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From 8417f6af54c8f6dcf5893ab1352b50bf33c5a1ba Mon Sep 17 00:00:00 2001
From: Hans Wennborg <hans@chromium.org>
Date: Mon, 21 Oct 2024 17:51:42 +0200
Subject: [PATCH] [win/asan] Fix instruction size for 44 0f b6 1a
movzx r11d,BYTE PTR [rdx]
is four bytes long.
Follow-up to #111638
---
compiler-rt/lib/interception/interception_win.cpp | 1 +
1 file changed, 1 insertion(+)
diff --git a/compiler-rt/lib/interception/interception_win.cpp b/compiler-rt/lib/interception/interception_win.cpp
index 4f60d4251303..077a536dd2a3 100644
--- a/compiler-rt/lib/interception/interception_win.cpp
+++ b/compiler-rt/lib/interception/interception_win.cpp
@@ -769,6 +769,7 @@ static size_t GetInstructionSize(uptr address, size_t* rel_offset = nullptr) {
switch (*(u32*)(address)) {
case 0x1ab60f44: // 44 0f b6 1a : movzx r11d, BYTE PTR [rdx]
+ return 4;
case 0x24448b48: // 48 8b 44 24 XX : mov rax, QWORD ptr [rsp + XX]
case 0x246c8948: // 48 89 6C 24 XX : mov QWORD ptr [rsp + XX], rbp
case 0x245c8948: // 48 89 5c 24 XX : mov QWORD PTR [rsp + XX], rbx
--
2.47.0.1.g59ce1bf855