kselftest and kselftest-clean targets fail when object directory is
specified to relocate objects. Main Makefile make O= path clears the
built-in defines LINK.c, COMPILE.S, LINK.S, and RM that are used in
lib.mk to build and clean targets. Define them.

Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>

Explicitly define SO_EE_ORIGIN_ZEROCOPY.
This makes the test program build with older kernel headers,
e.g. from Debian 9.

Signed-off-by: Thomas Meyer <thomas@m3y3r.de>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>

These self tests are just self contained binaries, they are not run by
any of the scripts in the directory.  This means they need to be marked
with TEST_GEN_PROGS to actually be run, not TEST_GEN_FILES.

Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>

This is to test for a regression introduced by

b9470c27 ("inet: kill smallest_size and smallest_port")

which introduced a problem with reuseaddr and bind conflicts.

Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>

Some of the networking tests are very noisy and make it impossible to
see if we actually passed the tests as they run.  Default to suppressing
the output from any tests run in order to make it easier to track what
failed.

Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>

The multiple_kprobes test case fails to check for KPROBE_EVENT support.
Add the check to prevent a false test result.

Signed-off-by: Thomas Meyer <thomas@m3y3r.de>
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>

The current implementation fails to work on uniprocessor systems.
Fix the parser to also handle the uniprocessor case.

Signed-off-by: Thomas Meyer <thomas@m3y3r.de>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>

Both test programs are being compiled by make, so no need to compile both
programs in the runner script.
This resolves an error when installing all selftests via make install
and run them in a different environemnt.

Running tests in intel_pstate
========================================
./run.sh: line 35: gcc: command not found
Problem compiling aperf.c.

Signed-off-by: Thomas Meyer <thomas@m3y3r.de>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>

These tests are only for x86, so don't try to build or run
them on other architectures.

Signed-off-by: Daniel Díaz <daniel.diaz@linaro.org>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>

breakpoint_test can fail on arm64 with older/unpatched glibc:

 breakpoint_test_arm64.c: In function 'run_test':
 breakpoint_test_arm64.c:170:25: error: 'TRAP_HWBKPT' undeclared (first use
 in this function)

due to glibc missing several of the TRAP_* constants in the userspace
definitions. Specifically TRAP_BRANCH and TRAP_HWBKPT.
See https://sourceware.org/bugzilla/show_bug.cgi?id=21286



It prevents to build step_after_suspend_test afterward, since make won't
continue.

We still want to be able to build and run the test, independently of
breakpoint_test_arm64 build failure. Re-order TEST_GEN_PROGS to be able to
build step_after_suspend_test first.

Signed-off-by: Fathi Boudra <fathi.boudra@linaro.org>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>

On s390x the compilation of the file sas.c in directory
tools/testing/selftests/sigaltstack fails with this error message:

   root@s35lp76 testing]# make selftests/sigaltstack/sas
   cc     selftests/sigaltstack/sas.c   -o selftests/sigaltstack/sas
   selftests/sigaltstack/sas.c: In function ‘my_usr1’:
   selftests/sigaltstack/sas.c:42:25: error: invalid register name for ‘sp’
     register unsigned long sp asm("sp");
                         ^~
   <builtin>: recipe for target 'selftests/sigaltstack/sas' failed
   make: *** [selftests/sigaltstack/sas] Error 1
   [root@s35lp76 testing]#

On s390x the stack pointer is register r15, the register name "sp"
is unknown.
Make this line platform dependend and use register r15.

With this patch the compilation and test succeeds:

   [root@s35lp76 testing]# ./selftests/sigaltstack/sas
   TAP version 13
   ok 1 Initial sigaltstack state was SS_DISABLE
   # [RUN]	signal USR1
   ok 2 sigaltstack is disabled in sighandler
   # [RUN]	switched to user ctx
   # [RUN]	signal USR2
   # [OK]	Stack preserved
   ok 3 sigaltstack is still SS_AUTODISARM after signal
   Pass 3 Fail 0 Xfail 0 Xpass 0 Skip 0 Error 0
   1..3
   [root@s35lp76 testing]#

Signed-off-by: Thomas Richter <tmricht@linux.vnet.ibm.com>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>

The ip tool might be provided by another package (such as
Busybox), not necessarily implementing the -Version switch.
Trying an actual usage (`ip link show') might be a better
test that would work with all implementations of `ip'.

