Re: [edk2-devel] [PATCH 2/2] NetworkPkg/HttpDxe: fix driver binding start issue.

["Michael D Kinney" <michael.d.kinney@intel.com>]

Acked-by: Michael D Kinney <michael.d.kinney@intel.com>

> -----Original Message-----
> From: Kasbekar, Saloni <saloni.kasbekar@intel.com>
> Sent: Thursday, July 13, 2023 9:13 AM
> To: Nickle Wang <nicklew@nvidia.com>; devel@edk2.groups.io; Clark-
> williams, Zachary <zachary.clark-williams@intel.com>; Kinney, Michael D
> <michael.d.kinney@intel.com>
> Cc: Abner Chang <abner.chang@amd.com>; Igor Kulchytskyy <igork@ami.com>;
> Nick Ramirez <nramirez@nvidia.com>
> Subject: RE: [edk2-devel] [PATCH 2/2] NetworkPkg/HttpDxe: fix driver
> binding start issue.
> 
> Mike,
> 
> Would you be able to help us merge the patch?
> 
> Thanks,
> Saloni
> 
> -----Original Message-----
> From: Nickle Wang <nicklew@nvidia.com>
> Sent: Wednesday, July 12, 2023 11:54 PM
> To: devel@edk2.groups.io; Kasbekar, Saloni <saloni.kasbekar@intel.com>;
> Clark-williams, Zachary <zachary.clark-williams@intel.com>
> Cc: Abner Chang <abner.chang@amd.com>; Igor Kulchytskyy <igork@ami.com>;
> Nick Ramirez <nramirez@nvidia.com>
> Subject: RE: [edk2-devel] [PATCH 2/2] NetworkPkg/HttpDxe: fix driver
> binding start issue.
> 
> Hi Saloni,
> 
> Could you please help to merge this fix since there is no objection
> during past weeks?
> 
> Thanks,
> Nickle
> 
> > -----Original Message-----
> > From: devel@edk2.groups.io <devel@edk2.groups.io> On Behalf Of Saloni
> > Kasbekar via groups.io
> > Sent: Friday, June 30, 2023 6:28 AM
> > To: Nickle Wang <nicklew@nvidia.com>; devel@edk2.groups.io
> > Cc: Maciej Rabeda <maciej.rabeda@linux.intel.com>; Siyuan Fu
> > <siyuan.fu@intel.com>; Abner Chang <abner.chang@amd.com>; Igor
> > Kulchytskyy <igork@ami.com>; Nick Ramirez <nramirez@nvidia.com>
> > Subject: Re: [edk2-devel] [PATCH 2/2] NetworkPkg/HttpDxe: fix driver
> > binding start issue.
> >
> > External email: Use caution opening links or attachments
> >
> >
> > Hi Nickle,
> >
> > That makes sense. Thanks for the clarification.
> >
> > Reviewed-by: Saloni Kasbekar <saloni.kasbekar@intel.com>
> >
> > Thanks,
> > Saloni
> >
> > -----Original Message-----
> > From: Nickle Wang <nicklew@nvidia.com>
> > Sent: Wednesday, June 28, 2023 3:30 PM
> > To: Kasbekar, Saloni <saloni.kasbekar@intel.com>; devel@edk2.groups.io
> > Cc: Maciej Rabeda <maciej.rabeda@linux.intel.com>; Siyuan Fu
> > <siyuan.fu@intel.com>; Abner Chang <abner.chang@amd.com>; Igor
> > Kulchytskyy <igork@ami.com>; Nick Ramirez <nramirez@nvidia.com>
> > Subject: RE: [edk2-devel] [PATCH 2/2] NetworkPkg/HttpDxe: fix driver
> > binding start issue.
> >
> > Hi Saloni,
> >
> > Thanks for your review.
> >
> > When uninstall fails, per UEFI specification, the protocol will be
> > installed again and will be visible to UEFI drivers.
> >
> > Page 190, UEFI spec. 2.10:
> > "If any errors are generated while the protocol interfaces are being
> > uninstalled, then the protocols uninstalled prior to the error will be
> > reinstalled with the boot service
> > EFI_BOOT_SERVICES.InstallProtocolInterface() and the status code
> > EFI_INVALID_PARAMETER is returned."
> >
> > In this case, if we do FreePool while driver still can locate
> > gEfiHttpServiceBindingProtocolGuid. Driver will access to the memory
> > that is released to system. Memory issue may happen.
> >
> > Regards,
> > Nickle
> >
> > > -----Original Message-----
> > > From: Kasbekar, Saloni <saloni.kasbekar@intel.com>
> > > Sent: Thursday, June 29, 2023 3:07 AM
> > > To: devel@edk2.groups.io; Nickle Wang <nicklew@nvidia.com>
> > > Cc: Maciej Rabeda <maciej.rabeda@linux.intel.com>; Siyuan Fu
> > > <siyuan.fu@intel.com>; Abner Chang <abner.chang@amd.com>; Igor
> > > Kulchytskyy <igork@ami.com>; Nick Ramirez <nramirez@nvidia.com>
> > > Subject: RE: [edk2-devel] [PATCH 2/2] NetworkPkg/HttpDxe: fix driver
> > > binding start issue.
> > >
> > > External email: Use caution opening links or attachments
> > >
> > >
> > > Hi Nickle,
> > >
> > > We would want to do the FreePool even if the Uninstall fails (like
> > > in the case where we failed to install the multiple protocol
> > > interfaces and then went to ON_ERROR). Do you think it's better if
> > > we change it to -
