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| author |  Changbin Du <changbin.du@huawei.com>
| 2024-03-08 12:44:01 +0800 |
|---|---|---|
| committer |  Borislav Petkov (AMD) <bp@alien8.de>
| 2024-03-08 08:59:22 +0100 |
| commit | c0935fca6ba4799e5efc6daeee37887e84707d01 (patch) | |
| tree | 96a4564fb48908764868a5dba61c00b8010931d8 | |
| parent | x86/sev: Dump SEV_STATUS (diff) | |
| download | linux-c0935fca6ba4799e5efc6daeee37887e84707d01.tar.gz linux-c0935fca6ba4799e5efc6daeee37887e84707d01.tar.bz2 linux-c0935fca6ba4799e5efc6daeee37887e84707d01.zip | |
x86/sev: Disable KMSAN for memory encryption TUs
Instrumenting sev.c and mem_encrypt_identity.c with KMSAN will result in
a triple-faulting kernel. Some of the code is invoked too early during
boot, before KMSAN is ready.
Disable KMSAN instrumentation for the two translation units.
[ bp: Massage commit message. ]
Signed-off-by: Changbin Du <changbin.du@huawei.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://lore.kernel.org/r/20240308044401.1120395-1-changbin.du@huawei.com
| -rw-r--r-- | arch/x86/kernel/Makefile | 1 | ||||
| -rw-r--r-- | arch/x86/mm/Makefile | 1 |
2 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/kernel/Makefile b/arch/x86/kernel/Makefile index 0000325ab98f..04591d0145e0 100644 --- a/arch/x86/kernel/Makefile +++ b/arch/x86/kernel/Makefile @@ -33,6 +33,7 @@ KASAN_SANITIZE_sev.o := n KCSAN_SANITIZE := n KMSAN_SANITIZE_head$(BITS).o := n KMSAN_SANITIZE_nmi.o := n +KMSAN_SANITIZE_sev.o := n # If instrumentation of the following files is enabled, boot hangs during # first second. diff --git a/arch/x86/mm/Makefile b/arch/x86/mm/Makefile index c80febc44cd2..6ec103bedcf1 100644 --- a/arch/x86/mm/Makefile +++ b/arch/x86/mm/Makefile @@ -16,6 +16,7 @@ KASAN_SANITIZE_pgprot.o := n 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 ifdef CONFIG_FUNCTION_TRACER CFLAGS_REMOVE_mem_encrypt.o = -pg |