diff --git a/Ghidra/Debug/Debugger-agent-gdb/src/main/java/agent/gdb/pty/linux/LinuxPty.java b/Ghidra/Debug/Debugger-agent-gdb/src/main/java/agent/gdb/pty/linux/LinuxPty.java
index 562c4eadaa..fd920a1d4f 100644
--- a/Ghidra/Debug/Debugger-agent-gdb/src/main/java/agent/gdb/pty/linux/LinuxPty.java
+++ b/Ghidra/Debug/Debugger-agent-gdb/src/main/java/agent/gdb/pty/linux/LinuxPty.java
@@ -17,7 +17,7 @@ package agent.gdb.pty.linux;
 
 import java.io.IOException;
 
-import com.sun.jna.Memory;
+import com.sun.jna.*;
 import com.sun.jna.ptr.IntByReference;
 
 import agent.gdb.pty.Pty;
@@ -27,6 +27,13 @@ public class LinuxPty implements Pty {
 
 	static final PosixC LIB_POSIX = PosixC.INSTANCE;
 
+	static void checkErr(int result) {
+		if (result < 0) {
+			int errno = Native.getLastError();
+			throw new LastErrorException("[" + errno + "] " + LIB_POSIX.strerror(errno));
+		}
+	}
+
 	private final int aparent;
 	private final int achild;
 	//private final String name;
@@ -40,7 +47,7 @@ public class LinuxPty implements Pty {
 		IntByReference p = new IntByReference();
 		IntByReference c = new IntByReference();
 		Memory n = new Memory(1024);
-		Util.INSTANCE.openpty(p, c, n, null, null);
+		checkErr(Util.INSTANCE.openpty(p, c, n, null, null));
 		return new LinuxPty(p.getValue(), c.getValue(), n.getString(0));
 	}
 
@@ -48,7 +55,6 @@ public class LinuxPty implements Pty {
 		Msg.debug(this, "New Pty: " + name + " at (" + aparent + "," + achild + ")");
 		this.aparent = aparent;
 		this.achild = achild;
-		//this.name = name;
 
 		this.parent = new LinuxPtyParent(aparent);
 		this.child = new LinuxPtyChild(achild, name);
diff --git a/Ghidra/Debug/Debugger-agent-gdb/src/main/java/agent/gdb/pty/linux/PosixC.java b/Ghidra/Debug/Debugger-agent-gdb/src/main/java/agent/gdb/pty/linux/PosixC.java
index c823029d5a..32890a55d7 100644
--- a/Ghidra/Debug/Debugger-agent-gdb/src/main/java/agent/gdb/pty/linux/PosixC.java
+++ b/Ghidra/Debug/Debugger-agent-gdb/src/main/java/agent/gdb/pty/linux/PosixC.java
@@ -27,6 +27,8 @@ import com.sun.jna.platform.linux.LibC;
 public interface PosixC extends LibC {
 	PosixC INSTANCE = Native.load("c", PosixC.class);
 
+	String strerror(int errnum);
+
 	int close(int fd) throws LastErrorException;
 
 	int read(int fd, Pointer buf, int len) throws LastErrorException;
diff --git a/Ghidra/Debug/Debugger-agent-gdb/src/main/java/agent/gdb/pty/linux/Util.java b/Ghidra/Debug/Debugger-agent-gdb/src/main/java/agent/gdb/pty/linux/Util.java
index 5ac94ac5f1..c8f0b44d29 100644
--- a/Ghidra/Debug/Debugger-agent-gdb/src/main/java/agent/gdb/pty/linux/Util.java
+++ b/Ghidra/Debug/Debugger-agent-gdb/src/main/java/agent/gdb/pty/linux/Util.java
@@ -20,20 +20,27 @@ import com.sun.jna.ptr.IntByReference;
 
 /**
  * The interface for linking to {@code openpty} via jna
+ * 
+ * <p>
+ * See the UNIX manual pages
  */
 public interface Util extends Library {
 	Util INSTANCE = Native.load("util", Util.class);
 
 	/**
-	 * See the Linux manual pages
+	 * NOTE: We cannot use {@link LastErrorException} here, because the idiom it applies is not
+	 * correct for errno on UNIX. See https://man7.org/linux/man-pages/man3/errno.3.html, in
+	 * particular:
 	 * 
-	 * @param amaster (purposefully undocumented here)
-	 * @param aslave (purposefully undocumented here)
-	 * @param name (purposefully undocumented here)
-	 * @param termp (purposefully undocumented here)
-	 * @param winp (purposefully undocumented here)
-	 * @return (purposefully undocumented here)
+	 * <blockquote>The value in errno is significant only when the return value of the call
+	 * indicated an error (i.e., -1 from most system calls; -1 or NULL from most library functions);
+	 * a function that succeeds is allowed to change errno.</blockquote>
+	 * 
+	 * This actually happens on our test setup when invoking the native {@code openpty} from a
+	 * Docker container. It returns 0, but sets errno. JNA will incorrectly interpret this as
+	 * failure. Thus, callers to this function must check the return value and handle the error
+	 * manually.
 	 */
-	int openpty(IntByReference amaster, IntByReference aslave, Pointer name,
-			Pointer termp, Pointer winp) throws LastErrorException;
+	int openpty(IntByReference amaster, IntByReference aslave, Pointer name, Pointer termp,
+			Pointer winp);
 }