qemurunner: Simplify binary data handling

I have concerns that bad timing of the flow of data from the logger
might corrupt the output due to the way binary strings are handled
in qemurunner.

This simplifies the code to do the same thing it did before but much
more safely.

(From OE-Core rev: 20bc247316ab915465a4b1add6d09b48e07202ac)

(From OE-Core rev: 84f801e44f4b5ba65489a3a418e5f699abccd003)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
(cherry picked from commit 1e87283e92a2765bb5d54d17138b208bc395953b)
Signed-off-by: Armin Kuster <akuster808@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Signed-off-by: Armin Kuster <akuster808@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 8 insertions, 12 deletions

diff --git a/meta/lib/oeqa/utils/qemurunner.py b/meta/lib/oeqa/utils/qemurunner.py
index 7ca9f1c736..360aa3fc37 100644
--- a/meta/lib/oeqa/utils/qemurunner.py
+++ b/meta/lib/oeqa/utils/qemurunner.py
@@ -274,7 +274,7 @@ class QemuRunner:
         reachedlogin = False
         stopread = False
         qemusock = None
-        bootlog = ''
+        bootlog = b''
         data = b''
         while time.time() < endtime and not stopread:
             try:
@@ -291,17 +291,13 @@ class QemuRunner:
                 else:
                     data = data + sock.recv(1024)
                     if data:
-                        try:
-                            data = data.decode("utf-8", errors="surrogateescape")
-                            bootlog += data
-                            data = b''
-                            if re.search(".* login:", bootlog):
-                                self.server_socket = qemusock
-                                stopread = True
-                                reachedlogin = True
-                                self.logger.debug("Reached login banner")
-                        except UnicodeDecodeError:
-                            continue
+                        bootlog += data
+                        data = b''
+                        if b' login:' in bootlog:
+                            self.server_socket = qemusock
+                            stopread = True
+                            reachedlogin = True
+                            self.logger.debug("Reached login banner")
                     else:
                         socklist.remove(sock)
                         sock.close()