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Alexander Potapenko authored
commit 5478afc5 ("kmsan: fix memcpy tests") uses OPTIMIZER_HIDE_VAR() to hide the uninitialized var from the compiler optimizations. However OPTIMIZER_HIDE_VAR(uninit) enforces an immediate check of @uninit, so memcpy tests did not actually check the behavior of memcpy(), because they always contained a KMSAN report. Replace OPTIMIZER_HIDE_VAR() with a file-local macro that just clobbers the memory with a barrier(), and add a test case for memcpy() that does not expect an error report. Also reflow kmsan_test.c with clang-format. Link: https://lkml.kernel.org/r/20230303141433.3422671-2-glider@google.comSigned-off-by:
Alexander Potapenko <glider@google.com> Reviewed-by:
Marco Elver <elver@google.com> Cc: Daniel Vetter <daniel@ffwll.ch> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Helge Deller <deller@gmx.de> Cc: Kees Cook <keescook@chromium.org> Cc: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org>
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