1 files changed, 9 insertions, 3 deletions

diff --git a/bitbake/bin/bitbake-worker b/bitbake/bin/bitbake-worker
index 577651386f..e8073f2ac3 100755
--- a/bitbake/bin/bitbake-worker
+++ b/bitbake/bin/bitbake-worker
@@ -237,9 +237,11 @@ def fork_off_task(cfg, data, databuilder, workerdata, extraconfigdata, runtask):
             # Let SIGHUP exit as SIGTERM
             signal.signal(signal.SIGHUP, sigterm_handler)
 
-            # No stdin
-            newsi = os.open(os.devnull, os.O_RDWR)
-            os.dup2(newsi, sys.stdin.fileno())
+            # No stdin & stdout
+            # stdout is used as a status report channel and must not be used by child processes.
+            dumbio = os.open(os.devnull, os.O_RDWR)
+            os.dup2(dumbio, sys.stdin.fileno())
+            os.dup2(dumbio, sys.stdout.fileno())
 
             if umask is not None:
                 os.umask(umask)
@@ -305,6 +307,10 @@ def fork_off_task(cfg, data, databuilder, workerdata, extraconfigdata, runtask):
                 if not quieterrors:
                     logger.critical(traceback.format_exc())
                 os._exit(1)
+
+            sys.stdout.flush()
+            sys.stderr.flush()
+
             try:
                 if dry_run:
                     return 0