc/powernv: Add OPAL soft-poweroff routine
  powerpc/perf/hv-24x7: Document sysfs event description entries
  powerpc/perf/hv-gpci: add the remaining gpci requests
  powerpc/perf/{hv-gpci, hv-common}: generate requests with counters annotated
  powerpc/perf/hv-24x7: parse catalog and populate sysfs with events
  perf: define EVENT_DEFINE_RANGE_FORMAT_LITE helper
  perf: add PMU_EVENT_ATTR_STRING() helper
  perf: provide sysfs_show for struct perf_pmu_events_attr
  powerpc/kernel: Avoid initializing device-tree pointer twice
  powerpc: Remove old compile time disabled syscall tracing code
  powerpc/kernel: Make syscall_exit a local label
  cxl: Fix device_node reference counting
  powerpc/mm: bail out early when flushing TLB page
  powerpc: defconfigs: add MTD_SPI_NOR (new dependency for M25P80)
  perf/powerpc: reset event hw state when adding it to the PMU
  powerpc/qe: Use strlcpy()
  ...
2015-02-11 18:15:38 -08:00
Anton Blanchard
521adf5357 selftests/powerpc: Add memcmp testcase
Add a testcase for the new ppc64 memcmp.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2015-01-23 16:44:23 +11:00
Paul Mackerras
3776c20967 selftests/powerpc: Add subpage protection self test.
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>

mpe: Fix compile errors and formatting. Add tempfile logic to Makefile.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2015-01-23 14:02:49 +11:00
Anshuman Khandual
b64eedb88b selftests/powerpc: Make git ignore all binaries in powerpc test suite
This patch includes all of the powerpc test binaries into the .gitignore
file listing in their respective directories. This will make sure that
git ignores all of these test binaries when displaying status.

Signed-off-by: Anshuman Khandual <khandual@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2015-01-23 14:02:49 +11:00
Ingo Molnar
f49028292c Merge branch 'for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu
Pull RCU updates from Paul E. McKenney:

  - Documentation updates.

  - Miscellaneous fixes.

  - Preemptible-RCU fixes, including fixing an old bug in the
    interaction of RCU priority boosting and CPU hotplug.

  - SRCU updates.

  - RCU CPU stall-warning updates.

  - RCU torture-test updates.

Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-01-21 06:12:21 +01:00
Paul E. McKenney
78e691f4ae Merge branches 'doc.2015.01.07a', 'fixes.2015.01.15a', 'preempt.2015.01.06a', 'srcu.2015.01.06a', 'stall.2015.01.16a' and 'torture.2015.01.11a' into HEAD
doc.2015.01.07a: Documentation updates.
fixes.2015.01.15a: Miscellaneous fixes.
preempt.2015.01.06a: Changes to handling of lists of preempted tasks.
srcu.2015.01.06a: SRCU updates.
stall.2015.01.16a: RCU CPU stall-warning updates and fixes.
torture.2015.01.11a: RCU torture-test updates and fixes.
2015-01-15 23:34:34 -08:00
Paul E. McKenney
d2f74b5b48 torture: Flag console.log file to prevent holdovers from earlier runs
A system misconfiguration that prevents qemu from running at all (for
example, a missing dynamically linked library) will keep the console.log
file from the previous run.  This can fool the developer into thinking
that this failed run actually completed correctly.  This commit therefore
overwrites the console.log file just before launching qemu.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
2015-01-10 19:08:05 -08:00
Paul E. McKenney
16c77ea7d0 torture: Add "-enable-kvm -soundhw pcspk" to qemu command line
More recent qemu implementations really want "-enable-kvm", and the
"-soundhw pcspk" makes the script a bit less dependent on odd audio
libraries being installed.  This commit therefore adds both to the
default qemu command line.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
2015-01-10 19:08:04 -08:00
Paul E. McKenney
94162c8daa rcutorture: Handle different mpstat versions
The mpstat command recently added the %gnice column, which messes up
the cpu2use.sh script's idle-CPU calculations.  This commit therefore
uses $NF instead of $12 to select the last (%idle) column.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
2015-01-10 19:08:03 -08:00
Paul E. McKenney
3b009c0ebe rcutorture: Make build-output parsing correctly flag RCU's warnings
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
2015-01-10 19:07:57 -08:00
Paul E. McKenney
79619cf515 rcutorture: Issue warnings on close calls due to Reader Batch blows
Normal rcutorture checking overestimates grace periods somewhat due to
the fact that there is a delay from a grace-period request until the
start of the corresponding grace period and another delay from the end
of that grace period to notification of the requestor.  This means that
rcutorture's detection of RCU bugs is less sensitive than it might be.

