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[edk2] [PATCH] MdeModulePkg SmiHandlerProfile: Fix memory leak in DumpSmiChildContext

Star Zeng posted 1 patch 7 years, 7 months ago
Failed in applying to current master (apply log)
.../Application/SmiHandlerProfileInfo/SmiHandlerProfileInfo.c     | 8 +++++++-
MdeModulePkg/Core/PiSmmCore/SmiHandlerProfile.c                   | 8 +++++++-
2 files changed, 14 insertions(+), 2 deletions(-)
[edk2] [PATCH] MdeModulePkg SmiHandlerProfile: Fix memory leak in DumpSmiChildContext
Posted by Star Zeng 7 years, 7 months ago 
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=530

In DumpSmiChildContext() of SmiHandlerProfile.c and
SmiHandlerProfileInfo.c, the return buffer from
ConvertDevicePathToText() should be freed after used.

Cc: Jiewen Yao <jiewen.yao@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Star Zeng <star.zeng@intel.com>
---
 .../Application/SmiHandlerProfileInfo/SmiHandlerProfileInfo.c     | 8 +++++++-
 MdeModulePkg/Core/PiSmmCore/SmiHandlerProfile.c                   | 8 +++++++-
 2 files changed, 14 insertions(+), 2 deletions(-)

diff --git a/MdeModulePkg/Application/SmiHandlerProfileInfo/SmiHandlerProfileInfo.c b/MdeModulePkg/Application/SmiHandlerProfileInfo/SmiHandlerProfileInfo.c
index 84a1c8ee53b6..2419cd2959a9 100644
--- a/MdeModulePkg/Application/SmiHandlerProfileInfo/SmiHandlerProfileInfo.c
+++ b/MdeModulePkg/Application/SmiHandlerProfileInfo/SmiHandlerProfileInfo.c
@@ -535,6 +535,8 @@ DumpSmiChildContext (
   IN UINTN      ContextSize
   )
 {
+  CHAR16        *Str;
+
   if (CompareGuid (HandlerType, &gEfiSmmSwDispatch2ProtocolGuid)) {
     Print(L" SwSmi=\"0x%x\"", ((EFI_SMM_SW_REGISTER_CONTEXT *)Context)->SwSmiInputValue);
   } else if (CompareGuid (HandlerType, &gEfiSmmSxDispatch2ProtocolGuid)) {
@@ -555,7 +557,11 @@ DumpSmiChildContext (
     Print(L" IoTrapType=\"%a\"", IoTrapTypeToString(((EFI_SMM_IO_TRAP_REGISTER_CONTEXT *)Context)->Type));
   } else if (CompareGuid (HandlerType, &gEfiSmmUsbDispatch2ProtocolGuid)) {
     Print(L" UsbType=\"0x%x\"", UsbTypeToString(((SMI_HANDLER_PROFILE_USB_REGISTER_CONTEXT *)Context)->Type));
-    Print(L" UsbDevicePath=\"%s\"", ConvertDevicePathToText((EFI_DEVICE_PATH_PROTOCOL *)(((SMI_HANDLER_PROFILE_USB_REGISTER_CONTEXT *)Context) + 1), TRUE, TRUE));
+    Str = ConvertDevicePathToText((EFI_DEVICE_PATH_PROTOCOL *)(((SMI_HANDLER_PROFILE_USB_REGISTER_CONTEXT *)Context) + 1), TRUE, TRUE);
+    Print(L" UsbDevicePath=\"%s\"", Str);
+    if (Str != NULL) {
+      FreePool (Str);
+    }
   } else {
     Print(L" Context=\"");
     InternalDumpData (Context, ContextSize);
diff --git a/MdeModulePkg/Core/PiSmmCore/SmiHandlerProfile.c b/MdeModulePkg/Core/PiSmmCore/SmiHandlerProfile.c
index ad3b54ace428..63dcf6e3a1e7 100644
--- a/MdeModulePkg/Core/PiSmmCore/SmiHandlerProfile.c
+++ b/MdeModulePkg/Core/PiSmmCore/SmiHandlerProfile.c
@@ -356,6 +356,8 @@ DumpSmiChildContext (
   IN UINTN      ContextSize
   )
 {
+  CHAR16        *Str;
+
   if (CompareGuid (HandlerType, &gEfiSmmSwDispatch2ProtocolGuid)) {
     DEBUG ((DEBUG_INFO, "  SwSmi - 0x%x\n", ((EFI_SMM_SW_REGISTER_CONTEXT *)Context)->SwSmiInputValue));
   } else if (CompareGuid (HandlerType, &gEfiSmmSxDispatch2ProtocolGuid)) {
@@ -376,7 +378,11 @@ DumpSmiChildContext (
     DEBUG ((DEBUG_INFO, "  IoTrapType - 0x%x\n", ((EFI_SMM_IO_TRAP_REGISTER_CONTEXT *)Context)->Type));
   } else if (CompareGuid (HandlerType, &gEfiSmmUsbDispatch2ProtocolGuid)) {
     DEBUG ((DEBUG_INFO, "  UsbType - 0x%x\n", ((SMI_HANDLER_PROFILE_USB_REGISTER_CONTEXT *)Context)->Type));
-    DEBUG ((DEBUG_INFO, "  UsbDevicePath - %s\n", ConvertDevicePathToText((EFI_DEVICE_PATH_PROTOCOL *)(((SMI_HANDLER_PROFILE_USB_REGISTER_CONTEXT *)Context) + 1), TRUE, TRUE)));
+    Str = ConvertDevicePathToText((EFI_DEVICE_PATH_PROTOCOL *)(((SMI_HANDLER_PROFILE_USB_REGISTER_CONTEXT *)Context) + 1), TRUE, TRUE);
+    DEBUG ((DEBUG_INFO, "  UsbDevicePath - %s\n", Str));
+    if (Str != NULL) {
+      FreePool (Str);
+    }
   } else {
     DEBUG ((DEBUG_INFO, "  Context - "));
     InternalDumpData (Context, ContextSize);
-- 
2.7.0.windows.1

