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Fvp Base Fixes #10

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See posting on edk2-dev for more details

vchong pushed a commit to linaro-swg/edk2 that referenced this pull request Jun 9, 2015
HiKey: use system partition in the default boot arguments
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These patches should be posted to edk2-devel with git send-email. We can't use pull requests at this time.

@jljusten jljusten closed this Jul 26, 2015
jljusten pushed a commit that referenced this pull request Dec 15, 2015
The open coded access to co-processor #10 to set FPEXC is not supported
by the CLANG assembler, but the architecturally correct VMSR instruction
is not supported by older binutils. So keep the former unless __clang__
is defined.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <[email protected]>
Reviewed-by: Leif Lindholm <[email protected]>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@19282 6f19259b-4bc3-4df7-8a09-765794883524
mdkinney referenced this pull request in mdkinney/edk2 Mar 8, 2016
The open coded access to co-processor #10 to set FPEXC is not supported
by the CLANG assembler, but the architecturally correct VMSR instruction
is not supported by older binutils. So keep the former unless __clang__
is defined.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <[email protected]>
Reviewed-by: Leif Lindholm <[email protected]>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@19282 6f19259b-4bc3-4df7-8a09-765794883524
lersek added a commit to lersek/edk2 that referenced this pull request Apr 25, 2017
Commit bd3fc81 ("ShellPkg/App: Fix memory leak and save resources.",
2016-05-20) added a FreePool() call for Split->SplitStdIn, near end of the
RunSplitCommand(), right after the same shell file was closed with
CloseFile(). The argument was:

> 1) RunSplitCommand() allocates the initial SplitStdOut via
>    CreateFileInterfaceMem(). Free SplitStdIn after the swap to fix
>    the memory leak.

There is no memory leak actually, and the FreePool() call in question
constitutes a double-free:

(a) This is how the handle is established:

    ConvertEfiFileProtocolToShellHandle (
      CreateFileInterfaceMem (Unicode),
      NULL
      );

    CreateFileInterfaceMem() allocates an EFI_FILE_PROTOCOL_MEM object and
    populates it fully. ConvertEfiFileProtocolToShellHandle() allocates
    some administrative structures and links the EFI_FILE_PROTOCOL_MEM
    object into "mFileHandleList".

(b) EFI_SHELL_PROTOCOL.CloseFile() is required to close the
    SHELL_FILE_HANDLE and to release all associated data. Accordingly,
    near the end of RunSplitCommand(), we have:

    EfiShellClose()
      ShellFileHandleRemove()
        //
        // undoes the effects of ConvertEfiFileProtocolToShellHandle()
        //
      ConvertShellHandleToEfiFileProtocol()
        //
        // note that this does not adjust the pointer value; it's a pure
        // type cast
        //
      FileHandleClose()
        FileInterfaceMemClose()
          //
          // tears down EFI_FILE_PROTOCOL_MEM completely, undoing the
          // effects of CreateFileInterfaceMem ()
          //

The FreePool() call added by bd3fc81 conflicts with

  SHELL_FREE_NON_NULL(This);

in FileInterfaceMemClose(), so remove it.

This error can be reproduced for example with:

> Shell> map | more
> 'more' is not recognized as an internal or external command, operable
> program, or script file.

which triggers:

> ASSERT MdeModulePkg/Core/Dxe/Mem/Pool.c(624): CR has Bad Signature

with the following stack dump:

