From: Robin Murphy robin.murphy@arm.com
mainline inclusion from mainline-v5.6-rc1 commit 74a44bed8d93782affb707a33469bda7052b4207 category:bugfix bugzilla:NA CVE:NA
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The entire asm/archrandom.h header is generically included via linux/archrandom.h only when CONFIG_ARCH_RANDOM is already set, so the stub definitions of __arm64_rndr() and __early_cpu_has_rndr() are only visible to KASLR if it explicitly includes the arch-internal header.
Acked-by: Mark Brown broonie@kernel.org Signed-off-by: Robin Murphy robin.murphy@arm.com Signed-off-by: Will Deacon will@kernel.org Signed-off-by: Chen Jun chenjun102@huawei.com Reviewed-by: Xie XiuQi xiexiuqi@huawei.com Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- arch/arm64/kernel/kaslr.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/arch/arm64/kernel/kaslr.c b/arch/arm64/kernel/kaslr.c index 49146e5ccffe..291f53f29a4d 100644 --- a/arch/arm64/kernel/kaslr.c +++ b/arch/arm64/kernel/kaslr.c @@ -14,6 +14,7 @@ #include <linux/sched.h> #include <linux/types.h>
+#include <asm/archrandom.h> #include <asm/cacheflush.h> #include <asm/fixmap.h> #include <asm/kernel-pgtable.h>