From: "Kun Qin" <kuqin12@gmail.com>
To: devel@edk2.groups.io
Cc: Jian J Wang <jian.j.wang@intel.com>,
Liming Gao <gaoliming@byosoft.com.cn>,
Hao A Wu <hao.a.wu@intel.com>,
Bret Barkelew <Bret.Barkelew@microsoft.com>,
Michael Kubacki <michael.kubacki@microsoft.com>
Subject: [PATCH v2 1/6] MdeModulePkg: VariableSmmRuntimeDxe: Fix Variable Policy Message Length
Date: Mon, 20 Dec 2021 17:33:29 -0800 [thread overview]
Message-ID: <20211221013334.1751-2-kuqin12@gmail.com> (raw)
In-Reply-To: <20211221013334.1751-1-kuqin12@gmail.com>
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3709
In EDKII implementation of variable policy, the DXE runtime agent would
communicate to MM to disable, register or query policies. However, these
operations populate the value of MessageLength that includes communicate
header to include MM communicate header, which mismatches with the
description of PI specification.
This fix will correct the MessageLength field calculation to exclude
the size of MM_COMMUNICATE_HEADER.
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Liming Gao <gaoliming@byosoft.com.cn>
Cc: Hao A Wu <hao.a.wu@intel.com>
Cc: Bret Barkelew <Bret.Barkelew@microsoft.com>
Cc: Michael Kubacki <michael.kubacki@microsoft.com>
Signed-off-by: Kun Qin <kuqin12@gmail.com>
---
Notes:
v2:
- No review, no updates
MdeModulePkg/Universal/Variable/RuntimeDxe/VariablePolicySmmDxe.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/MdeModulePkg/Universal/Variable/RuntimeDxe/VariablePolicySmmDxe.c b/MdeModulePkg/Universal/Variable/RuntimeDxe/VariablePolicySmmDxe.c
index 672a2293bcb1..b2094fbcd6ea 100644
--- a/MdeModulePkg/Universal/Variable/RuntimeDxe/VariablePolicySmmDxe.c
+++ b/MdeModulePkg/Universal/Variable/RuntimeDxe/VariablePolicySmmDxe.c
@@ -89,7 +89,7 @@ ProtocolDisableVariablePolicy (
CommHeader = mMmCommunicationBuffer;
PolicyHeader = (VAR_CHECK_POLICY_COMM_HEADER *)&CommHeader->Data;
CopyGuid (&CommHeader->HeaderGuid, &gVarCheckPolicyLibMmiHandlerGuid);
- CommHeader->MessageLength = BufferSize;
+ CommHeader->MessageLength = BufferSize - OFFSET_OF (EFI_MM_COMMUNICATE_HEADER, Data);
PolicyHeader->Signature = VAR_CHECK_POLICY_COMM_SIG;
PolicyHeader->Revision = VAR_CHECK_POLICY_COMM_REVISION;
PolicyHeader->Command = VAR_CHECK_POLICY_COMMAND_DISABLE;
@@ -138,7 +138,7 @@ ProtocolIsVariablePolicyEnabled (
PolicyHeader = (VAR_CHECK_POLICY_COMM_HEADER *)&CommHeader->Data;
CommandParams = (VAR_CHECK_POLICY_COMM_IS_ENABLED_PARAMS *)(PolicyHeader + 1);
CopyGuid (&CommHeader->HeaderGuid, &gVarCheckPolicyLibMmiHandlerGuid);
- CommHeader->MessageLength = BufferSize;
+ CommHeader->MessageLength = BufferSize - OFFSET_OF (EFI_MM_COMMUNICATE_HEADER, Data);
PolicyHeader->Signature = VAR_CHECK_POLICY_COMM_SIG;
PolicyHeader->Revision = VAR_CHECK_POLICY_COMM_REVISION;
PolicyHeader->Command = VAR_CHECK_POLICY_COMMAND_IS_ENABLED;
@@ -213,7 +213,7 @@ ProtocolRegisterVariablePolicy (
PolicyHeader = (VAR_CHECK_POLICY_COMM_HEADER *)&CommHeader->Data;