> #0  0x000000007f6dc094 in CpuDeadLoop () at
>     MdePkg/Library/BaseLib/CpuDeadLoop.c:37
> #1  0x000000007f6dd1b4 in DebugAssert (FileName=0x7f6ed9f0
>     "MdeModulePkg/Core/Dxe/Mem/Pool.c", LineNumber=624,
>     Description=0x7f6ed9d8 "CR has Bad Signature") at
>     OvmfPkg/Library/PlatformDebugLibIoPort/DebugLib.c:153
> #2  0x000000007f6d075d in CoreFreePoolI (Buffer=0x7e232c98,
>     PoolType=0x7f6bc1c4) at MdeModulePkg/Core/Dxe/Mem/Pool.c:624
> tianocore#3  0x000000007f6d060e in CoreInternalFreePool (Buffer=0x7e232c98,
>     PoolType=0x7f6bc1c4) at MdeModulePkg/Core/Dxe/Mem/Pool.c:529
> tianocore#4  0x000000007f6d0648 in CoreFreePool (Buffer=0x7e232c98) at
>     MdeModulePkg/Core/Dxe/Mem/Pool.c:552
> tianocore#5  0x000000007d49fbf8 in FreePool (Buffer=0x7e232c98) at
>     MdePkg/Library/UefiMemoryAllocationLib/MemoryAllocationLib.c:818
> tianocore#6  0x000000007d4875c3 in RunSplitCommand (CmdLine=0x7d898398,
>     StdIn=0x0, StdOut=0x0) at ShellPkg/Application/Shell/Shell.c:1813
> tianocore#7  0x000000007d487d59 in ProcessNewSplitCommandLine
>     (CmdLine=0x7d898398) at ShellPkg/Application/Shell/Shell.c:2121
> tianocore#8  0x000000007d488937 in RunShellCommand (CmdLine=0x7e233018,
>     CommandStatus=0x0) at ShellPkg/Application/Shell/Shell.c:2670
> tianocore#9  0x000000007d488b0b in RunCommand (CmdLine=0x7e233018) at
>     ShellPkg/Application/Shell/Shell.c:2732
> tianocore#10 0x000000007d4867c8 in DoShellPrompt () at
>     ShellPkg/Application/Shell/Shell.c:1349
> tianocore#11 0x000000007d48524d in UefiMain (ImageHandle=0x7e24c898,
>     SystemTable=0x7f5b6018) at ShellPkg/Application/Shell/Shell.c:631

Cc: Jaben Carsey <[email protected]>
Cc: Marvin Häuser <[email protected]>
Cc: Qiu Shumin <[email protected]>
Cc: Ruiyu Ni <[email protected]>
Fixes: bd3fc81
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <[email protected]>
lersek added a commit that referenced this pull request Apr 26, 2017
Commit bd3fc81 ("ShellPkg/App: Fix memory leak and save resources.",
2016-05-20) added a FreePool() call for Split->SplitStdIn, near end of the
RunSplitCommand(), right after the same shell file was closed with
CloseFile(). The argument was:

> 1) RunSplitCommand() allocates the initial SplitStdOut via
>    CreateFileInterfaceMem(). Free SplitStdIn after the swap to fix
>    the memory leak.

There is no memory leak actually, and the FreePool() call in question
constitutes a double-free:

(a) This is how the handle is established:

    ConvertEfiFileProtocolToShellHandle (
      CreateFileInterfaceMem (Unicode),
      NULL
      );

    CreateFileInterfaceMem() allocates an EFI_FILE_PROTOCOL_MEM object and
    populates it fully. ConvertEfiFileProtocolToShellHandle() allocates
    some administrative structures and links the EFI_FILE_PROTOCOL_MEM
    object into "mFileHandleList".

(b) EFI_SHELL_PROTOCOL.CloseFile() is required to close the
    SHELL_FILE_HANDLE and to release all associated data. Accordingly,
    near the end of RunSplitCommand(), we have:

    EfiShellClose()
      ShellFileHandleRemove()
        //
        // undoes the effects of ConvertEfiFileProtocolToShellHandle()
        //
      ConvertShellHandleToEfiFileProtocol()
        //
        // note that this does not adjust the pointer value; it's a pure
        // type cast
        //
      FileHandleClose()
        FileInterfaceMemClose()
          //
          // tears down EFI_FILE_PROTOCOL_MEM completely, undoing the
          // effects of CreateFileInterfaceMem ()
          //

The FreePool() call added by bd3fc81 conflicts with

  SHELL_FREE_NON_NULL(This);

in FileInterfaceMemClose(), so remove it.