> > >
> > >   if (HttpService != NULL) {
> > >     HttpCleanService (HttpService, UsingIpv6);
> > >     Status = gBS->UninstallMultipleProtocolInterfaces (
> > >                     &ControllerHandle,
> > >                     &gEfiHttpServiceBindingProtocolGuid,
> > >                     &HttpService->ServiceBinding,
> > >                     NULL
> > >                     );
> > >     if ((HttpService->Tcp4ChildHandle == NULL) &&
> > > (HttpService->Tcp6ChildHandle == NULL)) {
> > >         FreePool (HttpService);
> > >     }
> > >   }
> > >
> > > Thanks,
> > > Saloni
> > >
> > > -----Original Message-----
> > > From: devel@edk2.groups.io <devel@edk2.groups.io> On Behalf Of
> > > Nickle Wang via groups.io
> > > Sent: Tuesday, June 27, 2023 5:56 PM
> > > To: devel@edk2.groups.io; Nickle Wang <nicklew@nvidia.com>
> > > Cc: Maciej Rabeda <maciej.rabeda@linux.intel.com>; Siyuan Fu
> > > <siyuan.fu@intel.com>; Abner Chang <abner.chang@amd.com>; Igor
> > > Kulchytskyy <igork@ami.com>; Nick Ramirez <nramirez@nvidia.com>
> > > Subject: Re: [edk2-devel] [PATCH 2/2] NetworkPkg/HttpDxe: fix driver
> > > binding start issue.
> > >
> > > May I know if someone can help to review this patch?
> > >
> > > Thanks,
> > > Nickle
> > >
> > > > -----Original Message-----
> > > > From: devel@edk2.groups.io <devel@edk2.groups.io> On Behalf Of
> > > > Nickle Wang via groups.io
> > > > Sent: Friday, February 10, 2023 8:34 PM
> > > > To: devel@edk2.groups.io
> > > > Cc: Maciej Rabeda <maciej.rabeda@linux.intel.com>; Siyuan Fu
> > > > <siyuan.fu@intel.com>; Abner Chang <abner.chang@amd.com>; Igor
> > > > Kulchytskyy <igork@ami.com>; Nick Ramirez <nramirez@nvidia.com>
> > > > Subject: [edk2-devel] [PATCH 2/2] NetworkPkg/HttpDxe: fix driver
> > > > binding start issue.
> > > >
> > > > External email: Use caution opening links or attachments
> > > >
> > > >
> > > > When failure happens in HttpDxeStart, the error handling code
> > > > release the memory buffer but it does not uninstall HTTP service
> > > > bindnig protocol. As the result, application can still locate this
> > > > protocol and invoke service binding fucntions in released memory
> pool.
> > > >
> > > > Signed-off-by: Nickle Wang <nicklew@nvidia.com>
> > > > Cc: Maciej Rabeda <maciej.rabeda@linux.intel.com>
> > > > Cc: Siyuan Fu <siyuan.fu@intel.com>
> > > > Cc: Abner Chang <abner.chang@amd.com>
> > > > Cc: Igor Kulchytskyy <igork@ami.com>
> > > > Cc: Nick Ramirez <nramirez@nvidia.com>
> > > > ---
> > > >  NetworkPkg/HttpDxe/HttpDriver.c | 13 +++++++++++--
> > > >  1 file changed, 11 insertions(+), 2 deletions(-)
> > > >
> > > > diff --git a/NetworkPkg/HttpDxe/HttpDriver.c
> > > > b/NetworkPkg/HttpDxe/HttpDriver.c index 5d918d3c4d..f6d1263cad
> > > > 100644
> > > > --- a/NetworkPkg/HttpDxe/HttpDriver.c
> > > > +++ b/NetworkPkg/HttpDxe/HttpDriver.c
> > > > @@ -3,6 +3,7 @@
> > > >
> > > >    Copyright (c) 2015 - 2018, Intel Corporation. All rights
> reserved.<BR>
> > > >    (C) Copyright 2016 Hewlett Packard Enterprise Development
> > > > LP<BR>
> > > > +  Copyright (c) 2023, NVIDIA CORPORATION & AFFILIATES. All rights
> > reserved.
> > > >
> > > >    SPDX-License-Identifier: BSD-2-Clause-Patent
> > > >
> > > > @@ -464,8 +465,16 @@ ON_ERROR:
> > > >
> > > >    if (HttpService != NULL) {
> > > >      HttpCleanService (HttpService, UsingIpv6);
> > > > -    if ((HttpService->Tcp4ChildHandle == NULL) && (HttpService-
> > > > >Tcp6ChildHandle == NULL)) {
> > > > -      FreePool (HttpService);
> > > > +    Status = gBS->UninstallMultipleProtocolInterfaces (
> > > > +                    &ControllerHandle,
> > > > +                    &gEfiHttpServiceBindingProtocolGuid,
> > > > +                    &HttpService->ServiceBinding,
> > > > +                    NULL
> > > > +                    );
> > > > +    if (!EFI_ERROR (Status)) {
> > > > +      if ((HttpService->Tcp4ChildHandle == NULL) && (HttpService-
> > > > >Tcp6ChildHandle == NULL)) {
> > > > +        FreePool (HttpService);
> > > > +      }
> > > >      }
> > > >    }
> > > >
> > > > --
> > > > 2.39.1.windows.1
> > > >
> > > >
> > > >
> > > >
> > > >
> > >
> > >
> > >
> > >
> > >
> >
> >
> >
> > 
> >



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