linux.git/tools/testing/selftests/lib, branch v6.18.21

lib/prime_numbers: KUnit test should not select PRIME_NUMBERS

2025-04-15T20:50:43+00:00

Enabling a (modular) test should not silently enable additional kernel
functionality, as that may increase the attack vector of a product.

Fix this by making PRIME_NUMBERS_KUNIT_TEST depend on PRIME_NUMBERS
instead of selecting it.

After this, one can safely enable CONFIG_KUNIT_ALL_TESTS=m to build
modules for all appropriate tests for ones system, without pulling in
extra unwanted functionality, while still allowing a tester to manually
enable PRIME_NUMBERS and this test suite on a system where PRIME_NUMBERS
is not enabled by default.  Resurrect CONFIG_PRIME_NUMBERS=m in
tools/testing/selftests/lib/config for the latter use case.

Fixes: 313b38a6ecb46db4 ("lib/prime_numbers: convert self-test to KUnit")
Signed-off-by: Geert Uytterhoeven 
Acked-by: Tamir Duberstein 
Link: https://lore.kernel.org/r/40f8a40eef4930d3ac9febd205bc171eb04e171c.1744641237.git.geert@linux-m68k.org
Signed-off-by: Kees Cook

scanf: convert self-test to KUnit

2025-03-14T20:55:37+00:00

Convert the scanf() self-test to a KUnit test.

In the interest of keeping the patch reasonably-sized this doesn't
refactor the tests into proper parameterized tests - it's all one big
test case.

Reviewed-by: David Gow 
Reviewed-by: Petr Mladek 
Tested-by: Petr Mladek 
Signed-off-by: Tamir Duberstein 
Link: https://lore.kernel.org/r/20250307-scanf-kunit-convert-v9-3-b98820fa39ff@gmail.com
Signed-off-by: Kees Cook

printf: convert self-test to KUnit

2025-03-13T17:26:33+00:00

Convert the printf() self-test to a KUnit test.

In the interest of keeping the patch reasonably-sized this doesn't
refactor the tests into proper parameterized tests - it's all one big
test case.

Signed-off-by: Tamir Duberstein 
Reviewed-by: Petr Mladek 
Tested-by: Petr Mladek 
Link: https://lore.kernel.org/r/20250307-printf-kunit-convert-v6-1-4d85c361c241@gmail.com
Signed-off-by: Kees Cook

selftests: remove reference to prime_numbers.sh

2025-02-22T14:44:45+00:00

Remove a leftover shell script reference from commit 313b38a6ecb4
("lib/prime_numbers: convert self-test to KUnit").

Reported-by: kernel test robot 
Closes: https://lore.kernel.org/oe-lkp/202502171110.708d965a-lkp@intel.com
Fixes: 313b38a6ecb4 ("lib/prime_numbers: convert self-test to KUnit")
Signed-off-by: Tamir Duberstein 
Link: https://lore.kernel.org/r/20250217-fix-prime-numbers-v1-1-eb0ca7235e60@gmail.com
Signed-off-by: Kees Cook

lib/prime_numbers: convert self-test to KUnit

2025-02-12T22:00:11+00:00

Extract a private header and convert the prime_numbers self-test to a
KUnit test. I considered parameterizing the test using
`KUNIT_CASE_PARAM` but didn't see how it was possible since the test
logic is entangled with the test parameter generation logic.

Signed-off-by: Tamir Duberstein 
Link: https://lore.kernel.org/r/20250208-prime_numbers-kunit-convert-v5-2-b0cb82ae7c7d@gmail.com
Signed-off-by: Kees Cook

selftests: lib: remove strscpy test

2024-08-01T19:55:33+00:00

The strscpy test loads test_strscpy module for testing. But test_strscpy
was converted to Kunit (see fixes). Hence remove strscpy.

Fixes: 41eefc46a3a4 ("string: Convert strscpy() self-test to KUnit")
Signed-off-by: Muhammad Usama Anjum 
Signed-off-by: Shuah Khan

selftests: lib: Add wrapper script for test_scanf

2021-05-19T13:05:11+00:00

Adds a wrapper shell script for the test_scanf module.

Signed-off-by: Richard Fitzgerald 
Reviewed-by: Petr Mladek 
Acked-by: Andy Shevchenko 
Signed-off-by: Petr Mladek 
Link: https://lore.kernel.org/r/20210514161206.30821-4-rf@opensource.cirrus.com

lib: make a test module with set/clear bit

2020-06-05T02:06:25+00:00

Test some bit clears/sets to make sure assembly doesn't change, and that
the set_bit and clear_bit functions work and don't cause sparse warnings.

Instruct Kbuild to build this file with extra warning level -Wextra, to
catch new issues, and also doesn't hurt to build with C=1.

This was used to test changes to arch/x86/include/asm/bitops.h.

In particular, sparse (C=1) was very concerned when the last bit before a
natural boundary, like 7, or 31, was being tested, as this causes sign
extension (0xffffff7f) for instance when clearing bit 7.

Recommended usage:

  make defconfig
  scripts/config -m CONFIG_TEST_BITOPS
  make modules_prepare
  make C=1 W=1 lib/test_bitops.ko
  objdump -S -d lib/test_bitops.ko
  insmod lib/test_bitops.ko
  rmmod lib/test_bitops.ko

, there should be no compiler/sparse warnings and no
error messages in log.

Link: http://lkml.kernel.org/r/20200310221747.2848474-2-jesse.brandeburg@intel.com
Signed-off-by: Jesse Brandeburg 
Reviewed-by: Andy Shevchenko 
Cc: Thomas Gleixner 
CcL Ingo Molnar 
Signed-off-by: Andrew Morton 
Cc: Borislav Petkov 
Cc: Rasmus Villemoes 
Cc: Dan Williams 
Cc: Peter Zijlstra 
Cc: Wei Yang 
Cc: Christian Brauner 
Signed-off-by: Linus Torvalds

selftests: Move kselftest_module.sh into kselftest/

2019-11-07T21:46:08+00:00

The kselftest_module.sh file was not being installed by the Makefile
"install" target, rendering the lib/*.sh tests nonfunction. This fixes
that and takes the opportunity to move it into the kselftest/ subdirectory
which is where the kselftest infrastructure bits are collecting.

Reported-by: Naresh Kamboju 
Link: https://lore.kernel.org/lkml/CA+G9fYsfJpXQvOvHdjtg8z4a89dSStOQZOKa9zMjjQgWKng1aw@mail.gmail.com
Fixes: d3460527706e ("kselftest: Add test runner creation script")
Signed-off-by: Kees Cook 
Signed-off-by: Shuah Khan

treewide: Add SPDX license identifier - Makefile/Kconfig

2019-05-21T08:50:46+00:00

Add SPDX license identifiers to all Make/Kconfig files which:

 - Have no license information of any form

These files fall under the project license, GPL v2 only. The resulting SPDX
license identifier is:

  GPL-2.0-only

Signed-off-by: Thomas Gleixner 
Signed-off-by: Greg Kroah-Hartman