01/03: [NTOS:PS] Check for rundown success in PsReferenceProcessFilePointer. CID 514553

[Thomas Faber]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=5c52ded05fceddb392ed33...

commit 5c52ded05fceddb392ed33eecc8ad693a96332f9
Author:     Thomas Faber [e-mail]
AuthorDate: Fri Jan 26 13:45:53 2018 +0100
Commit:     Thomas Faber [e-mail]
CommitDate: Sun Jan 28 10:48:19 2018 +0100

[NTOS:PS] Check for rundown success in PsReferenceProcessFilePointer. CID 514553
---
 ntoskrnl/ps/query.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/ntoskrnl/ps/query.c b/ntoskrnl/ps/query.c
index 2c492b654a..ad281e63c0 100644
--- a/ntoskrnl/ps/query.c
+++ b/ntoskrnl/ps/query.c
@@ -28,7 +28,10 @@ PsReferenceProcessFilePointer(IN PEPROCESS Process,
     PAGED_CODE();

/* Lock the process */
-    ExAcquireRundownProtection(&Process->RundownProtect);
+    if (!ExAcquireRundownProtection(&Process->RundownProtect))
+    {
+        return STATUS_PROCESS_IS_TERMINATING;
+    }

/* Get the section */
     Section = Process->SectionObject;