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| author |   Alexander Potapenko <glider@google.com> | 2019-07-16 16:27:27 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2019-07-16 19:23:22 -0700 |
| commit | 5015a300a522c8fb542dc993140e4c360cf4cf5f (patch) | |
| tree | dbad49fce32d12ce9c68a81656963cb1803992a0 /lib/Kconfig.debug | |
| parent | lib/test_overflow.c: avoid tainting the kernel and fix wrap size (diff) | |
| download | linux-dev-5015a300a522c8fb542dc993140e4c360cf4cf5f.tar.xz linux-dev-5015a300a522c8fb542dc993140e4c360cf4cf5f.zip | |
lib: introduce test_meminit module
Add tests for heap and pagealloc initialization. These can be used to
check init_on_alloc and init_on_free implementations as well as other
approaches to initialization.
Expected test output in the case the kernel provides heap initialization
(e.g. when running with either init_on_alloc=1 or init_on_free=1):
test_meminit: all 10 tests in test_pages passed
test_meminit: all 40 tests in test_kvmalloc passed
test_meminit: all 60 tests in test_kmemcache passed
test_meminit: all 10 tests in test_rcu_persistent passed
test_meminit: all 120 tests passed!
Link: http://lkml.kernel.org/r/20190529123812.43089-4-glider@google.com
Signed-off-by: Alexander Potapenko <glider@google.com>
Acked-by: Kees Cook <keescook@chromium.org>
Cc: Christoph Lameter <cl@linux.com>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Kostya Serebryany <kcc@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Sandeep Patil <sspatil@android.com>
Cc: Laura Abbott <labbott@redhat.com>
Cc: Jann Horn <jannh@google.com>
Cc: Marco Elver <elver@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to '')
| -rw-r--r-- | lib/Kconfig.debug | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index 4ac4ca21a30a..c6ee805202bd 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -2076,6 +2076,14 @@ config TEST_STACKINIT If unsure, say N. +config TEST_MEMINIT + tristate "Test heap/page initialization" + help + Test if the kernel is zero-initializing heap and page allocations. + This can be useful to test init_on_alloc and init_on_free features. + + If unsure, say N. + endif # RUNTIME_TESTING_MENU config MEMTEST |