From 695d90b9b156573d0dafb20afecea09dc9a914f4 Mon Sep 17 00:00:00 2001
From: Guomin Jiang <guomin.jiang@intel.com>
Date: Thu, 26 Mar 2020 14:35:54 +0800
Subject: MdeModulePkg/SdDxe: Check the Token to avoid null pointer

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=2286

Token pointer may be NULL, it should be checked before use it.

Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Hao A Wu <hao.a.wu@intel.com>
Cc: Ray Ni <ray.ni@intel.com>
Signed-off-by: Guomin Jiang <guomin.jiang@intel.com>
Reviewed-by: Hao A Wu <hao.a.wu@intel.com>
---
 MdeModulePkg/Bus/Sd/SdDxe/SdBlockIo.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

(limited to 'MdeModulePkg/Bus')

diff --git a/MdeModulePkg/Bus/Sd/SdDxe/SdBlockIo.c b/MdeModulePkg/Bus/Sd/SdDxe/SdBlockIo.c
index 9f42abe7e2..721f264377 100644
--- a/MdeModulePkg/Bus/Sd/SdDxe/SdBlockIo.c
+++ b/MdeModulePkg/Bus/Sd/SdDxe/SdBlockIo.c
@@ -1367,7 +1367,14 @@ SdEraseBlocks (
     return Status;
   }
 
-  DEBUG ((EFI_D_ERROR, "SdEraseBlocks(): Lba 0x%x BlkNo 0x%x Event %p with %r\n", Lba, BlockNum, Token->Event, Status));
+  DEBUG ((
+    DEBUG_INFO,
+    "SdEraseBlocks(): Lba 0x%x BlkNo 0x%x Event %p with %r\n",
+    Lba,
+    BlockNum,
+    (Token != NULL) ? Token->Event : NULL,
+    Status
+    ));
 
   return Status;
 }
-- 
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