Hi Linus,

Please pull the following Kselftest update for Linux 5.2-rc1

This kselftest second update for Linux 5.2-rc1 consists of

Kselftest framework fixes from Shuah Khan

- kselftest framework bpf build/test workflow regression fix - Fix to kselftest install to use default install path - Fix to kselftest KBUILD_OUTPUT builds to not clutter main KBUILD_OUTPUT directory with selftest objects

- .gitignore fixes from Kelsey Skunberg

- rseq selftests updates from Mathieu Desnoyers and Martin Schwidefsky:

They change the per-architecture pre-abort signatures to ensure those are valid trap instructions.

The way exit points are presented to debuggers is enhanced, ensuring all exit points are present, so debuggers don't have to disassemble rseq critical section to properly skip over them.

Discussions with the glibc community is reaching a consensus of exposing a __rseq_handled symbol from glibc to coexist with rseq early adopters. Update the rseq selftest code to expose and use this symbol.

Support for compiling asm goto with clang is added with the "-no-integrated-as" compiler switch, similarly to the top level kernel Makefile.

- kselftest Makefile test run output refactoring and making test output TAP13 compliant from Kees Cook:

This re-factors the selftest Makefiles to extract the test running logic to be reused between "run_tests" and "emit_tests", while also fixing up the test output to be TAP version 13 compliant: - added "plan" line - fixed result line syntax - moved all test output to be "# "-prefixed as TAP "diagnostic" lines

The prefixing code includes a fallback mode for limited execution environments.

Additionally, the plan lines are fixed for all callers of kselftest.h.

diff is attached.

Also, there is a merge conflict with the following commit which went through the s390 maintainer tree and is now in your master which will require a minor fix-up.

commit e24e4712efad737ca09ff299276737331cd021d9 Author: Martin Schwidefsky schwidefsky@de.ibm.com rseq/selftests: s390: use trap4 for RSEQ_SIG

thanks, -- Shuah

--------------------------------------------------------------- The following changes since commit d917fb876f6eaeeea8a2b620d2a266ce26372f4d:

selftests: build and run gpio when output directory is the src dir (2019-04-22 17:02:26 -0600)

are available in the Git repository at:

git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest tags/linux-kselftest-5.2-rc1-2

for you to fetch changes up to 61c2018c0743fe0c9ca68e308b5727b8a7c3d544:

selftests: avoid KBUILD_OUTPUT dir cluttering with selftest objects (2019-05-14 17:37:41 -0600)

---------------------------------------------------------------- linux-kselftest-5.2-rc1-2

This kselftest second update for Linux 5.2-rc1 consists of

Kselftest framework fixes from Shuah Khan

- kselftest framework bpf build/test workflow regression fix - Fix to kselftest install to use default install path - Fix to kselftest KBUILD_OUTPUT builds to not clutter main KBUILD_OUTPUT directory with selftest objects

- .gitignore fixes from Kelsey Skunberg

- rseq selftests updates from Mathieu Desnoyers and Martin Schwidefsky:

They change the per-architecture pre-abort signatures to ensure those are valid trap instructions.

The way exit points are presented to debuggers is enhanced, ensuring all exit points are present, so debuggers don't have to disassemble rseq critical section to properly skip over them.

Discussions with the glibc community is reaching a consensus of exposing a __rseq_handled symbol from glibc to coexist with rseq early adopters. Update the rseq selftest code to expose and use this symbol.

Support for compiling asm goto with clang is added with the "-no-integrated-as" compiler switch, similarly to the top level kernel Makefile.

- kselftest Makefile test run output refactoring and making test output TAP13 compliant from Kees Cook:

This re-factors the selftest Makefiles to extract the test running logic to be reused between "run_tests" and "emit_tests", while also fixing up the test output to be TAP version 13 compliant: - added "plan" line - fixed result line syntax - moved all test output to be "# "-prefixed as TAP "diagnostic" lines

The prefixing code includes a fallback mode for limited execution environments.

Additionally, the plan lines are fixed for all callers of kselftest.h.