This error can be reproduced for example with:

> Shell> map | more
> 'more' is not recognized as an internal or external command, operable
> program, or script file.

which triggers:

> ASSERT MdeModulePkg/Core/Dxe/Mem/Pool.c(624): CR has Bad Signature

with the following stack dump:

> #0  0x000000007f6dc094 in CpuDeadLoop () at
>     MdePkg/Library/BaseLib/CpuDeadLoop.c:37
> #1  0x000000007f6dd1b4 in DebugAssert (FileName=0x7f6ed9f0
>     "MdeModulePkg/Core/Dxe/Mem/Pool.c", LineNumber=624,
>     Description=0x7f6ed9d8 "CR has Bad Signature") at
>     OvmfPkg/Library/PlatformDebugLibIoPort/DebugLib.c:153
> #2  0x000000007f6d075d in CoreFreePoolI (Buffer=0x7e232c98,
>     PoolType=0x7f6bc1c4) at MdeModulePkg/Core/Dxe/Mem/Pool.c:624
> #3  0x000000007f6d060e in CoreInternalFreePool (Buffer=0x7e232c98,
>     PoolType=0x7f6bc1c4) at MdeModulePkg/Core/Dxe/Mem/Pool.c:529
> #4  0x000000007f6d0648 in CoreFreePool (Buffer=0x7e232c98) at
>     MdeModulePkg/Core/Dxe/Mem/Pool.c:552
> #5  0x000000007d49fbf8 in FreePool (Buffer=0x7e232c98) at
>     MdePkg/Library/UefiMemoryAllocationLib/MemoryAllocationLib.c:818
> #6  0x000000007d4875c3 in RunSplitCommand (CmdLine=0x7d898398,
>     StdIn=0x0, StdOut=0x0) at ShellPkg/Application/Shell/Shell.c:1813
> #7  0x000000007d487d59 in ProcessNewSplitCommandLine
>     (CmdLine=0x7d898398) at ShellPkg/Application/Shell/Shell.c:2121
> #8  0x000000007d488937 in RunShellCommand (CmdLine=0x7e233018,
>     CommandStatus=0x0) at ShellPkg/Application/Shell/Shell.c:2670
> #9  0x000000007d488b0b in RunCommand (CmdLine=0x7e233018) at
>     ShellPkg/Application/Shell/Shell.c:2732
> #10 0x000000007d4867c8 in DoShellPrompt () at
>     ShellPkg/Application/Shell/Shell.c:1349
> #11 0x000000007d48524d in UefiMain (ImageHandle=0x7e24c898,
>     SystemTable=0x7f5b6018) at ShellPkg/Application/Shell/Shell.c:631

Cc: Jaben Carsey <[email protected]>
Cc: Marvin Häuser <[email protected]>
Cc: Qiu Shumin <[email protected]>
Cc: Ruiyu Ni <[email protected]>
Fixes: bd3fc81
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <[email protected]>
Reviewed-by: Jaben Carsey <[email protected]>
Reviewed-by: Marvin Häuser <[email protected]>
niruiyu pushed a commit that referenced this pull request May 4, 2017
Commit bd3fc81 ("ShellPkg/App: Fix memory leak and save resources.",
2016-05-20) added a FreePool() call for Split->SplitStdIn, near end of the
RunSplitCommand(), right after the same shell file was closed with
CloseFile(). The argument was:

> 1) RunSplitCommand() allocates the initial SplitStdOut via
>    CreateFileInterfaceMem(). Free SplitStdIn after the swap to fix
>    the memory leak.

There is no memory leak actually, and the FreePool() call in question
constitutes a double-free:

(a) This is how the handle is established:

    ConvertEfiFileProtocolToShellHandle (
      CreateFileInterfaceMem (Unicode),
      NULL
      );

    CreateFileInterfaceMem() allocates an EFI_FILE_PROTOCOL_MEM object and
    populates it fully. ConvertEfiFileProtocolToShellHandle() allocates
    some administrative structures and links the EFI_FILE_PROTOCOL_MEM
    object into "mFileHandleList".

(b) EFI_SHELL_PROTOCOL.CloseFile() is required to close the
    SHELL_FILE_HANDLE and to release all associated data. Accordingly,
    near the end of RunSplitCommand(), we have:

    EfiShellClose()
      ShellFileHandleRemove()
        //
        // undoes the effects of ConvertEfiFileProtocolToShellHandle()
        //
      ConvertShellHandleToEfiFileProtocol()
        //
        // note that this does not adjust the pointer value; it's a pure
        // type cast
        //
      FileHandleClose()
        FileInterfaceMemClose()
          //
          // tears down EFI_FILE_PROTOCOL_MEM completely, undoing the
          // effects of CreateFileInterfaceMem ()
          //

The FreePool() call added by bd3fc81 conflicts with

  SHELL_FREE_NON_NULL(This);

in FileInterfaceMemClose(), so remove it.

