diff --git a/patches/chromium/feat_add_data_parameter_to_processsingleton.patch b/patches/chromium/feat_add_data_parameter_to_processsingleton.patch
index f969439c2d..33a8123ec8 100644
--- a/patches/chromium/feat_add_data_parameter_to_processsingleton.patch
+++ b/patches/chromium/feat_add_data_parameter_to_processsingleton.patch
@@ -65,10 +65,10 @@ index 2748dd196fe1f56357348a204e24f0b8a28b97dd..5800dd00b47c657d9e6766f3fc5a3065
  #if BUILDFLAG(IS_WIN)
    bool EscapeVirtualization(const base::FilePath& user_data_dir);
 diff --git a/chrome/browser/process_singleton_posix.cc b/chrome/browser/process_singleton_posix.cc
-index 08cbe32a258bf478f1da0a07064d3e9ef14c44a5..b9f2a43cb90fac4b031a4b4da38d6435a50990d2 100644
+index 12d50032ed589c861f73fa395156e4a6583f852d..7111c4489177d26d69a21aa45fe797cbf9f114e9 100644
 --- a/chrome/browser/process_singleton_posix.cc
 +++ b/chrome/browser/process_singleton_posix.cc
-@@ -614,6 +614,7 @@ class ProcessSingleton::LinuxWatcher
+@@ -619,6 +619,7 @@ class ProcessSingleton::LinuxWatcher
    // |reader| is for sending back ACK message.
    void HandleMessage(const std::string& current_dir,
                       const std::vector<std::string>& argv,
@@ -76,7 +76,7 @@ index 08cbe32a258bf478f1da0a07064d3e9ef14c44a5..b9f2a43cb90fac4b031a4b4da38d6435
                       SocketReader* reader);
  
    // Called when the ProcessSingleton that owns this class is about to be
-@@ -673,13 +674,17 @@ void ProcessSingleton::LinuxWatcher::StartListening(int socket) {
+@@ -678,13 +679,17 @@ void ProcessSingleton::LinuxWatcher::StartListening(int socket) {
  }
  
  void ProcessSingleton::LinuxWatcher::HandleMessage(
@@ -94,19 +94,19 @@ index 08cbe32a258bf478f1da0a07064d3e9ef14c44a5..b9f2a43cb90fac4b031a4b4da38d6435
 +                     base::FilePath(current_dir),
 +                     std::move(additional_data))) {
      // Send back "ACK" message to prevent the client process from starting up.
-     reader->FinishWithACK(kACKToken, std::size(kACKToken) - 1);
+     reader->FinishWithACK(kACKToken);
    } else {
-@@ -727,7 +732,8 @@ void ProcessSingleton::LinuxWatcher::SocketReader::
-     }
-   }
+@@ -714,7 +719,8 @@ void ProcessSingleton::LinuxWatcher::SocketReader::
+   bytes_read_ += ReadFromSocketWithTimeout(
+       fd_, base::span(buf_).subspan(bytes_read_), base::Seconds(0));
  
 -  // Validate the message.  The shortest message is kStartToken\0x\0x
-+  // Validate the message.  The shortest message kStartToken\0\00
++  // Validate the message.  The shortest message is kStartToken\0\00
 +  // The shortest message with additional data is kStartToken\0\00\00\0.
-   const size_t kMinMessageLength = std::size(kStartToken) + 4;
+   const size_t kMinMessageLength = kStartToken.length() + 4;
    if (bytes_read_ < kMinMessageLength) {
      buf_[bytes_read_] = 0;
-@@ -757,10 +763,28 @@ void ProcessSingleton::LinuxWatcher::SocketReader::
+@@ -745,10 +751,28 @@ void ProcessSingleton::LinuxWatcher::SocketReader::
    tokens.erase(tokens.begin());
    tokens.erase(tokens.begin());
  
@@ -136,7 +136,7 @@ index 08cbe32a258bf478f1da0a07064d3e9ef14c44a5..b9f2a43cb90fac4b031a4b4da38d6435
    fd_watch_controller_.reset();
  
    // LinuxWatcher::HandleMessage() is in charge of destroying this SocketReader
-@@ -789,8 +813,10 @@ void ProcessSingleton::LinuxWatcher::SocketReader::FinishWithACK(
+@@ -777,8 +801,10 @@ void ProcessSingleton::LinuxWatcher::SocketReader::FinishWithACK(
  //
  ProcessSingleton::ProcessSingleton(
      const base::FilePath& user_data_dir,
@@ -147,7 +147,7 @@ index 08cbe32a258bf478f1da0a07064d3e9ef14c44a5..b9f2a43cb90fac4b031a4b4da38d6435
        current_pid_(base::GetCurrentProcId()) {
    socket_path_ = user_data_dir.Append(chrome::kSingletonSocketFilename);
    lock_path_ = user_data_dir.Append(chrome::kSingletonLockFilename);
-@@ -911,7 +937,8 @@ ProcessSingleton::NotifyResult ProcessSingleton::NotifyOtherProcessWithTimeout(
+@@ -899,7 +925,8 @@ ProcessSingleton::NotifyResult ProcessSingleton::NotifyOtherProcessWithTimeout(
               sizeof(socket_timeout));
  
    // Found another process, prepare our command line
@@ -157,7 +157,7 @@ index 08cbe32a258bf478f1da0a07064d3e9ef14c44a5..b9f2a43cb90fac4b031a4b4da38d6435
    std::string to_send(kStartToken);
    to_send.push_back(kTokenDelimiter);
  
-@@ -921,11 +948,21 @@ ProcessSingleton::NotifyResult ProcessSingleton::NotifyOtherProcessWithTimeout(
+@@ -909,11 +936,21 @@ ProcessSingleton::NotifyResult ProcessSingleton::NotifyOtherProcessWithTimeout(
    to_send.append(current_dir.value());
  
    const std::vector<std::string>& argv = cmd_line.argv();
@@ -177,7 +177,7 @@ index 08cbe32a258bf478f1da0a07064d3e9ef14c44a5..b9f2a43cb90fac4b031a4b4da38d6435
 +  }
 +
    // Send the message
-   if (!WriteToSocket(socket.fd(), to_send.data(), to_send.length())) {
+   if (!WriteToSocket(socket.fd(), to_send)) {
      // Try to kill the other process, because it might have been dead.
 diff --git a/chrome/browser/process_singleton_win.cc b/chrome/browser/process_singleton_win.cc
 index ae659d84a5ae2f2e87ce288477506575f8d86839..d93c7e8487ab1a2bbb5f56f2ca44868f947e6bfc 100644