From ac8a8320bc6c84d25352a88ee4d582e873a79f21 Mon Sep 17 00:00:00 2001 From: Tanner Gooding Date: Mon, 27 Mar 2023 23:43:43 -0700 Subject: [PATCH] Ensure that CONTEXT_XStateFeaturesMask is explicitly zeroed out on RtlCaptureContext --- src/coreclr/pal/src/arch/amd64/context2.S | 1 + 1 file changed, 1 insertion(+) diff --git a/src/coreclr/pal/src/arch/amd64/context2.S b/src/coreclr/pal/src/arch/amd64/context2.S index e4ab8ac1b19c3c..87a1277270c49b 100644 --- a/src/coreclr/pal/src/arch/amd64/context2.S +++ b/src/coreclr/pal/src/arch/amd64/context2.S @@ -81,6 +81,7 @@ LEAF_END CONTEXT_CaptureContext, _TEXT LEAF_ENTRY RtlCaptureContext, _TEXT mov DWORD PTR [rdi + CONTEXT_ContextFlags], (CONTEXT_AMD64 | CONTEXT_FULL | CONTEXT_SEGMENTS) + mov QWORD PTR [rdi + CONTEXT_XStateFeaturesMask], 0 jmp C_FUNC(CONTEXT_CaptureContext) LEAF_END RtlCaptureContext, _TEXT