It turns out that rcutorture also checks the underlying grace-period
"completed" counter (displayed in Reader Batch output), which in theory
allows rcutorture to do exact checks.  In practice, memory misordering
(by both compiler and CPU) can result in false positives.  However,
experience on x86 shows that these false positives are quite rare,
occurring less than one time per 1,000 hours of testing.  This commit
therefore does the exact checking, giving a warning if any Reader Batch
blows happen, and flagging an error if they happen more often than
once every three hours in long tests.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
2015-01-10 19:07:46 -08:00
Andrey Skvortsov
f5db310d77 selftests/vm: fix link error for transhuge-stress test
add -lrt to fix undefined reference to `clock_gettime'
error seen when the test is compiled using gcc 4.6.4.

Signed-off-by: Andrey Skvortsov <andrej.skvortzov@gmail.com>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2015-01-08 09:01:00 -07:00
dann frazier
13e634de09 tools: testing: selftests: mq_perf_tests: Fix infinite loop on ARM
We can't use a char type to check for a negative return value since char
isn't guaranteed to be signed. Indeed, the char type tends to be unsigned on
ARM.

Signed-off-by: dann frazier <dann.frazier@canonical.com>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2015-01-06 12:55:21 -07:00
David Drysdale
cd805f3676 selftests/exec: allow shell return code of 126
When the shell fails to invoke a script because its path name
is too long (ENAMETOOLONG), most shells return 127 to indicate
command not found.  However, some systems report 126 (which POSIX
suggests should indicate a non-executable file) for this case,
so allow that too.

Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: David Drysdale <drysdale@google.com>
Tested-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2015-01-06 12:54:54 -07:00
Paul E. McKenney
e9408e4f27 rcutorture: Add checks for stall ending before dump start
The current rcutorture scripting checks for actual stalls (via the "Call
Trace:" check), but fails to spot the case where a stall ends just as it
is being detected.  This commit therefore adds a check for this case.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
2015-01-06 11:05:24 -08:00
Geert Uytterhoeven
6898b627aa selftests/exec: Use %zu to format size_t
On 32-bit:

execveat.c: In function 'check_execveat_pathmax':
execveat.c:183: warning: format '%lu' expects type 'long unsigned int', but argument 3 has type 'size_t'
execveat.c:187: warning: format '%lu' expects type 'long unsigned int', but argument 2 has type 'size_t'

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2014-12-22 11:11:36 -07:00
Andrew Morton
96e869d857 tools/testing/selftests/Makefile: alphasort the TARGETS list
This list is supposed to be sorted, to reduce patch collisions.

Cc: Shuah Khan <shuah.kh@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-12-18 19:08:11 -08:00
Linus Torvalds
87c31b39ab Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
Pull user namespace related fixes from Eric Biederman:
 "As these are bug fixes almost all of thes changes are marked for
  backporting to stable.

  The first change (implicitly adding MNT_NODEV on remount) addresses a
  regression that was created when security issues with unprivileged
  remount were closed.  I go on to update the remount test to make it
  easy to detect if this issue reoccurs.

  Then there are a handful of mount and umount related fixes.

