From de835e9e6e29a6e51d9572c70fed265dc02b993c Mon Sep 17 00:00:00 2001
From: Levi Neely <141506390+lneely@users.noreply.github.com>
Date: Sat, 1 Aug 2026 10:38:56 +0200
Subject: [PATCH] fix QProcess pipe deadlock: drain stdout in run9p while
 waiting

---
 gui/ollie9pclient.cpp | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/gui/ollie9pclient.cpp b/gui/ollie9pclient.cpp
index a5870b2..90c9585 100644
--- a/gui/ollie9pclient.cpp
+++ b/gui/ollie9pclient.cpp
@@ -241,6 +241,15 @@ QByteArray Ollie9pClient::run9p(const QStringList &args)
     QStringList fullArgs = {"-a", serverAddr()};
     fullArgs.append(args);
     proc.start(ninepBin(), fullArgs);
-    proc.waitForFinished(10000);
-    return proc.readAllStandardOutput();
+
+    // Drain output while waiting. The log file can be up to 64KB; if the
+    // parent doesn't read, the child blocks on a full pipe and never exits,
+    // causing "QProcess: Destroyed while process is still running".
+    QByteArray out;
+    while (proc.state() != QProcess::NotRunning) {
+        if (proc.waitForReadyRead(100))
+            out += proc.readAllStandardOutput();
+    }
+    out += proc.readAllStandardOutput();
+    return out;
 }