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Shutemov" Content-Type: text/plain; charset="UTF-8" Enabling CONFIG_DEBUG_VIRTUAL=y together with KMSAN led to infinite recursion, because kmsan_get_metadata() ended up calling instrumented __pfn_valid() from arch/x86/mm/physaddr.c. Prevent it by disabling instrumentation of the whole file. Reported-by: Kirill A. Shutemov Closes: https://github.com/google/kmsan/issues/95 Signed-off-by: Alexander Potapenko --- arch/x86/mm/Makefile | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/x86/mm/Makefile b/arch/x86/mm/Makefile index 8d3a00e5c528e..d3b27a383127d 100644 --- a/arch/x86/mm/Makefile +++ b/arch/x86/mm/Makefile @@ -17,6 +17,7 @@ KCSAN_SANITIZE := n # Avoid recursion by not calling KMSAN hooks for CEA code. KMSAN_SANITIZE_cpu_entry_area.o := n KMSAN_SANITIZE_mem_encrypt_identity.o := n +KMSAN_SANITIZE_physaddr.o := n ifdef CONFIG_FUNCTION_TRACER CFLAGS_REMOVE_mem_encrypt.o = -pg -- 2.45.2.741.gdbec12cfda-goog