  Then half of the changes deal with the a recently discovered design
  bug in the permission checks of gid_map.  Unix since the beginning has
  allowed setting group permissions on files to less than the user and
  other permissions (aka ---rwx---rwx).  As the unix permission checks
  stop as soon as a group matches, and setgroups allows setting groups
  that can not later be dropped, results in a situtation where it is
  possible to legitimately use a group to assign fewer privileges to a
  process.  Which means dropping a group can increase a processes
  privileges.

  The fix I have adopted is that gid_map is now no longer writable
  without privilege unless the new file /proc/self/setgroups has been
  set to permanently disable setgroups.

  The bulk of user namespace using applications even the applications
  using applications using user namespaces without privilege remain
  unaffected by this change.  Unfortunately this ix breaks a couple user
  space applications, that were relying on the problematic behavior (one
  of which was tools/selftests/mount/unprivileged-remount-test.c).

  To hopefully prevent needing a regression fix on top of my security
  fix I rounded folks who work with the container implementations mostly
  like to be affected and encouraged them to test the changes.

    > So far nothing broke on my libvirt-lxc test bed. :-)
    > Tested with openSUSE 13.2 and libvirt 1.2.9.
    > Tested-by: Richard Weinberger <richard@nod.at>

    > Tested on Fedora20 with libvirt 1.2.11, works fine.
    > Tested-by: Chen Hanxiao <chenhanxiao@cn.fujitsu.com>

    > Ok, thanks - yes, unprivileged lxc is working fine with your kernels.
    > Just to be sure I was testing the right thing I also tested using
    > my unprivileged nsexec testcases, and they failed on setgroup/setgid
    > as now expected, and succeeded there without your patches.
    > Tested-by: Serge Hallyn <serge.hallyn@ubuntu.com>

    > I tested this with Sandstorm.  It breaks as is and it works if I add
    > the setgroups thing.
    > Tested-by: Andy Lutomirski <luto@amacapital.net> # breaks things as designed :("

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace:
  userns: Unbreak the unprivileged remount tests
  userns; Correct the comment in map_write
  userns: Allow setting gid_maps without privilege when setgroups is disabled
  userns: Add a knob to disable setgroups on a per user namespace basis
  userns: Rename id_map_mutex to userns_state_mutex
  userns: Only allow the creator of the userns unprivileged mappings
  userns: Check euid no fsuid when establishing an unprivileged uid mapping
  userns: Don't allow unprivileged creation of gid mappings
  userns: Don't allow setgroups until a gid mapping has been setablished
  userns: Document what the invariant required for safe unprivileged mappings.
  groups: Consolidate the setgroups permission checks
  mnt: Clear mnt_expire during pivot_root
  mnt: Carefully set CL_UNPRIVILEGED in clone_mnt
  mnt: Move the clear of MNT_LOCKED from copy_tree to it's callers.
  umount: Do not allow unmounting rootfs.
  umount: Disallow unprivileged mount force
  mnt: Update unprivileged remount test
  mnt: Implicitly add MNT_NODEV on remount when it was implicitly added by mount
2014-12-17 12:31:40 -08:00
Linus Torvalds
61de8e5364 kselftest updates for 3.19-rc1
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Merge tag 'linux-kselftest-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest

Pull kselftest update from Shuah Khan:
 "kselftest updates for 3.19-rc1:

   - kcmp test include file cleanup
   - kcmp change to build on all architectures
   - A light weight kselftest framework that provides a set of
     interfaces for tests to use to report results.  In addition,
     several tests are updated to use the framework.
   - A new runtime system size test that prints the amount of RAM that
     the currently running system is using"