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Re: [edk2] [PATCH] MdeModulePkg SmiHandlerProfile: Fix memory leak in DumpSmiChildContext
Posted by Yao, Jiewen 7 years, 7 months ago 
Reviewed-by: jiewen.yao@intel.com

> -----Original Message-----
> From: Zeng, Star
> Sent: Thursday, May 11, 2017 5:57 PM
> To: edk2-devel@lists.01.org
> Cc: Zeng, Star <star.zeng@intel.com>; Yao, Jiewen <jiewen.yao@intel.com>
> Subject: [PATCH] MdeModulePkg SmiHandlerProfile: Fix memory leak in
> DumpSmiChildContext
> 
> REF: https://bugzilla.tianocore.org/show_bug.cgi?id=530
> 
> In DumpSmiChildContext() of SmiHandlerProfile.c and
> SmiHandlerProfileInfo.c, the return buffer from
> ConvertDevicePathToText() should be freed after used.
> 
> Cc: Jiewen Yao <jiewen.yao@intel.com>
> Contributed-under: TianoCore Contribution Agreement 1.0
> Signed-off-by: Star Zeng <star.zeng@intel.com>
> ---
>  .../Application/SmiHandlerProfileInfo/SmiHandlerProfileInfo.c     | 8
> +++++++-
>  MdeModulePkg/Core/PiSmmCore/SmiHandlerProfile.c                   | 8
> +++++++-
>  2 files changed, 14 insertions(+), 2 deletions(-)
> 
> diff --git
> a/MdeModulePkg/Application/SmiHandlerProfileInfo/SmiHandlerProfileInfo.c
> b/MdeModulePkg/Application/SmiHandlerProfileInfo/SmiHandlerProfileInfo.c
> index 84a1c8ee53b6..2419cd2959a9 100644
> ---
> a/MdeModulePkg/Application/SmiHandlerProfileInfo/SmiHandlerProfileInfo.c
> +++
> b/MdeModulePkg/Application/SmiHandlerProfileInfo/SmiHandlerProfileInfo.c
> @@ -535,6 +535,8 @@ DumpSmiChildContext (
>    IN UINTN      ContextSize
>    )
>  {
> +  CHAR16        *Str;
> +
>    if (CompareGuid (HandlerType, &gEfiSmmSwDispatch2ProtocolGuid)) {
>      Print(L" SwSmi=\"0x%x\"", ((EFI_SMM_SW_REGISTER_CONTEXT
> *)Context)->SwSmiInputValue);
>    } else if (CompareGuid (HandlerType, &gEfiSmmSxDispatch2ProtocolGuid)) {
> @@ -555,7 +557,11 @@ DumpSmiChildContext (
>      Print(L" IoTrapType=\"%a\"",
> IoTrapTypeToString(((EFI_SMM_IO_TRAP_REGISTER_CONTEXT
> *)Context)->Type));
>    } else if (CompareGuid (HandlerType, &gEfiSmmUsbDispatch2ProtocolGuid)) {
>      Print(L" UsbType=\"0x%x\"",
> UsbTypeToString(((SMI_HANDLER_PROFILE_USB_REGISTER_CONTEXT