This error can be reproduced for example with:

> Shell> map | more
> 'more' is not recognized as an internal or external command, operable
> program, or script file.

which triggers:

> ASSERT MdeModulePkg/Core/Dxe/Mem/Pool.c(624): CR has Bad Signature

with the following stack dump:

> #0  0x000000007f6dc094 in CpuDeadLoop () at
>     MdePkg/Library/BaseLib/CpuDeadLoop.c:37
> #1  0x000000007f6dd1b4 in DebugAssert (FileName=0x7f6ed9f0
>     "MdeModulePkg/Core/Dxe/Mem/Pool.c", LineNumber=624,
>     Description=0x7f6ed9d8 "CR has Bad Signature") at
>     OvmfPkg/Library/PlatformDebugLibIoPort/DebugLib.c:153
> #2  0x000000007f6d075d in CoreFreePoolI (Buffer=0x7e232c98,
>     PoolType=0x7f6bc1c4) at MdeModulePkg/Core/Dxe/Mem/Pool.c:624
> #3  0x000000007f6d060e in CoreInternalFreePool (Buffer=0x7e232c98,
>     PoolType=0x7f6bc1c4) at MdeModulePkg/Core/Dxe/Mem/Pool.c:529
> #4  0x000000007f6d0648 in CoreFreePool (Buffer=0x7e232c98) at
>     MdeModulePkg/Core/Dxe/Mem/Pool.c:552
> #5  0x000000007d49fbf8 in FreePool (Buffer=0x7e232c98) at
>     MdePkg/Library/UefiMemoryAllocationLib/MemoryAllocationLib.c:818
> #6  0x000000007d4875c3 in RunSplitCommand (CmdLine=0x7d898398,
>     StdIn=0x0, StdOut=0x0) at ShellPkg/Application/Shell/Shell.c:1813
> #7  0x000000007d487d59 in ProcessNewSplitCommandLine
>     (CmdLine=0x7d898398) at ShellPkg/Application/Shell/Shell.c:2121
> #8  0x000000007d488937 in RunShellCommand (CmdLine=0x7e233018,
>     CommandStatus=0x0) at ShellPkg/Application/Shell/Shell.c:2670
> #9  0x000000007d488b0b in RunCommand (CmdLine=0x7e233018) at
>     ShellPkg/Application/Shell/Shell.c:2732
> #10 0x000000007d4867c8 in DoShellPrompt () at
>     ShellPkg/Application/Shell/Shell.c:1349
> #11 0x000000007d48524d in UefiMain (ImageHandle=0x7e24c898,
>     SystemTable=0x7f5b6018) at ShellPkg/Application/Shell/Shell.c:631

Cc: Jaben Carsey <[email protected]>
Cc: Marvin Häuser <[email protected]>
Cc: Qiu Shumin <[email protected]>
Cc: Ruiyu Ni <[email protected]>
Fixes: bd3fc81
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <[email protected]>
Reviewed-by: Jaben Carsey <[email protected]>
Reviewed-by: Marvin Häuser <[email protected]>
(cherry picked from commit 227fe49)
MrChromebox referenced this pull request in MrChromebox/edk2 Oct 24, 2020
Revert "Enable Testing workflow for PR"
jiaxinwu added a commit to jiaxinwu/edk2 that referenced this pull request Oct 12, 2024
This patch does not impact functionality. It aims to clarify the
synchronization flow between the BSP and APs to enhance code
readability and understanding:

Steps tianocore#6 and tianocore#11 are the basic synchronization requirements for all
cases.

Steps tianocore#1 and tianocore#2 are additional requirements if the
MmCpuSyncModeTradition mode is selected.

Steps tianocore#1, tianocore#2, tianocore#3, tianocore#4, tianocore#5, tianocore#7, tianocore#8, tianocore#9, and tianocore#10 are additional
requirements if the system needs to configure the MTRR.