* tag 'linux-kselftest-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  selftest: size: Add size test for Linux kernel
  selftests/kcmp: Always try to build the test
  selftests/kcmp: Don't include kernel headers
  kcmp: Move kcmp.h into uapi
  selftests/timers: change test to use ksft framework
  selftests/kcmp: change test to use ksft framework
  selftests/ipc: change test to use ksft framework
  selftests/breakpoints: change test to use ksft framework
  selftests: add kselftest framework for uniform test reporting
  selftests/user: move test out of Makefile into a shell script
  selftests/net: move test out of Makefile into a shell script
2014-12-16 13:15:12 -08:00
Linus Torvalds
78a45c6f06 Merge branch 'akpm' (second patch-bomb from Andrew)
Merge second patchbomb from Andrew Morton:
 - the rest of MM
 - misc fs fixes
 - add execveat() syscall
 - new ratelimit feature for fault-injection
 - decompressor updates
 - ipc/ updates
 - fallocate feature creep
 - fsnotify cleanups
 - a few other misc things

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (99 commits)
  cgroups: Documentation: fix trivial typos and wrong paragraph numberings
  parisc: percpu: update comments referring to __get_cpu_var
  percpu: update local_ops.txt to reflect this_cpu operations
  percpu: remove __get_cpu_var and __raw_get_cpu_var macros
  fsnotify: remove destroy_list from fsnotify_mark
  fsnotify: unify inode and mount marks handling
  fallocate: create FAN_MODIFY and IN_MODIFY events
  mm/cma: make kmemleak ignore CMA regions
  slub: fix cpuset check in get_any_partial
  slab: fix cpuset check in fallback_alloc
  shmdt: use i_size_read() instead of ->i_size
  ipc/shm.c: fix overly aggressive shmdt() when calls span multiple segments
  ipc/msg: increase MSGMNI, remove scaling
  ipc/sem.c: increase SEMMSL, SEMMNI, SEMOPM
  ipc/sem.c: change memory barrier in sem_lock() to smp_rmb()
  lib/decompress.c: consistency of compress formats for kernel image
  decompress_bunzip2: off by one in get_next_block()
  usr/Kconfig: make initrd compression algorithm selection not expert
  fault-inject: add ratelimit option
  ratelimit: add initialization macro
  ...
2014-12-13 13:00:36 -08:00
David Drysdale
c9b26b81af syscalls: add selftest for execveat(2)
Signed-off-by: David Drysdale <drysdale@google.com>
Cc: Meredydd Luff <meredydd@senatehouse.org>
Cc: Shuah Khan <shuah.kh@samsung.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Rich Felker <dalias@aerifal.cx>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Michael Kerrisk <mtk.manpages@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-12-13 12:42:51 -08:00
Linus Torvalds
823e334ecd Docs changes for the 3.19 merge window
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Merge tag 'docs-for-linus' of git://git.lwn.net/linux-2.6

Pull documentation update from Jonathan Corbet:
 "Here's my set of accumulated documentation changes for 3.19.

  It includes a couple of additions to the coding style document, some
  fixes for minor build problems within the documentation tree, the
  relocation of the kselftest docs, and various tweaks and additions.

  A couple of changes reach outside of Documentation/; they only make
  trivial comment changes and I did my best to get the required acks.

  Complete with a shiny signed tag this time around"

* tag 'docs-for-linus' of git://git.lwn.net/linux-2.6:
  kobject: grammar fix
  Input: xpad - update docs to reflect current state
  Documentation: Build mic/mpssd only for x86_64
  cgroups: Documentation: fix wrong cgroupfs paths
  Documentation/email-clients.txt: add info about Claws Mail
  CodingStyle: add some more error handling guidelines
  kselftest: Move the docs to the Documentation dir
  Documentation: fix formatting to make 's' happy
  Documentation: power: Fix typo in Documentation/power
  Documentation: vm: Add 1GB large page support information
  ipv4: add kernel parameter tcpmhash_entries
  Documentation: Fix a typo in mailbox.txt
  treewide: Fix typo in Documentation/DocBook/device-drivers
  CodingStyle: Add a chapter on conditional compilation
2014-12-12 14:42:48 -08:00
Eric W. Biederman
db86da7cb7 userns: Unbreak the unprivileged remount tests
A security fix in caused the way the unprivileged remount tests were
using user namespaces to break.  Tweak the way user namespaces are
being used so the test works again.

