Silicon/Intel/Tools/FitGen/FitGen.c | 30 +++++++++++++++++++- Silicon/Intel/Tools/FitGen/FitGen.h | 2 +- 2 files changed, 30 insertions(+), 2 deletions(-)
From: Jason1 Lin <jason1.lin@intel.com>
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3922
[Description]
CheckOverlap function would do incorrect split on the BiosModule which not
happen overlap. This would cause incorrect value locate in FIT entry record.
[Condition]
- This BiosModule base address is lower than input address.
- This BiosModule size is smaller than input size.
[Resolution]
- Do the type coversion to UINT64 to prevent overflow when the value shuld be nagative.
- Do the type coversion from UINT64 to INT64 to do the comparsion with possible nagative value.
Signed-off-by: Jason1 Lin <jason1.lin@intel.com>
Cc: Bob Feng <bob.c.feng@intel.com>
Cc: Liming Gao <gaoliming@byosoft.com.cn>
Cc: Yuwei Chen <yuwei.chen@intel.com>
Cc: Dakota Chiang <dakota.chiang@intel.com>
Cc: Vanessa Chuang <vanessa.chuang@intel.com>
---
Silicon/Intel/Tools/FitGen/FitGen.c | 30 +++++++++++++++++++-
Silicon/Intel/Tools/FitGen/FitGen.h | 2 +-
2 files changed, 30 insertions(+), 2 deletions(-)
diff --git a/Silicon/Intel/Tools/FitGen/FitGen.c b/Silicon/Intel/Tools/FitGen/FitGen.c
index 290e688f6e..9d7185dc55 100644
--- a/Silicon/Intel/Tools/FitGen/FitGen.c
+++ b/Silicon/Intel/Tools/FitGen/FitGen.c
@@ -755,12 +755,40 @@ CheckOverlap (
IN UINT32 Address,
IN UINT32 Size
)
+/*++
+Routine Description:
+
+ Check wheather the input address and size is overlap with any BiosModule.
+ If happen overlap, need to be deal with this case.
+ --- +--------------+ <------ BiosModule A Base +--------------+
+ | | | | |
+ | | | BiosModule |
+ | | | A |
+ | | | |
+ BiosModule A +--------------+ <------ [Input] Address ====> +--------------+
+ Size | | |
+ | | | [Input] Size
+ +--------------+ ------ +--------------+
+ | | | BiosModule |
+ | | | | B |
+ --- +--------------+ +--------------+
+
+Arguments:
+
+ Address - The address of the buffer that required to check.
+ Size - The size of the buffer that required to check.
+
+Returns:
+
+ None
+
+--*/
{
INTN Index;
for (Index = 0; Index < (INTN)gFitTableContext.BiosModuleNumber; Index ++) {
if ((gFitTableContext.BiosModule[Index].Address <= Address) &&
- ((gFitTableContext.BiosModule[Index].Size - Size) >= (Address - gFitTableContext.BiosModule[Index].Address))) {
+ ((INT64)((UINT64)gFitTableContext.BiosModule[Index].Size - (UINT64)Size) >= (INT64)((UINT64)Address - (UINT64)gFitTableContext.BiosModule[Index].Address))) {
UINT32 TempSize;
INT32 SubIndex;
diff --git a/Silicon/Intel/Tools/FitGen/FitGen.h b/Silicon/Intel/Tools/FitGen/FitGen.h
index 5add6a8870..4943ee259c 100644
--- a/Silicon/Intel/Tools/FitGen/FitGen.h
+++ b/Silicon/Intel/Tools/FitGen/FitGen.h
@@ -31,7 +31,7 @@ SPDX-License-Identifier: BSD-2-Clause-Patent
// Utility version information
//
#define UTILITY_MAJOR_VERSION 0
-#define UTILITY_MINOR_VERSION 64
+#define UTILITY_MINOR_VERSION 65
#define UTILITY_DATE __DATE__
//
--
2.36.1.windows.1
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Hi Jason, Do you think the code could be more understandable if adding a check for the size? if ((gFitTableContext.BiosModule[Index].Address <= Address) && (gFitTableContext.BiosModule[Index].Size >= Size) && ((gFitTableContext.BiosModule[Index].Size - Size) >= (Address - gFitTableContext.BiosModule[Index].Address))) Thanks, Bob -----Original Message----- From: Lin, Jason1 <jason1.lin@intel.com> Sent: Thursday, May 26, 2022 4:52 PM To: devel@edk2.groups.io Cc: Lin, Jason1 <jason1.lin@intel.com>; Feng, Bob C <bob.c.feng@intel.com>; Gao, Liming <gaoliming@byosoft.com.cn>; Chen, Christine <yuwei.chen@intel.com>; Chiang, Dakota <dakota.chiang@intel.com>; Chuang, Vanessa <vanessa.chuang@intel.com> Subject: [PATCH v1] [edk2-platforms] Silicon/Intel/FitGen: Fix CheckOverlap would do incorrect split BiosModule action in corner