PolicyBuffer = (VOID *)(PolicyHeader + 1);
CopyGuid (&CommHeader->HeaderGuid, &gVarCheckPolicyLibMmiHandlerGuid);
- CommHeader->MessageLength = BufferSize;
+ CommHeader->MessageLength = BufferSize - OFFSET_OF (EFI_MM_COMMUNICATE_HEADER, Data);
PolicyHeader->Signature = VAR_CHECK_POLICY_COMM_SIG;
PolicyHeader->Revision = VAR_CHECK_POLICY_COMM_REVISION;
PolicyHeader->Command = VAR_CHECK_POLICY_COMMAND_REGISTER;
@@ -270,7 +270,7 @@ DumpVariablePolicyHelper (
PolicyHeader = (VAR_CHECK_POLICY_COMM_HEADER *)&CommHeader->Data;
CommandParams = (VAR_CHECK_POLICY_COMM_DUMP_PARAMS *)(PolicyHeader + 1);
CopyGuid (&CommHeader->HeaderGuid, &gVarCheckPolicyLibMmiHandlerGuid);
- CommHeader->MessageLength = BufferSize;
+ CommHeader->MessageLength = BufferSize - OFFSET_OF (EFI_MM_COMMUNICATE_HEADER, Data);
PolicyHeader->Signature = VAR_CHECK_POLICY_COMM_SIG;
PolicyHeader->Revision = VAR_CHECK_POLICY_COMM_REVISION;
PolicyHeader->Command = VAR_CHECK_POLICY_COMMAND_DUMP;
@@ -397,7 +397,7 @@ ProtocolLockVariablePolicy (
CommHeader = mMmCommunicationBuffer;
PolicyHeader = (VAR_CHECK_POLICY_COMM_HEADER *)&CommHeader->Data;
CopyGuid (&CommHeader->HeaderGuid, &gVarCheckPolicyLibMmiHandlerGuid);
- CommHeader->MessageLength = BufferSize;
+ CommHeader->MessageLength = BufferSize - OFFSET_OF (EFI_MM_COMMUNICATE_HEADER, Data);
PolicyHeader->Signature = VAR_CHECK_POLICY_COMM_SIG;
PolicyHeader->Revision = VAR_CHECK_POLICY_COMM_REVISION;
PolicyHeader->Command = VAR_CHECK_POLICY_COMMAND_LOCK;
--
2.32.0.windows.1
next prev parent reply other threads:[~2021-12-21 1:34 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-21 1:33 [PATCH v2 0/6] MM communicate functionality in variable policy Kun Qin
2021-12-21 1:33 ` Kun Qin [this message]
2022-01-11 1:18 ` 回复: [edk2-devel] [PATCH v2 1/6] MdeModulePkg: VariableSmmRuntimeDxe: Fix Variable Policy Message Length gaoliming
2021-12-21 1:33 ` [PATCH v2 2/6] MdePkg: MmCommunication2: Update MM communicate2 function description Kun Qin
2022-01-04 3:22 ` 回复: [edk2-devel] " gaoliming
2021-12-21 1:33 ` [PATCH v2 3/6] ArmPkg: MmCommunicationDxe: MM communicate function argument attributes Kun Qin
2021-12-21 1:33 ` [PATCH v2 4/6] ArmPkg: MmCommunicationDxe: Update MM communicate `CommBuffer**` checks Kun Qin
2021-12-21 1:33 ` [PATCH v2 5/6] ArmPkg: MmCommunicationDxe: Update MM communicate `CommSize` check Kun Qin
2021-12-21 1:33 ` [PATCH v2 6/6] ArmPkg: MmCommunicationDxe: Update MM communicate `MessageLength` check Kun Qin
2022-01-18 18:40 ` [edk2-devel] [PATCH v2 0/6] MM communicate functionality in variable policy Kun Qin
2022-01-18 22:04 ` Rebecca Cran
2022-01-18 22:06 ` Kun Qin
2022-01-19 7:59 ` Sami Mujawar
2022-01-19 9:37 ` Sami Mujawar
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-list from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20211221013334.1751-2-kuqin12@gmail.com \
--to=devel@edk2.groups.io \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox