From 41e7c818d1c7045fe2f0d9af8a55102fde17018a Mon Sep 17 00:00:00 2001
From: =?utf8?q?Herm=C3=A8s=20B=C3=A9lusca-Ma=C3=AFto?=
 <hermes.belusca-maito@reactos.org>
Date: Tue, 11 Jun 2019 22:29:34 +0200
Subject: [PATCH] [NTOS] IoSetHardErrorOrVerifyDevice(): Check whether the IRP
 is not associated with any thread.

---
 ntoskrnl/io/iomgr/util.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/ntoskrnl/io/iomgr/util.c b/ntoskrnl/io/iomgr/util.c
index bd7fdde85dc..95a211d1594 100644
--- a/ntoskrnl/io/iomgr/util.c
+++ b/ntoskrnl/io/iomgr/util.c
@@ -316,6 +316,14 @@ NTAPI
 IoSetHardErrorOrVerifyDevice(IN PIRP Irp,
                              IN PDEVICE_OBJECT DeviceObject)
 {
+    /* Ignore in case the IRP is not associated with any thread */
+    if (!Irp->Tail.Overlay.Thread)
+    {
+        DPRINT1("IoSetHardErrorOrVerifyDevice(0x%p, 0x%p): IRP has no thread, ignoring.\n"
+                Irp, DeviceObject);
+        return;
+    }
+
     /* Set the pointer in the IRP */
     Irp->Tail.Overlay.Thread->DeviceToVerify = DeviceObject;
 }
-- 
2.17.1