Signed-off-by: Daniel Díaz <daniel.diaz@linaro.org>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>

Neither ___bpf_prog_run nor the JITs accept it.
Also adds a new test case.

Fixes: 17a52670 ("bpf: verifier (add verifier core)")
Signed-off-by: Edward Cree <ecree@solarflare.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

The bpf map sockmap supports adding programs via attach commands. This
patch adds the detach command to keep the API symmetric and allow
users to remove previously added programs. Otherwise the user would
have to delete the map and re-add it to get in this state.

This also adds a series of additional tests to capture detach operation
and also attaching/detaching invalid prog types.

API note: socks will run (or not run) programs depending on the state
of the map at the time the sock is added. We do not for example walk
the map and remove programs from previously attached socks.

Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

KCMP's KCMP_EPOLL_TFD mode merged in commit 0791e364 ("kcmp: add
KCMP_EPOLL_TFD mode to compare epoll target files") we've had no selftest
for it yet (except in criu development list).  Thus add it.

Link: http://lkml.kernel.org/r/20170901151620.GK1898@uranus.lan


Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Cc: Andrey Vagin <avagin@openvz.org>
Cc: Pavel Emelyanov <xemul@virtuozzo.com>
Cc: Michael Kerrisk <mtk.manpages@gmail.com>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

With the addition of hugetlbfs support in memfd_create, the memfd
selftests should verify correct functionality with hugetlbfs.

Instead of writing a separate memfd hugetlbfs test, modify the
memfd_test program to take an optional argument 'hugetlbfs'.  If the
hugetlbfs argument is specified, basic memfd_create functionality will
be exercised on hugetlbfs.  If hugetlbfs is not specified, the current
functionality of the test is unchanged.

Note that many of the tests in memfd_test test file sealing operations.
hugetlbfs does not support file sealing, therefore for hugetlbfs all
sealing related tests are skipped.

In order to test on hugetlbfs, there needs to be preallocated huge
pages.  A new script (run_tests) is added.  This script will first run
the existing memfd_create tests.  It will then, attempt to allocate the
required number of huge pages before running the hugetlbfs test.  At the
end of testing, it will release any huge pages allocated for testing
purposes.

Link: http://lkml.kernel.org/r/1502495772-24736-3-git-send-email-mike.kravetz@oracle.com


Signed-off-by: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: "Kirill A . Shutemov" <kirill.shutemov@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Showing zero in the output isn't very self explanatory as a successful
result.  Show a more explicit error output if the test fails.

Link: http://lkml.kernel.org/r/20170802165145.22628-4-aarcange@redhat.com


Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Cc: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
Cc: Alexey Perevalov <a.perevalov@samsung.com>
Cc: Maxime Coquelin <maxime.coquelin@redhat.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Mike Rapoport <rppt@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

This will retry the UFFDIO_COPY/ZEROPAGE to verify it returns -EEXIST at
the first invocation and then later every 10 seconds.

In the filebacked MAP_SHARED case this also verifies the -EEXIST
triggered in the filesystem pagecache insertion, if the offset in the
file was not a hole.

shmem MAP_SHARED tries to index the newly allocated pagecache in the
radix tree before checking the pagetable so it doesn't need any
assistance to exercise that case.

hugetlbfs checks the pmd to be not none before trying to index the
hugetlbfs page in the radix tree, so it requires to run UFFDIO_COPY into
an alias mapping (the alternative would be to use MADV_DONTNEED to only
zap the pagetables, but that doesn't work on hugetlbfs).

[akpm@linux-foundation.org: fix uffdio_zeropage(), per Mike Kravetz]
Link: http://lkml.kernel.org/r/20170802165145.22628-3-aarcange@redhat.com


Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Cc: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
Cc: Alexey Perevalov <a.perevalov@samsung.com>
Cc: Maxime Coquelin <maxime.coquelin@redhat.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Mike Rapoport <rppt@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Add tests for UFFD_FEATURE_SIGBUS feature.  The tests will verify signal
delivery instead of userfault events.  Also, test use of UFFDIO_COPY to
allocate memory and retry accessing monitored area after signal
delivery.