Steps tianocore#9 and tianocore#10 are additional requirements if the system needs to
support the mSmmDebugAgentSupport.

Signed-off-by: Jiaxin Wu <[email protected]>
jiaxinwu added a commit to jiaxinwu/edk2 that referenced this pull request Oct 12, 2024
This patch does not impact functionality. It aims to clarify the
synchronization flow between the BSP and APs to enhance code
readability and understanding:

Steps tianocore#6 and tianocore#11 are the basic synchronization requirements for all
cases.

Steps tianocore#1 and tianocore#2 are additional requirements if the
MmCpuSyncModeTradition mode is selected.

Steps tianocore#1, tianocore#2, tianocore#3, tianocore#4, tianocore#5, tianocore#7, tianocore#8, tianocore#9, and tianocore#10 are additional
requirements if the system needs to configure the MTRR.

Steps tianocore#9 and tianocore#10 are additional requirements if the system needs to
support the mSmmDebugAgentSupport.

Signed-off-by: Jiaxin Wu <[email protected]>
jiaxinwu added a commit to jiaxinwu/edk2 that referenced this pull request Oct 12, 2024
This patch does not impact functionality. It aims to clarify the
synchronization flow between the BSP and APs to enhance code
readability and understanding:

Steps tianocore#6 and tianocore#11 are the basic synchronization requirements for all
cases.

Steps tianocore#1 is additional requirements if the MmCpuSyncModeTradition
mode is selected.

Steps tianocore#1, tianocore#2, tianocore#3, tianocore#4, tianocore#5, tianocore#7, tianocore#8, tianocore#9, and tianocore#10 are additional
requirements if the system needs to configure the MTRR.

Steps tianocore#9 and tianocore#10 are additional requirements if the system needs to
support the mSmmDebugAgentSupport.

Signed-off-by: Jiaxin Wu <[email protected]>
jiaxinwu added a commit to jiaxinwu/edk2 that referenced this pull request Oct 12, 2024
This patch does not impact functionality. It aims to clarify the
synchronization flow between the BSP and APs to enhance code
readability and understanding:

Steps tianocore#6 and tianocore#11 are the basic synchronization requirements for all
cases.

Steps tianocore#1 is additional requirements if the MmCpuSyncModeTradition
mode is selected.

Steps tianocore#1, tianocore#2, tianocore#3, tianocore#4, tianocore#5, tianocore#7, tianocore#8, tianocore#9, and tianocore#10 are additional
requirements if the system needs to configure the MTRR.

Steps tianocore#9 and tianocore#10 are additional requirements if the system needs to
support the mSmmDebugAgentSupport.

Signed-off-by: Jiaxin Wu <[email protected]>
mergify bot pushed a commit that referenced this pull request Oct 12, 2024
This patch does not impact functionality. It aims to clarify the
synchronization flow between the BSP and APs to enhance code
readability and understanding:

Steps #6 and #11 are the basic synchronization requirements for all
cases.

Steps #1 is additional requirements if the MmCpuSyncModeTradition
mode is selected.

Steps #1, #2, #3, #4, #5, #7, #8, #9, and #10 are additional
requirements if the system needs to configure the MTRR.

Steps #9 and #10 are additional requirements if the system needs to
support the mSmmDebugAgentSupport.

Signed-off-by: Jiaxin Wu <[email protected]>
ishih1 pushed a commit to ishih1/edk2 that referenced this pull request Nov 11, 2024
This patch does not impact functionality. It aims to clarify the
synchronization flow between the BSP and APs to enhance code
readability and understanding:

Steps tianocore#6 and tianocore#11 are the basic synchronization requirements for all
cases.

Steps tianocore#1 is additional requirements if the MmCpuSyncModeTradition
mode is selected.

Steps tianocore#1, tianocore#2, tianocore#3, tianocore#4, tianocore#5, tianocore#7, tianocore#8, tianocore#9, and tianocore#10 are additional
requirements if the system needs to configure the MTRR.

Steps tianocore#9 and tianocore#10 are additional requirements if the system needs to
support the mSmmDebugAgentSupport.

Signed-off-by: Jiaxin Wu <[email protected]>
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3 participants