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From: Star Zeng <star.zeng@intel.com>
To: edk2-devel@lists.01.org
Cc: Star Zeng <star.zeng@intel.com>, Ruiyu Ni <ruiyu.ni@intel.com>,
	Hao Wu <hao.a.wu@intel.com>
Subject: [PATCH] SourceLevelDebugPkg DebugUsb3: Check mUsb3Instance before dereferencing it
Date: Fri,  9 Feb 2018 10:45:13 +0800	[thread overview]
Message-ID: <1518144314-18356-1-git-send-email-star.zeng@intel.com> (raw)

Cc: Ruiyu Ni <ruiyu.ni@intel.com>
Cc: Hao Wu <hao.a.wu@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Star Zeng <star.zeng@intel.com>
---
 .../Library/DebugCommunicationLibUsb3/DebugCommunicationLibUsb3Dxe.c    | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/SourceLevelDebugPkg/Library/DebugCommunicationLibUsb3/DebugCommunicationLibUsb3Dxe.c b/SourceLevelDebugPkg/Library/DebugCommunicationLibUsb3/DebugCommunicationLibUsb3Dxe.c
index 1582b9a8d6de..29cec56f39dc 100644
--- a/SourceLevelDebugPkg/Library/DebugCommunicationLibUsb3/DebugCommunicationLibUsb3Dxe.c
+++ b/SourceLevelDebugPkg/Library/DebugCommunicationLibUsb3/DebugCommunicationLibUsb3Dxe.c
@@ -443,7 +443,7 @@ DebugCommunicationUsb3DxeConstructor (
   }
 
 Done:
-  if (mUsb3Instance->Ready && (mUsb3Instance->PciIoEvent == 0)) {
+  if ((mUsb3Instance != NULL) && mUsb3Instance->Ready && (mUsb3Instance->PciIoEvent == 0)) {
     Status = Usb3NamedEventListen (
                &gEfiPciIoProtocolGuid,
                TPL_NOTIFY,
-- 
2.7.0.windows.1



             reply	other threads:[~2018-02-09  2:39 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-02-09  2:45 Star Zeng [this message]
2018-02-09  2:54 ` [PATCH] SourceLevelDebugPkg DebugUsb3: Check mUsb3Instance before dereferencing it Wu, Hao A

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