From 84e0744c28394f0da35dccc4ccc094890d6289f4 Mon Sep 17 00:00:00 2001
From: Bill Zissimopoulos <billziss@navimatics.com>
Date: Wed, 29 Jul 2020 22:51:17 -0700
Subject: [PATCH] sys: FspVolumeTransact: FSP_FSCTL_TRANSACT_INTERNAL

Zero out OutputBuffer on error to avoid confusion for fsext providers.
---
 src/sys/volume.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/sys/volume.c b/src/sys/volume.c
index 2017432e..1922b39d 100644
--- a/src/sys/volume.c
+++ b/src/sys/volume.c
@@ -965,6 +965,7 @@ NTSTATUS FspVolumeTransact(
                 if (0 != InternalBuffer)
                 {
                     ASSERT(FSP_FSCTL_TRANSACT_INTERNAL == ControlCode);
+                    *(PVOID *)OutputBuffer = 0;
                     FspFree(InternalBuffer);
                 }
                 FspIopCompleteCanceledIrp(PendingIrp);