93324e6842
Instrumenting some files with KMSAN will result in kernel being unable to link, boot or crashing at runtime for various reasons (e.g. infinite recursion caused by instrumentation hooks calling instrumented code again). Completely omit KMSAN instrumentation in the following places: - arch/x86/boot and arch/x86/realmode/rm, as KMSAN doesn't work for i386; - arch/x86/entry/vdso, which isn't linked with KMSAN runtime; - three files in arch/x86/kernel - boot problems; - arch/x86/mm/cpu_entry_area.c - recursion. Link: https://lkml.kernel.org/r/20220915150417.722975-33-glider@google.com Signed-off-by: Alexander Potapenko <glider@google.com> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Andrey Konovalov <andreyknvl@gmail.com> Cc: Andrey Konovalov <andreyknvl@google.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Borislav Petkov <bp@alien8.de> Cc: Christoph Hellwig <hch@lst.de> Cc: Christoph Lameter <cl@linux.com> Cc: David Rientjes <rientjes@google.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Eric Biggers <ebiggers@google.com> Cc: Eric Biggers <ebiggers@kernel.org> Cc: Eric Dumazet <edumazet@google.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: Ilya Leoshkevich <iii@linux.ibm.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jens Axboe <axboe@kernel.dk> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Kees Cook <keescook@chromium.org> Cc: Marco Elver <elver@google.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Michael S. Tsirkin <mst@redhat.com> Cc: Pekka Enberg <penberg@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Petr Mladek <pmladek@suse.com> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Vegard Nossum <vegard.nossum@oracle.com> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
67 lines
2.1 KiB
Makefile
67 lines
2.1 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
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# Kernel does not boot with instrumentation of tlb.c and mem_encrypt*.c
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KCOV_INSTRUMENT_tlb.o := n
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KCOV_INSTRUMENT_mem_encrypt.o := n
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KCOV_INSTRUMENT_mem_encrypt_amd.o := n
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KCOV_INSTRUMENT_mem_encrypt_identity.o := n
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KCOV_INSTRUMENT_pgprot.o := n
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KASAN_SANITIZE_mem_encrypt.o := n
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KASAN_SANITIZE_mem_encrypt_amd.o := n
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KASAN_SANITIZE_mem_encrypt_identity.o := n
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KASAN_SANITIZE_pgprot.o := n
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# Disable KCSAN entirely, because otherwise we get warnings that some functions
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# reference __initdata sections.
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KCSAN_SANITIZE := n
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# Avoid recursion by not calling KMSAN hooks for CEA code.
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KMSAN_SANITIZE_cpu_entry_area.o := n
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ifdef CONFIG_FUNCTION_TRACER
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CFLAGS_REMOVE_mem_encrypt.o = -pg
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CFLAGS_REMOVE_mem_encrypt_amd.o = -pg
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CFLAGS_REMOVE_mem_encrypt_identity.o = -pg
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CFLAGS_REMOVE_pgprot.o = -pg
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endif
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obj-y := init.o init_$(BITS).o fault.o ioremap.o extable.o mmap.o \
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pgtable.o physaddr.o tlb.o cpu_entry_area.o maccess.o pgprot.o
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obj-y += pat/
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# Make sure __phys_addr has no stackprotector
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CFLAGS_physaddr.o := -fno-stack-protector
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CFLAGS_mem_encrypt_identity.o := -fno-stack-protector
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CFLAGS_fault.o := -I $(srctree)/$(src)/../include/asm/trace
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obj-$(CONFIG_X86_32) += pgtable_32.o iomap_32.o
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obj-$(CONFIG_HUGETLB_PAGE) += hugetlbpage.o
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obj-$(CONFIG_PTDUMP_CORE) += dump_pagetables.o
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obj-$(CONFIG_PTDUMP_DEBUGFS) += debug_pagetables.o
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obj-$(CONFIG_HIGHMEM) += highmem_32.o
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KASAN_SANITIZE_kasan_init_$(BITS).o := n
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obj-$(CONFIG_KASAN) += kasan_init_$(BITS).o
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obj-$(CONFIG_MMIOTRACE) += mmiotrace.o
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mmiotrace-y := kmmio.o pf_in.o mmio-mod.o
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obj-$(CONFIG_MMIOTRACE_TEST) += testmmiotrace.o
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obj-$(CONFIG_NUMA) += numa.o numa_$(BITS).o
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obj-$(CONFIG_AMD_NUMA) += amdtopology.o
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obj-$(CONFIG_ACPI_NUMA) += srat.o
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obj-$(CONFIG_NUMA_EMU) += numa_emulation.o
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obj-$(CONFIG_X86_INTEL_MEMORY_PROTECTION_KEYS) += pkeys.o
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obj-$(CONFIG_RANDOMIZE_MEMORY) += kaslr.o
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obj-$(CONFIG_PAGE_TABLE_ISOLATION) += pti.o
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obj-$(CONFIG_X86_MEM_ENCRYPT) += mem_encrypt.o
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obj-$(CONFIG_AMD_MEM_ENCRYPT) += mem_encrypt_amd.o
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obj-$(CONFIG_AMD_MEM_ENCRYPT) += mem_encrypt_identity.o
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obj-$(CONFIG_AMD_MEM_ENCRYPT) += mem_encrypt_boot.o
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