Re: [edk2-devel] [PATCH] MinPlatformPkg/TestPointCheckLib: Add check for pointers

["Zhang, Shenglei" <shenglei.zhang@intel.com>]

Hi Nathaniel,

> -----Original Message-----
> From: Desimone, Nathaniel L
> Sent: Saturday, September 14, 2019 6:31 AM
> To: Zhang, Shenglei <shenglei.zhang@intel.com>; devel@edk2.groups.io
> Cc: Kubacki, Michael A <michael.a.kubacki@intel.com>; Chiu, Chasel
> <chasel.chiu@intel.com>; Gao, Liming <liming.gao@intel.com>
> Subject: Re: [edk2-devel] [PATCH] MinPlatformPkg/TestPointCheckLib: Add
> check for pointers
> 
> Hi Shenglei,
> 
> Looking at this patch more closely. There appear to be bugs... please
> see below. Please fix this along with your poor use of semi-colons and
> white-space.
> 
> Thanks,
> 
> Nate
> 
> On 9/12/2019 11:54 AM, Nate DeSimone wrote:
> > Your whitespace doesn't quite match the edk2 coding style guidelines, but
> we can fix that during commit.
> >
> > Reviewed-by: Nate DeSimone <nathaniel.l.desimone@intel.com>
> >
> > -----Original Message-----
> > From: Zhang, Shenglei
> > Sent: Wednesday, September 11, 2019 7:55 PM
> > To: devel@edk2.groups.io
> > Cc: Kubacki, Michael A <michael.a.kubacki@intel.com>; Chiu, Chasel
> <chasel.chiu@intel.com>; Desimone, Nathaniel L
> <nathaniel.l.desimone@intel.com>; Gao, Liming <liming.gao@intel.com>
> > Subject: [PATCH] MinPlatformPkg/TestPointCheckLib: Add check for
> pointers
> >
> > In DxeCheckBootVariable.c, add check for BootOrder and Variable that
> return EFI_NOT_FOUND when they are NULL.
> > In DxeCheckGcd.c, add check for GcdIoMap to ensure it not NULL when
> allocating memory to what it points to.
> >
> > Cc: Michael Kubacki <michael.a.kubacki@intel.com>
> > Cc: Chasel Chiu <chasel.chiu@intel.com>
> > Cc: Nate DeSimone <nathaniel.l.desimone@intel.com>
> > Cc: Liming Gao <liming.gao@intel.com>
> > Signed-off-by: Shenglei Zhang <shenglei.zhang@intel.com>
> > ---
> >
> > v2: Update copyright
> >
> >   .../Test/Library/TestPointCheckLib/DxeCheckBootVariable.c | 8 +++++++-
> >   .../Test/Library/TestPointCheckLib/DxeCheckGcd.c          | 6 ++++--
> >   2 files changed, 11 insertions(+), 3 deletions(-)
> >
> > diff --git
> a/Platform/Intel/MinPlatformPkg/Test/Library/TestPointCheckLib/DxeCheck
> BootVariable.c
> b/Platform/Intel/MinPlatformPkg/Test/Library/TestPointCheckLib/DxeCheck
> BootVariable.c
> > index 85bd5b3d..98130683 100644
> > ---
> a/Platform/Intel/MinPlatformPkg/Test/Library/TestPointCheckLib/DxeCheck
> BootVariable.c
> > +++
> b/Platform/Intel/MinPlatformPkg/Test/Library/TestPointCheckLib/DxeCh
> > +++ eckBootVariable.c
> > @@ -1,6 +1,6 @@
> >   /** @file
> >
> > -Copyright (c) 2017, Intel Corporation. All rights reserved.<BR>
> > +Copyright (c) 2017-2019, Intel Corporation. All rights reserved.<BR>
> >   SPDX-License-Identifier: BSD-2-Clause-Patent
> >
> >   **/
> > @@ -130,6 +130,9 @@ TestPointCheckLoadOptionVariable (
> >     for (ListIndex = 0; ListIndex <
> sizeof(mLoadOptionVariableList)/sizeof(mLoadOptionVariableList[0]);
> ListIndex++) {
> >       UnicodeSPrint (BootOrderName, sizeof(BootOrderName), L"%sOrder",
> mLoadOptionVariableList[ListIndex]);
> >       Status = GetVariable2 (BootOrderName, &gEfiGlobalVariableGuid,
> (VOID **)&BootOrder, &OrderSize);
> > +    if(BootOrder == NULL) {
> > +      return EFI_NOT_FOUND;;
> > +    }
> >       if (EFI_ERROR(Status)) {
> >         continue;
> >       }
> > @@ -222,6 +225,9 @@ TestPointCheckKeyOptionVariable (
> >       for (Index = 0; ; Index++) {
> >         UnicodeSPrint (KeyOptionName, sizeof(KeyOptionName), L"%s%04x",
> mKeyOptionVariableList[ListIndex], Index);
> >         Status = GetVariable2 (KeyOptionName, &gEfiGlobalVariableGuid,
> &Variable, &Size);
> > +      if(Variable == NULL) {
> > +        return EFI_NOT_FOUND;;
> > +      }
> >         if (!EFI_ERROR(Status)) {
> >           DumpKeyOption (KeyOptionName, Variable, Size);
> >         } else {
> > diff --git
> a/Platform/Intel/MinPlatformPkg/Test/Library/TestPointCheckLib/DxeCheck
> Gcd.c
> b/Platform/Intel/MinPlatformPkg/Test/Library/TestPointCheckLib/DxeCheck
> Gcd.c
> > index 82709d44..c90b37f2 100644
> > ---
> a/Platform/Intel/MinPlatformPkg/Test/Library/TestPointCheckLib/DxeCheck
> Gcd.c
> > +++
> b/Platform/Intel/MinPlatformPkg/Test/Library/TestPointCheckLib/DxeCh
> > +++ eckGcd.c
> > @@ -1,6 +1,6 @@
> >   /** @file
> >
> > -Copyright (c) 2017, Intel Corporation. All rights reserved.<BR>
> > +Copyright (c) 2017-2019, Intel Corporation. All rights reserved.<BR>
> >   SPDX-License-Identifier: BSD-2-Clause-Patent
> >
> >   **/
> > @@ -241,7 +241,9 @@ TestPointDumpGcd (
> >         }
> >       }
> >       if (GcdMemoryMap != NULL) {
> > -      *GcdIoMap = AllocateCopyPool (NumberOfDescriptors *
> sizeof(EFI_GCD_IO_SPACE_DESCRIPTOR), IoMap);
> > +      if (GcdIoMap != NULL){
> > +        *GcdIoMap = AllocateCopyPool (NumberOfDescriptors *
> sizeof(EFI_GCD_IO_SPACE_DESCRIPTOR), IoMap);
> > +      }
> 
> GcdIoMap will always be NULL. Please see line 199 of this file. I
> believe your patch is introducing a new bug.

I fail to get your point. Would you explain why GcdIoMap will always be NULL?  It looks like an input
parameter from other place.

Thanks,
Shenglei

> 
> >         *GcdIoMapNumberOfDescriptors = NumberOfDescriptors;
> >       }
> >     }
> > --
> > 2.18.0.windows.1
> >
> >
> > 
> >