case From: Jason1 Lin <jason1.lin@intel.com> REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3922 [Description] CheckOverlap function would do incorrect split on the BiosModule which not happen overlap. This would cause incorrect value locate in FIT entry record. [Condition] - This BiosModule base address is lower than input address. - This BiosModule size is smaller than input size. [Resolution] - Do the type coversion to UINT64 to prevent overflow when the value shuld be nagative. - Do the type coversion from UINT64 to INT64 to do the comparsion with possible nagative value. Signed-off-by: Jason1 Lin <jason1.lin@intel.com> Cc: Bob Feng <bob.c.feng@intel.com> Cc: Liming Gao <gaoliming@byosoft.com.cn> Cc: Yuwei Chen <yuwei.chen@intel.com> Cc: Dakota Chiang <dakota.chiang@intel.com> Cc: Vanessa Chuang <vanessa.chuang@intel.com> --- Silicon/Intel/Tools/FitGen/FitGen.c | 30 +++++++++++++++++++- Silicon/Intel/Tools/FitGen/FitGen.h | 2 +- 2 files changed, 30 insertions(+), 2 deletions(-) diff --git a/Silicon/Intel/Tools/FitGen/FitGen.c b/Silicon/Intel/Tools/FitGen/FitGen.c index 290e688f6e..9d7185dc55 100644 --- a/Silicon/Intel/Tools/FitGen/FitGen.c +++ b/Silicon/Intel/Tools/FitGen/FitGen.c @@ -755,12 +755,40 @@ CheckOverlap ( IN UINT32 Address, IN UINT32 Size )+/*+++Routine Description:++ Check wheather the input address and size is overlap with any BiosModule.+ If happen overlap, need to be deal with this case.+ --- +--------------+ <------ BiosModule A Base +--------------++ | | | | |+ | | | BiosModule |+ | | | A |+ | | | |+ BiosModule A +--------------+ <------ [Input] Address ====> +--------------++ Size | | |+ | | | [Input] Size+ +--------------+ ------ +--------------++ | | | BiosModule |+ | | | | B |+ --- +--------------+ +--------------+++Arguments:++ Address - The address of the buffer that required to check.+ Size - The size of the buffer that required to check.++Returns:++ None++--*/ { INTN Index; for (Index = 0; Index < (INTN)gFitTableContext.BiosModuleNumber; Index ++) { if ((gFitTableContext.BiosModule[Index].Address <= Address) &&- ((gFitTableContext.BiosModule[Index].Size - Size) >= (Address - gFitTableContext.BiosModule[Index].Address))) {+ ((INT64)((UINT64)gFitTableContext.BiosModule[Index].Size - (UINT64)Size) >= (INT64)((UINT64)Address - (UINT64)gFitTableContext.BiosModule[Index].Address))) { UINT32 TempSize; INT32 SubIndex; diff --git a/Silicon/Intel/Tools/FitGen/FitGen.h b/Silicon/Intel/Tools/FitGen/FitGen.h index 5add6a8870..4943ee259c 100644 --- a/Silicon/Intel/Tools/FitGen/FitGen.h +++ b/Silicon/Intel/Tools/FitGen/FitGen.h @@ -31,7 +31,7 @@ SPDX-License-Identifier: BSD-2-Clause-Patent // Utility version information // #define UTILITY_MAJOR_VERSION 0-#define UTILITY_MINOR_VERSION 64+#define UTILITY_MINOR_VERSION 65 #define UTILITY_DATE __DATE__ //-- 2.36.1.windows.1 -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#90205): https://edk2.groups.io/g/devel/message/90205 Mute This Topic: https://groups.io/mt/91354490/1787277 Group Owner: devel+owner@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [importer@patchew.org] -=-=-=-=-=-=-=-=-=-=-=-
Hi Bob, Agree. Check the size first is more readable than do the type conversion. That would be align with the address check. I would send out patch v2 based on this change. Thanks, Jason. -----Original Message----- From: Feng, Bob C <bob.c.feng@intel.com> Sent: Saturday, June 4, 2022 12:08 To: Lin, Jason1 <jason1.lin@intel.com>; devel@edk2.groups.io Cc: Gao, Liming <gaoliming@byosoft.com.cn>; Chen, Christine <yuwei.chen@intel.com>; Chiang, Dakota <dakota.chiang@intel.com>; Chuang, Vanessa <vanessa.chuang@intel.com> Subject: RE: [PATCH v1] [edk2-platforms] Silicon/Intel/FitGen: Fix CheckOverlap would do incorrect split BiosModule action in corner case Hi Jason, Do you think the code could be more understandable if adding a check for the size? if ((gFitTableContext.BiosModule[Index].Address <= Address) && (gFitTableContext.BiosModule[Index].Size >= Size) && ((gFitTableContext.BiosModule[Index].Size - Size) >= (Address - gFitTableContext.BiosModule[Index].Address))) Thanks, Bob -----Original Message----- From: Lin, Jason1 <jason1.lin@intel.com> Sent: Thursday, May 26, 2022 4:52 PM To: devel@edk2.groups.io Cc: Lin, Jason1 <jason1.lin@intel.com>; Feng, Bob C <bob.c.feng@intel.com>; Gao, Liming <gaoliming@byosoft.com.cn>; Chen, Christine <yuwei.chen@intel.com>; Chiang, Dakota <dakota.chiang@intel.com>; Chuang, Vanessa <vanessa.chuang@intel.com> Subject: [PATCH v1] [edk2-platforms] Silicon/Intel/FitGen: Fix CheckOverlap would do incorrect split BiosModule action in corner case From: Jason1 Lin <jason1.lin@intel.com> REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3922 [Description] CheckOverlap function would do incorrect split on the BiosModule which not happen overlap. This would cause incorrect value locate in FIT entry record. [Condition] - This BiosModule base address is lower than input address. - This BiosModule size is smaller than input size. [Resolution] - Do the type coversion to UINT64 to prevent overflow when the value shuld be nagative. - Do the type coversion from UINT64 to INT64 to do the comparsion with possible nagative value. Signed-off-by: Jason1 Lin <jason1.lin@intel.com> Cc: Bob Feng <bob.c.feng@intel.com> Cc: Liming Gao <gaoliming@byosoft.com.cn> Cc: Yuwei Chen <yuwei.chen@intel.com> Cc: Dakota Chiang <dakota.chiang@intel.com> Cc: Vanessa Chuang <vanessa.chuang@intel.com> --- Silicon/Intel/Tools/FitGen/FitGen.c | 30 +++++++++++++++++++- Silicon/Intel/Tools/FitGen/FitGen.h | 2 +- 2 files changed, 30 insertions(+), 2 deletions(-) diff --git a/Silicon/Intel/Tools/FitGen/FitGen.c b/Silicon/Intel/Tools/FitGen/FitGen.c index 290e688f6e..9d7185dc55 100644 --- a/Silicon/Intel/Tools/FitGen/FitGen.c +++ b/Silicon/Intel/Tools/FitGen/FitGen.c @@ -755,12 +755,40 @@ CheckOverlap ( IN UINT32 Address, IN UINT32 Size )+/*+++Routine Description:++ Check wheather the input address and size is overlap with any BiosModule.+ If happen overlap, need to be deal with this case.+ --- +--------------+ <------ BiosModule A Base +--------------++ | | | | |+ | | | BiosModule |+ | | | A |+ | | | |+ BiosModule A +--------------+ <------ [Input] Address ====> +--------------++ Size | | |+ | | | [Input] Size+ +--------------+ ------ +--------------++ | | | BiosModule |+ | | | | B |+ --- +--------------+ +--------------+++Arguments:++ Address - The address of the buffer that required to check.+ Size - The size of the buffer that required to check.++Returns:++ None++--*/ { INTN Index; for (Index = 0; Index < (INTN)gFitTableContext.BiosModuleNumber; Index ++) { if ((gFitTableContext.BiosModule[Index].Address <= Address) &&- ((gFitTableContext.BiosModule[Index].Size - Size) >= (Address - gFitTableContext.BiosModule[Index].Address))) {+ ((INT64)((UINT64)gFitTableContext.BiosModule[Index].Size - (UINT64)Size) >= (INT64)((UINT64)Address - (UINT64)gFitTableContext.BiosModule[Index].Address))) { UINT32 TempSize; INT32 SubIndex; diff --git a/Silicon/Intel/Tools/FitGen/FitGen.h b/Silicon/Intel/Tools/FitGen/FitGen.h index 5add6a8870..4943ee259c 100644 --- a/Silicon/Intel/Tools/FitGen/FitGen.h +++ b/Silicon/Intel/Tools/FitGen/FitGen.h @@ -31,7 +31,7 @@ SPDX-License-Identifier: BSD-2-Clause-Patent // Utility version information // #define UTILITY_MAJOR_VERSION 0-#define UTILITY_MINOR_VERSION 64+#define UTILITY_MINOR_VERSION 65 #define UTILITY_DATE __DATE__ //-- 2.36.1.windows.1 -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#90275): https://edk2.groups.io/g/devel/message/90275 Mute This Topic: https://groups.io/mt/91354490/1787277 Group Owner: devel+owner@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [importer@patchew.org] -=-=-=-=-=-=-=-=-=-=-=-
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