---------------------------------------------------------------- Kees Cook (8): selftests: Extract single-test shell logic from lib.mk selftests: Use runner.sh for emit targets selftests: Extract logic for multiple test runs selftests: Add plan line and fix result line syntax selftests: Distinguish between missing and non-executable selftests: Move test output to diagnostic lines selftests: Remove KSFT_TAP_LEVEL selftests: Add test plan API to kselftest.h and adjust callers

Kelsey Skunberg (2): selftests: pidfd: Create .gitignore to include pidfd_test selftests: drivers: Create .gitignore to include /dma-buf/udmabuf

Martin Schwidefsky (1): rseq/selftests: s390: use trap4 for RSEQ_SIG

Mathieu Desnoyers (11): rseq/selftests: x86: Work-around bogus gcc-8 optimisation rseq/selftests: Add __rseq_exit_point_array section for debuggers rseq/selftests: Introduce __rseq_cs_ptr_array, rename __rseq_table to __rseq_cs rseq/selftests: Use __rseq_handled symbol to coexist with glibc rseq/selftests: s390: use jg instruction for jumps outside of the asm rseq/selftests: x86: use ud1 instruction as RSEQ_SIG opcode rseq/selftests: arm: use udf instruction for RSEQ_SIG rseq/selftests: aarch64 code signature: handle big-endian environment rseq/selftests: powerpc code signature: generate valid instructions rseq/selftests: mips: use break instruction for RSEQ_SIG rseq/selftests: add -no-integrated-as for clang

Shuah Khan (3): selftests: fix install target to use default install path selftests: fix bpf build/test workflow regression when KBUILD_OUTPUT is set selftests: avoid KBUILD_OUTPUT dir cluttering with selftest objects

tools/testing/selftests/.gitignore | 1 - tools/testing/selftests/Makefile | 39 +-- .../selftests/breakpoints/breakpoint_test.c | 15 +- .../selftests/breakpoints/breakpoint_test_arm64.c | 3 +- .../breakpoints/step_after_suspend_test.c | 8 + tools/testing/selftests/capabilities/test_execve.c | 6 +- tools/testing/selftests/drivers/.gitignore | 1 + .../selftests/futex/functional/futex_requeue_pi.c | 1 + .../functional/futex_requeue_pi_mismatched_ops.c | 1 + .../functional/futex_requeue_pi_signal_restart.c | 1 + .../functional/futex_wait_private_mapped_file.c | 1 + .../futex/functional/futex_wait_timeout.c | 1 + .../functional/futex_wait_uninitialized_heap.c | 1 + .../futex/functional/futex_wait_wouldblock.c | 1 + tools/testing/selftests/kselftest.h | 17 +- tools/testing/selftests/kselftest/prefix.pl | 23 ++ tools/testing/selftests/kselftest/runner.sh | 86 +++++++ tools/testing/selftests/lib.mk | 76 ++---- .../testing/selftests/membarrier/membarrier_test.c | 1 +

tools/testing/selftests/pidfd/.gitignore | 1 + tools/testing/selftests/pidfd/pidfd_test.c | 1 + tools/testing/selftests/rseq/Makefile | 8 +- tools/testing/selftests/rseq/rseq-arm.h | 132 +++++++++-- tools/testing/selftests/rseq/rseq-arm64.h | 74 +++++- tools/testing/selftests/rseq/rseq-mips.h | 115 ++++++++- tools/testing/selftests/rseq/rseq-ppc.h | 90 ++++++- tools/testing/selftests/rseq/rseq-s390.h | 78 +++++- tools/testing/selftests/rseq/rseq-x86.h | 264 ++++++++++++++------- tools/testing/selftests/rseq/rseq.c | 55 ++++- tools/testing/selftests/rseq/rseq.h | 1 + tools/testing/selftests/sigaltstack/sas.c | 1 + tools/testing/selftests/sync/sync_test.c | 1 + 32 files changed, 883 insertions(+), 221 deletions(-) create mode 100644 tools/testing/selftests/drivers/.gitignore create mode 100755 tools/testing/selftests/kselftest/prefix.pl create mode 100644 tools/testing/selftests/kselftest/runner.sh create mode 100644 tools/testing/selftests/pidfd/.gitignore

---------------------------------------------------------------