> *)Context)->Type));
> -    Print(L" UsbDevicePath=\"%s\"",
> ConvertDevicePathToText((EFI_DEVICE_PATH_PROTOCOL
> *)(((SMI_HANDLER_PROFILE_USB_REGISTER_CONTEXT *)Context) + 1), TRUE,
> TRUE));
> +    Str = ConvertDevicePathToText((EFI_DEVICE_PATH_PROTOCOL
> *)(((SMI_HANDLER_PROFILE_USB_REGISTER_CONTEXT *)Context) + 1), TRUE,
> TRUE);
> +    Print(L" UsbDevicePath=\"%s\"", Str);
> +    if (Str != NULL) {
> +      FreePool (Str);
> +    }
>    } else {
>      Print(L" Context=\"");
>      InternalDumpData (Context, ContextSize);
> diff --git a/MdeModulePkg/Core/PiSmmCore/SmiHandlerProfile.c
> b/MdeModulePkg/Core/PiSmmCore/SmiHandlerProfile.c
> index ad3b54ace428..63dcf6e3a1e7 100644
> --- a/MdeModulePkg/Core/PiSmmCore/SmiHandlerProfile.c
> +++ b/MdeModulePkg/Core/PiSmmCore/SmiHandlerProfile.c
> @@ -356,6 +356,8 @@ DumpSmiChildContext (
>    IN UINTN      ContextSize
>    )
>  {
> +  CHAR16        *Str;
> +
>    if (CompareGuid (HandlerType, &gEfiSmmSwDispatch2ProtocolGuid)) {
>      DEBUG ((DEBUG_INFO, "  SwSmi - 0x%x\n",
> ((EFI_SMM_SW_REGISTER_CONTEXT *)Context)->SwSmiInputValue));
>    } else if (CompareGuid (HandlerType, &gEfiSmmSxDispatch2ProtocolGuid)) {
> @@ -376,7 +378,11 @@ DumpSmiChildContext (
>      DEBUG ((DEBUG_INFO, "  IoTrapType - 0x%x\n",
> ((EFI_SMM_IO_TRAP_REGISTER_CONTEXT *)Context)->Type));
>    } else if (CompareGuid (HandlerType, &gEfiSmmUsbDispatch2ProtocolGuid)) {
>      DEBUG ((DEBUG_INFO, "  UsbType - 0x%x\n",
> ((SMI_HANDLER_PROFILE_USB_REGISTER_CONTEXT *)Context)->Type));
> -    DEBUG ((DEBUG_INFO, "  UsbDevicePath - %s\n",
> ConvertDevicePathToText((EFI_DEVICE_PATH_PROTOCOL
> *)(((SMI_HANDLER_PROFILE_USB_REGISTER_CONTEXT *)Context) + 1), TRUE,
> TRUE)));
> +    Str = ConvertDevicePathToText((EFI_DEVICE_PATH_PROTOCOL
> *)(((SMI_HANDLER_PROFILE_USB_REGISTER_CONTEXT *)Context) + 1), TRUE,
> TRUE);
> +    DEBUG ((DEBUG_INFO, "  UsbDevicePath - %s\n", Str));
> +    if (Str != NULL) {
> +      FreePool (Str);
> +    }
>    } else {
>      DEBUG ((DEBUG_INFO, "  Context - "));
>      InternalDumpData (Context, ContextSize);
> --
> 2.7.0.windows.1

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