Cc: stable@vger.kernel.org
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
2014-12-11 18:07:07 -06:00
Linus Torvalds
c32809521d Updates for the ftrace self tests:
o Added kprobes on ftrace testcase
  o Sort test cases
  o Add file to hold helper functions
  o Use logfile name supported by busybox's mktemp
  o Clear trace buffer after running kprobe test
  o Fix show descriptions when run on dash shell
  o Add --verbose option for showing echo output
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Merge tag 'ftracetest-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

Pull ftrace self-test updates from Steven Rostedt:
 "Updates for the ftrace self tests:

   - Added kprobes on ftrace testcase
   - Sort test cases
   - Add file to hold helper functions
   - Use logfile name supported by busybox's mktemp
   - Clear trace buffer after running kprobe test
   - Fix show descriptions when run on dash shell
   - Add --verbose option for showing echo output"

* tag 'ftracetest-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  ftracetest: Add --verbose option for showing echo output
  ftracetest: Fix to show descriptions on dash
  ftracetest: Add basic event tracing test cases
  ftracetest: Clear trace buffer after running kprobe testcases
  ftracetest: Use logfile name supported by busybox's mktemp
  ftracetest: Add a couple of ftrace test cases
  ftracetest: Add functions file that holds helper functions
  ftracetest: Sort testcases
  ftracetest: Add kprobes on ftrace testcase
2014-12-10 20:03:45 -08:00
Masami Hiramatsu
57cee23650 ftracetest: Add --verbose option for showing echo output
Add --verbose/-v option for showing echo output in testcases.
This is good for checking the progress of testcases which
take a longer time to run.

To implement this feature, all the testcase failures are
captured in ftracetest and send signal to set SIG_RESULT=FAIL.

Link: http://lkml.kernel.org/r/20141204194123.7376.22964.stgit@localhost.localdomain

Suggested-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2014-12-04 10:40:34 -05:00
Masami Hiramatsu
36922d133c ftracetest: Fix to show descriptions on dash
The ftracetest doesn't show testcase's descriptions when
it is executed on dash. This fixes that to show the
descriptions on dash correctly by passing it via a variable
instead of directly passing the grep command output.

Link: http://lkml.kernel.org/r/20141204194116.7376.78940.stgit@localhost.localdomain

Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2014-12-04 10:38:49 -05:00
Tim Bird
3ce51050fa selftest: size: Add size test for Linux kernel
This test shows the amount of memory used by the system.
Note that this is dependent on the user-space that is loaded
when this program runs.  Optimally, this program would be
run as the init program itself.

The program is optimized for size itself, to avoid conflating
its own execution with that of the system software.
The code is compiled statically, with no stdlibs. On my x86_64 system,
this results in a statically linked binary of less than 5K.

Signed-off-by: Tim Bird <tim.bird@sonymobile.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2014-12-03 19:27:47 -07:00
Michael Ellerman
4c12df63f7 selftests/kcmp: Always try to build the test
Don't prevent the test building on non-x86. Just try and build it and
let the chips fall where they may.

Add support for CROSS_COMPILE while we're at it. Also we don't need a
custom rule for building kcmp_test.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Reviewed-by: Christopher Covington <cov@codeaurora.org>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2014-12-02 13:53:24 -07:00
Michael Ellerman
41ec8cdcfa selftests/kcmp: Don't include kernel headers
The kcmp test mucks with the include path to bring in the kernel
headers, and x86 headers too for reasons that are not clear.

Now that kcmp.h is exported none of that should be necessary.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Acked-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2014-12-02 13:53:15 -07:00