From 22e54af238440a56a7f6b49b34e87250d958bc1e Mon Sep 17 00:00:00 2001
From: Dean Lee <deanlee3@gmail.com>
Date: Sat, 19 Jul 2025 00:21:46 +0800
Subject: [PATCH] cabana: fix bit mask calculation bug (#35755)

Fix bit mask calculation bug
---
 tools/cabana/dbc/dbc.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/cabana/dbc/dbc.cc b/tools/cabana/dbc/dbc.cc
index e9c869fce7..9b0de92218 100644
--- a/tools/cabana/dbc/dbc.cc
+++ b/tools/cabana/dbc/dbc.cc
@@ -109,7 +109,7 @@ void cabana::Msg::update() {
 
       mask[i] |= ((1ULL << sz) - 1) << shift;
 
-      bits -= size;
+      bits -= sz;
       i = sig->is_little_endian ? i - 1 : i + 1;
     }
   }