Also fix a bug in uffd_poll_thread() where 'uffd' is leaked.

Link: http://lkml.kernel.org/r/1501552446-748335-3-git-send-email-prakash.sangappa@oracle.com


Signed-off-by: Prakash Sangappa <prakash.sangappa@oracle.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Mike Rapoport <rppt@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Link: http://lkml.kernel.org/r/1497939652-16528-8-git-send-email-rppt@linux.vnet.ibm.com


Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Hillf Danton <hillf.zj@alibaba-inc.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Pavel Emelyanov <xemul@virtuozzo.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

When a test process is not able to write to TH_LOG_STREAM, this step
mechanism enable to print the assert number which triggered the failure.
This can be enabled by setting _metadata->no_print to true at the
beginning of the test sequence.

Update the seccomp-bpf test to return 0 if a test succeeded.

This feature is needed for the Landlock tests.

Signed-off-by: Mickaël Salaün <mic@digikod.net>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Kees Cook <keescook@chromium.org>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Will Drewry <wad@chromium.org>
Link: https://lkml.kernel.org/r/CAGXu5j+D-FP8Kt9unNOqKrQJP4DYTpmgkJxWykZyrYiVPz3Y3Q@mail.gmail.com


Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>

The msg_zerocopy test defines SO_ZEROCOPY if necessary, but its value
is inconsistent with the one in asm-generic.h. Correct that.

Also convert one error to a warning. When the test is complete, report
throughput and close cleanly even if the process did not wait for all
completions.

Reported-by: Dan Melnic <dmm@fb.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

mmio_flush_range() suffers from a lack of clearly-defined semantics,
and is somewhat ambiguous to port to other architectures where the
scope of the writeback implied by "flush" and ordering might matter,
but MMIO would tend to imply non-cacheable anyway. Per the rationale
in 67a3e8fe ("nd_blk: change aperture mapping from WC to WB"), the
only existing use is actually to invalidate clean cache lines for
ARCH_MEMREMAP_PMEM type mappings *without* writeback. Since the recent
cleanup of the pmem API, that also now happens to be the exact purpose
of arch_invalidate_pmem(), which would be a far more well-defined tool
for the job.

Rather than risk potentially inconsistent implementations of
mmio_flush_range() for the sake of one callsite, streamline things by
removing it entirely and instead move the ARCH_MEMREMAP_PMEM related
definitions up to the libnvdimm level, so they can be shared by NFIT
as well. This allows NFIT to be enabled for arm64.

Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>

Currently these tests won't build with a `--enable-default-pie`
compiler as they require r30 to be clobbered. This gives
an error:
  ptrace-tm-spd-gpr.c:41:2: error: PIC register clobbered by 'r30' in 'asm'

This forces these tests to be built no-pie.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

.llong is an undocumented PPC specific directive. The generic
equivalent is .quad, but even better (because it's self describing) is
.8byte.

Convert all .llong directives to .8byte.

Signed-off-by: Tobin C. Harding <me@tobin.cc>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

Trivial fix to typos in printf error messages:
"conenct" -> "connect"
"listeen" -> "listen"

thanks to Daniel Borkmann for spotting one of these mistakes

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Shuah Khan <shuahkh@osg.samsung.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

This patch adds a new testcase for the IFE type setting in tc. In case
of user specified the type it will check if the ife is correctly
configured to react on it. If it's not specified the default IFE type
should be used.

Signed-off-by: Alexander Aring <aring@mojatatu.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

Add a basic test for checking whether kernel is populating
the jited and xlated BPF images.  It was used to confirm
the behaviour change from commit d777b2dd ("bpf: don't
zero out the info struct in bpf_obj_get_info_by_fd()"),
which made bpf_obj_get_info_by_fd() usable for retrieving
the image dumps.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Sockmap is a bit different than normal stress tests that can run
in parallel as is. We need to reuse the same socket pool and map
pool to get good stress test cases.

Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

When attaching a program to sockmap we need to check map type
is correct.

