On Thu, Apr 13, 2017 at 08:29:01AM +0100, Ard Biesheuvel wrote:
On 12 April 2017 at 21:47, Leif Lindholm leif.lindholm@linaro.org wrote:
Fix a case where MarvellYukonDriverStart attempted to free a buffer before it was allocated.
Fix another case where the function returned without freeing the same buffer. Also correct the error message for that case, which was copied verbatim from the preceding if-statement.
Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Leif Lindholm leif.lindholm@linaro.org
Drivers/Net/MarvellYukonDxe/DriverBinding.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/Drivers/Net/MarvellYukonDxe/DriverBinding.c b/Drivers/Net/MarvellYukonDxe/DriverBinding.c index 947d738b10..cbe8ad34e4 100644 --- a/Drivers/Net/MarvellYukonDxe/DriverBinding.c +++ b/Drivers/Net/MarvellYukonDxe/DriverBinding.c @@ -127,7 +127,6 @@ MarvellYukonDriverStart (
if (EFI_ERROR (Status)) { DEBUG ((EFI_D_ERROR, "Marvell Yukon: OpenProtocol: EFI_PCI_IO_PROTOCOL ERROR Status = %r\n", Status));
- gBS->FreePool (YukonDriver); return Status; }
@@ -156,7 +155,8 @@ MarvellYukonDriverStart ( }
if (ScData->msk_if[Port] == NULL) {
DEBUG ((DEBUG_ERROR, "Marvell Yukon: AllocatePool() failed with Status = %r\n", EFI_BAD_BUFFER_SIZE));
DEBUG ((DEBUG_ERROR, "Marvell Yukon: invalid buffer size\n"));gBS->FreePool (YukonDriver); return EFI_BAD_BUFFER_SIZE;Wouldn't it make much more sense to move this test above the AllocatePool() ?
You're not wrong.
How about this?:
From 977ad2b9b4ae02c2e1995279bd49c02f86ccd10a Mon Sep 17 00:00:00 2001
From: Leif Lindholm leif.lindholm@linaro.org Date: Wed, 12 Apr 2017 15:23:47 +0100 Subject: [PATCH] Drivers: MarvellYukonDxe driver binding fixes
Fix a case where MarvellYukonDriverStart attempted to free a buffer before it was allocated.
Move another error case which wasn't freeing the same buffer before returning. Also correct the error message for that case, which was copied verbatim from the preceding if-statement.
Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Leif Lindholm leif.lindholm@linaro.org --- Drivers/Net/MarvellYukonDxe/DriverBinding.c | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-)
diff --git a/Drivers/Net/MarvellYukonDxe/DriverBinding.c b/Drivers/Net/MarvellYukonDxe/DriverBinding.c index 947d738..0abc94e 100644 --- a/Drivers/Net/MarvellYukonDxe/DriverBinding.c +++ b/Drivers/Net/MarvellYukonDxe/DriverBinding.c @@ -127,7 +127,6 @@ MarvellYukonDriverStart (
if (EFI_ERROR (Status)) { DEBUG ((EFI_D_ERROR, "Marvell Yukon: OpenProtocol: EFI_PCI_IO_PROTOCOL ERROR Status = %r\n", Status)); - gBS->FreePool (YukonDriver); return Status; }
@@ -146,6 +145,10 @@ MarvellYukonDriverStart ( }
for (Port = 0; Port < ScData->msk_num_port; Port++) { + if (ScData->msk_if[Port] == NULL) { + DEBUG ((DEBUG_ERROR, "Marvell Yukon: invalid buffer size\n")); + return EFI_BAD_BUFFER_SIZE; + }
Status = gBS->AllocatePool (EfiBootServicesData, sizeof (YUKON_DRIVER), @@ -155,11 +158,6 @@ MarvellYukonDriverStart ( return Status; }
- if (ScData->msk_if[Port] == NULL) { - DEBUG ((DEBUG_ERROR, "Marvell Yukon: AllocatePool() failed with Status = %r\n", EFI_BAD_BUFFER_SIZE)); - return EFI_BAD_BUFFER_SIZE; - } - gBS->SetMem (YukonDriver, sizeof (YUKON_DRIVER), 0); EfiInitializeLock (&YukonDriver->Lock, TPL_NOTIFY);