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MdeModulePkg/AcpiTableDxe: consider version mask when removing tables 

Invocations of EFI_ACPI_TABLE_PROTOCOL::UninstallAcpiTable() may
result in a crash when the value of PcdAcpiExposedTableVersions does
not include EFI_ACPI_TABLE_VERSION_1_0B.

The reason is that EFI_ACPI_TABLE_PROTOCOL::InstallAcpiTable() will
only populate the Rsdt1/Rsdt3 pointers when EFI_ACPI_TABLE_VERSION_1_0B
is set, whereas EFI_ACPI_TABLE_PROTOCOL::UninstallAcpiTable() will
invoke PublishTables with EFI_ACPI_TABLE_VERSION_1_0B alawys set,
resulting in a NULL pointer dereference of the Rsdt1/Rsdt3 pointers.

So take PcdAcpiExposedTableVersions into account for UninstallAcpiTable
as well.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Star Zeng <star.zeng@intel.com>
This commit is contained in:
Ard Biesheuvel 2017-03-20 14:51:36 +00:00
parent 7043a90eee
commit f859c6796f
1 changed files with 5 additions and 2 deletions
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7
MdeModulePkg/Universal/Acpi/AcpiTableDxe/AcpiTableProtocol.c
View File

@ -290,24 +290,27 @@ UninstallAcpiTable (
{
EFI_ACPI_TABLE_INSTANCE *AcpiTableInstance;
EFI_STATUS Status;
EFI_ACPI_TABLE_VERSION Version;
//
// Get the instance of the ACPI table protocol
//
AcpiTableInstance = EFI_ACPI_TABLE_INSTANCE_FROM_THIS (This);
Version = PcdGet32 (PcdAcpiExposedTableVersions);
//
// Uninstall the ACPI table
//
Status = RemoveTableFromList (
AcpiTableInstance,
EFI_ACPI_TABLE_VERSION_1_0B | ACPI_TABLE_VERSION_GTE_2_0,
Version,
TableKey
);
if (!EFI_ERROR (Status)) {
Status = PublishTables (
AcpiTableInstance,
EFI_ACPI_TABLE_VERSION_1_0B | ACPI_TABLE_VERSION_GTE_2_0
Version
);
}