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2023-12-18fortify: test: Use kunit_devicedavidgow@google.com
Using struct root_device to create fake devices for tests is something of a hack. The new struct kunit_device is meant for this purpose, so use it instead. Reviewed-by: Matti Vaittinen <mazziesaccount@gmail.com> Acked-by: Kees Cook <keescook@chromium.org> Signed-off-by: David Gow <davidgow@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2023-07-03Revert "fortify: Allow KUnit test to build without FORTIFY"Kees Cook
This reverts commit a9dc8d0442294b426b1ebd4ec6097c82ebe282e0. The standard for KUnit is to not build tests at all when required functionality is missing, rather than doing test "skip". Restore this for the fortify tests, so that architectures without CONFIG_ARCH_HAS_FORTIFY_SOURCE do not emit unsolvable warnings. Reported-by: Geert Uytterhoeven <geert@linux-m68k.org> Closes: https://lore.kernel.org/all/CAMuHMdUrxOEroHVUt7-mAnKSBjY=a-D3jr+XiAifuwv06Ob9Pw@mail.gmail.com Signed-off-by: Kees Cook <keescook@chromium.org>
2023-05-16fortify: Allow KUnit test to build without FORTIFYKees Cook
In order for CI systems to notice all the skipped tests related to CONFIG_FORTIFY_SOURCE, allow the FORTIFY_SOURCE KUnit tests to build with or without CONFIG_FORTIFY_SOURCE. Signed-off-by: Kees Cook <keescook@chromium.org>
2022-11-22kunit/fortify: Validate __alloc_size attribute resultsKees Cook
Validate the effect of the __alloc_size attribute on allocators. If the compiler doesn't support __builtin_dynamic_object_size(), skip the associated tests. (For GCC, just remove the "--make_options" line below...) $ ./tools/testing/kunit/kunit.py run --arch x86_64 \ --kconfig_add CONFIG_FORTIFY_SOURCE=y \ --make_options LLVM=1 fortify ... [15:16:30] ================== fortify (10 subtests) =================== [15:16:30] [PASSED] known_sizes_test [15:16:30] [PASSED] control_flow_split_test [15:16:30] [PASSED] alloc_size_kmalloc_const_test [15:16:30] [PASSED] alloc_size_kmalloc_dynamic_test [15:16:30] [PASSED] alloc_size_vmalloc_const_test [15:16:30] [PASSED] alloc_size_vmalloc_dynamic_test [15:16:30] [PASSED] alloc_size_kvmalloc_const_test [15:16:30] [PASSED] alloc_size_kvmalloc_dynamic_test [15:16:30] [PASSED] alloc_size_devm_kmalloc_const_test [15:16:30] [PASSED] alloc_size_devm_kmalloc_dynamic_test [15:16:30] ===================== [PASSED] fortify ===================== [15:16:30] ============================================================ [15:16:30] Testing complete. Ran 10 tests: passed: 10 [15:16:31] Elapsed time: 8.348s total, 0.002s configuring, 6.923s building, 1.075s running For earlier GCC prior to version 12, the dynamic tests will be skipped: [15:18:59] ================== fortify (10 subtests) =================== [15:18:59] [PASSED] known_sizes_test [15:18:59] [PASSED] control_flow_split_test [15:18:59] [PASSED] alloc_size_kmalloc_const_test [15:18:59] [SKIPPED] alloc_size_kmalloc_dynamic_test [15:18:59] [PASSED] alloc_size_vmalloc_const_test [15:18:59] [SKIPPED] alloc_size_vmalloc_dynamic_test [15:18:59] [PASSED] alloc_size_kvmalloc_const_test [15:18:59] [SKIPPED] alloc_size_kvmalloc_dynamic_test [15:18:59] [PASSED] alloc_size_devm_kmalloc_const_test [15:18:59] [SKIPPED] alloc_size_devm_kmalloc_dynamic_test [15:18:59] ===================== [PASSED] fortify ===================== [15:18:59] ============================================================ [15:18:59] Testing complete. Ran 10 tests: passed: 6, skipped: 4 [15:18:59] Elapsed time: 11.965s total, 0.002s configuring, 10.540s building, 1.068s running Cc: David Gow <davidgow@google.com> Cc: linux-hardening@vger.kernel.org Signed-off-by: Kees Cook <keescook@chromium.org>
2022-09-14fortify: Adjust KUnit test for modular buildKees Cook
A much better "unknown size" string pointer is available directly from struct test, so use that instead of a global that isn't shared with modules. Reported-by: Nathan Chancellor <nathan@kernel.org> Link: https://lore.kernel.org/lkml/YyCOHOchVuE/E7vS@dev-arch.thelio-3990X Fixes: 875bfd5276f3 ("fortify: Add KUnit test for FORTIFY_SOURCE internals") Cc: linux-hardening@vger.kernel.org Build-tested-by: Nathan Chancellor <nathan@kernel.org> Reviewed-by: David Gow <davidgow@google.com> Signed-off-by: Kees Cook <keescook@chromium.org>
2022-09-07fortify: Add KUnit test for FORTIFY_SOURCE internalsKees Cook
Add lib/fortify_kunit.c KUnit test for checking the expected behavioral characteristics of FORTIFY_SOURCE internals. Cc: Nick Desaulniers <ndesaulniers@google.com> Cc: Nathan Chancellor <nathan@kernel.org> Cc: Tom Rix <trix@redhat.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: "Steven Rostedt (Google)" <rostedt@goodmis.org> Cc: Yury Norov <yury.norov@gmail.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Sander Vanheule <sander@svanheule.net> Cc: linux-hardening@vger.kernel.org Cc: llvm@lists.linux.dev Reviewed-by: David Gow <davidgow@google.com> Signed-off-by: Kees Cook <keescook@chromium.org>