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From: Supreeth Venkatesh <supreeth.venkatesh@arm.com>
To: Eric Jin <eric.jin@intel.com>, edk2-devel@lists.01.org
Cc: Jiaxin Wu <jiaxin.wu@intel.com>
Subject: Re: [PATCH] uefi-sct/SctPkg: Fix the Possible numeric underflow
Date: Mon, 15 Oct 2018 03:20:27 +0100	[thread overview]
Message-ID: <878ac949-836a-6fd4-77dc-df28851034b0@arm.com> (raw)
In-Reply-To: <20181013162717.11656-1-eric.jin@intel.com>

Reviewed-by: Supreeth Venkatesh <supreeth.venkatesh@arm.com>


On 10/13/2018 05:27 PM, Eric Jin wrote:
> Possible numeric underflow when calculating the starting LBA for ReadBlocks_Func test
>
> Cc: Supreeth Venkatesh <supreeth.venkatesh@arm.com>
> Cc: Jiaxin Wu <jiaxin.wu@intel.com>
> Contributed-under: TianoCore Contribution Agreement 1.1
> Signed-off-by: Eric Jin <eric.jin@intel.com>
> ---
>   .../Protocol/BlockIo/BlackBoxTest/BlockIoBBTestFunction.c   | 6 +++++-
>   .../Protocol/BlockIo/BlackBoxTest/BlockIoBBTestFunction.c   | 6 +++++-
>   2 files changed, 10 insertions(+), 2 deletions(-)
>
> diff --git a/uefi-sct/SctPkg/TestCase/UEFI/EFI/Protocol/BlockIo/BlackBoxTest/BlockIoBBTestFunction.c b/uefi-sct/SctPkg/TestCase/UEFI/EFI/Protocol/BlockIo/BlackBoxTest/BlockIoBBTestFunction.c
> index 847ff9cb..e25743b7 100644
> --- a/uefi-sct/SctPkg/TestCase/UEFI/EFI/Protocol/BlockIo/BlackBoxTest/BlockIoBBTestFunction.c
> +++ b/uefi-sct/SctPkg/TestCase/UEFI/EFI/Protocol/BlockIo/BlackBoxTest/BlockIoBBTestFunction.c
> @@ -1,7 +1,7 @@
>   /** @file
>   
>     Copyright 2006 - 2016 Unified EFI, Inc.<BR>
> -  Copyright (c) 2010 - 2016, Intel Corporation. All rights reserved.<BR>
> +  Copyright (c) 2010 - 2018, Intel Corporation. All rights reserved.<BR>
>   
>     This program and the accompanying materials
>     are licensed and made available under the terms and conditions of the BSD License
> @@ -316,9 +316,13 @@ BBTestReadBlocksFunctionAutoTest (
>             NewLba = IndexJ;
>           } else if (IndexJ < 2 * MAX_DIFFERENT_LBA_FOR_TEST) {
>             // from (LastBlock - MAX_DIFFERENT_LBA_FOR_TEST - MAX_DIFFERENT_BUFFERSIZE_FOR_TEST)  to (LastBlock - MAX_DIFFERENT_BUFFERSIZE_FOR_TEST)
> +          if (LastBlock < MAX_DIFFERENT_LBA_FOR_TEST + MAX_DIFFERENT_BUFFERSIZE_FOR_TEST)
> +            continue;
>             NewLba = IndexJ + LastBlock - 2 * MAX_DIFFERENT_LBA_FOR_TEST - MAX_DIFFERENT_BUFFERSIZE_FOR_TEST;
>           } else {
>             // from (LastBlock/2 - MAX_DIFFERENT_LBA_FOR_TEST/2) to (LastBlock/2 + MAX_DIFFERENT_LBA_FOR_TEST/2)
> +          if (LastBlock < MAX_DIFFERENT_LBA_FOR_TEST)
> +            continue;
>             NewLba = IndexJ - 2 * MAX_DIFFERENT_LBA_FOR_TEST + (SctDivU64x32 (LastBlock, 2, &Remainder) - MAX_DIFFERENT_LBA_FOR_TEST / 2);
>           }
>   
> diff --git a/uefi-sct/SctPkg/TestCase/UEFI/IHV/Protocol/BlockIo/BlackBoxTest/BlockIoBBTestFunction.c b/uefi-sct/SctPkg/TestCase/UEFI/IHV/Protocol/BlockIo/BlackBoxTest/BlockIoBBTestFunction.c
> index 2590c035..e8d4295e 100644
> --- a/uefi-sct/SctPkg/TestCase/UEFI/IHV/Protocol/BlockIo/BlackBoxTest/BlockIoBBTestFunction.c
> +++ b/uefi-sct/SctPkg/TestCase/UEFI/IHV/Protocol/BlockIo/BlackBoxTest/BlockIoBBTestFunction.c
> @@ -1,7 +1,7 @@
>   /** @file
>   
>     Copyright 2006 - 2016 Unified EFI, Inc.<BR>
> -  Copyright (c) 2010 - 2016, Intel Corporation. All rights reserved.<BR>
> +  Copyright (c) 2010 - 2018, Intel Corporation. All rights reserved.<BR>
>   
>     This program and the accompanying materials
>     are licensed and made available under the terms and conditions of the BSD License
> @@ -316,9 +316,13 @@ BBTestReadBlocksFunctionAutoTest (
>             NewLba = IndexJ;
>           } else if (IndexJ < 2 * MAX_DIFFERENT_LBA_FOR_TEST) {
>             // from (LastBlock - MAX_DIFFERENT_LBA_FOR_TEST - MAX_DIFFERENT_BUFFERSIZE_FOR_TEST)  to (LastBlock - MAX_DIFFERENT_BUFFERSIZE_FOR_TEST)
> +          if (LastBlock < MAX_DIFFERENT_LBA_FOR_TEST + MAX_DIFFERENT_BUFFERSIZE_FOR_TEST)
> +            continue;
>             NewLba = IndexJ + LastBlock - 2 * MAX_DIFFERENT_LBA_FOR_TEST - MAX_DIFFERENT_BUFFERSIZE_FOR_TEST;
>           } else {
>             // from (LastBlock/2 - MAX_DIFFERENT_LBA_FOR_TEST/2) to (LastBlock/2 + MAX_DIFFERENT_LBA_FOR_TEST/2)
> +          if (LastBlock < MAX_DIFFERENT_LBA_FOR_TEST)
> +            continue;
>             NewLba = IndexJ - 2 * MAX_DIFFERENT_LBA_FOR_TEST + (SctDivU64x32 (LastBlock, 2, &Remainder) - MAX_DIFFERENT_LBA_FOR_TEST / 2);
>           }
>   



  reply	other threads:[~2018-10-16  9:48 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-10-13 16:27 [PATCH] uefi-sct/SctPkg: Fix the Possible numeric underflow Eric Jin
2018-10-15  2:20 ` Supreeth Venkatesh [this message]
2018-10-15 13:09   ` Supreeth Venkatesh

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