Re: [EXTERNAL] [edk2-devel] [PATCH v1 1/1] MdeModulePkg/ReportStatusCodeRouter: Update RSC Data on reallocation

["Bret Barkelew" <bret.barkelew@microsoft.com>]

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Reviewed-by: Bret Barkelew <bret.barkelew@microsoft.com>

- Bret

________________________________
From: devel@edk2.groups.io <devel@edk2.groups.io> on behalf of Michael Kubacki via groups.io <michael.kubacki=outlook.com@groups.io>
Sent: Wednesday, April 8, 2020 5:04:47 PM
To: devel@edk2.groups.io <devel@edk2.groups.io>
Cc: Dandan Bi <dandan.bi@intel.com>; Hao A Wu <hao.a.wu@intel.com>; Jian J Wang <jian.j.wang@intel.com>; Kun Qin <Kun.Qin@microsoft.com>; Liming Gao <liming.gao@intel.com>
Subject: [EXTERNAL] [edk2-devel] [PATCH v1 1/1] MdeModulePkg/ReportStatusCodeRouter: Update RSC Data on reallocation

From: Michael Kubacki <michael.kubacki@microsoft.com>

REF:https://nam06.safelinks.protection.outlook.com/?url=https%3A%2F%2Fbugzilla.tianocore.org%2Fshow_bug.cgi%3Fid%3D2670&amp;data=02%7C01%7Cbret.barkelew%40microsoft.com%7C2e4ff7c2044249c511d508d7dc19b4d6%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C637219875272310417&amp;sdata=X3sHY%2FqCF8n17zMZ0FJMAluQODc%2F1gI9WRi%2BmBUfb5Q%3D&amp;reserved=0

The RSC router data buffer may be reallocated when the buffer is nearing
exhaustion (7/8 portion of the buffer used).

While several pointers are updated to point to the newly allocated buffer,
the RscData is not updated. This commit updates the RSC data pointer
to the same offset in the reallocated data buffer.

Cc: Dandan Bi <dandan.bi@intel.com>
Cc: Hao A Wu <hao.a.wu@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Kun Qin <Kun.Qin@microsoft.com>
Cc: Liming Gao <liming.gao@intel.com>
Signed-off-by: Michael Kubacki <michael.kubacki@microsoft.com>
---
 MdeModulePkg/Universal/ReportStatusCodeRouter/RuntimeDxe/ReportStatusCodeRouterRuntimeDxe.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/MdeModulePkg/Universal/ReportStatusCodeRouter/RuntimeDxe/ReportStatusCodeRouterRuntimeDxe.c b/MdeModulePkg/Universal/ReportStatusCodeRouter/RuntimeDxe/ReportStatusCodeRouterRuntimeDxe.c
index 6ca7e180ebb3..82fa2e025466 100644
--- a/MdeModulePkg/Universal/ReportStatusCodeRouter/RuntimeDxe/ReportStatusCodeRouterRuntimeDxe.c
+++ b/MdeModulePkg/Universal/ReportStatusCodeRouter/RuntimeDxe/ReportStatusCodeRouterRuntimeDxe.c
@@ -3,6 +3,7 @@
   and Status Code Runtime Protocol.

   Copyright (c) 2009 - 2018, Intel Corporation. All rights reserved.<BR>
+  Copyright (c) Microsoft Corporation.<BR>
   SPDX-License-Identifier: BSD-2-Clause-Patent

 **/
@@ -286,6 +287,7 @@ ReportDispatcher (
                       );
         if (NewBuffer != NULL) {
           CallbackEntry->EndPointer = (EFI_PHYSICAL_ADDRESS) (UINTN) NewBuffer + (CallbackEntry->EndPointer - CallbackEntry->StatusCodeDataBuffer);
+          RscData = (RSC_DATA_ENTRY *) (UINTN) ((UINTN) NewBuffer + ((UINTN) RscData - CallbackEntry->StatusCodeDataBuffer));
           CallbackEntry->StatusCodeDataBuffer = (EFI_PHYSICAL_ADDRESS) (UINTN) NewBuffer;
           CallbackEntry->BufferSize *= 2;
         }
--
2.16.3.windows.1





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