Fixes: 174a79ff ("bpf: sockmap with sk redirect support")
Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

Tests packet read/writes and additional skb fields.

Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

Add some more sockmap tests to cover,

 - forwarding to NULL entries
 - more than two maps to test list ops
 - forwarding to different map

Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

In the initial sockmap API we provided strparser and verdict programs
using a single attach command by extending the attach API with a the
attach_bpf_fd2 field.

However, if we add other programs in the future we will be adding a
field for every new possible type, attach_bpf_fd(3,4,..). This
seems a bit clumsy for an API. So lets push the programs using two
new type fields.

   BPF_SK_SKB_STREAM_PARSER
   BPF_SK_SKB_STREAM_VERDICT

This has the advantage of having a readable name and can easily be
extended in the future.

Updates to samples and sockmap included here also generalize tests
slightly to support upcoming patch for multiple map support.

Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Fixes: 174a79ff ("bpf: sockmap with sk redirect support")
Suggested-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

Change common RUN_TESTS to print messages in user friendly TAP13 format.
This change add TAP13 header at the start of RUN_TESTS target run, and
prints the resulting pass/fail messages with test number information in
the TAP 13 format for each test in the run tests list.

This change covers test scripts as well as test programs. Test programs
have an option to use ksft_ API, however test scripts won't be able to.
With this change, test scripts can print TAP13 format output without any
changes to individual scripts.

Test programs can provide TAP13 format output as needed as some tests
already do. Tests that haven't been converted will benefit from this
change. Tests that are converted benefit from the test counts for all
the tests in each test directory.

Running firmware tests:
make --silent -C tools/testing/selftests/firmware/ run_tests

Before the change:

modprobe: ERROR: could not insert 'test_firmware': Operation not
permitted
./fw_filesystem.sh: /sys/devices/virtual/misc/test_firmware not present
You must have the following enabled in your kernel:
CONFIG_TEST_FIRMWARE=y
selftests:  fw_filesystem.sh [FAIL]
modprobe: ERROR: could not insert 'test_firmware': Operation not
permitted
selftests:  fw_fallback.sh [FAIL]

After the change:

TAP version 13
selftests: fw_filesystem.sh
========================================
modprobe: ERROR: could not insert 'test_firmware': Operation not
permitted
./fw_filesystem.sh: /sys/devices/virtual/misc/test_firmware not present
You must have the following enabled in your kernel:
CONFIG_TEST_FIRMWARE=y
not ok 1..1 selftests:  fw_filesystem.sh [FAIL]
selftests: fw_fallback.sh
========================================
modprobe: ERROR: could not insert 'test_firmware': Operation not
permitted
not ok 1..2 selftests:  fw_fallback.sh [FAIL]

Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>

Change lib.mk RUN_TESTS to take test list as an argument. This will
allow it to be called from individual test makefiles to run additional
tests that aren't suitable for a default kselftest run. As an example,
timers test includes destructive tests that aren't included in the
common run_tests target.

Change times/Makefile to use RUN_TESTS call with destructive test list
as an argument instead of using its own RUN_TESTS target.

Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>

Suppress "cd" output from run_tests while running tests to declutter the
test results.

Running efivarfs test:
make --silent -C tools/testing/selftests/efivarfs/ run_tests

Before the change:

skip all tests: must be run as root
selftests: efivarfs.sh [PASS]
/lkml/linux-kselftest/tools/testing/selftests/efivarfs

After the change:

skip all tests: must be run as root
selftests: efivarfs.sh [PASS]

Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>

When a test is skipped, instead of using a special exit code of 4, treat
it as pass condition and use exit code of 0. It makes sense to treat skip
as pass since the test couldn't be run as opposed to a failed test.

Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>

clocksource_list array is defined as char [10][30] so
to initialise it we only have to iterate 10 times.

Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>

The test makes a read through a map value pointer, then considers pruning
 a branch where the register holds an adjusted map value pointer.  It
 should not prune, but currently it does.

Signed-off-by: Alexei Starovoitov <ast@fb.com>
[ecree@solarflare.com: added test-name and patch description]
Signed-off-by: Edward Cree <ecree@solarflare.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>