Reviewed-by: Fu Siyuan <[email protected]> > -----Original Message----- > From: Wang, Fan > Sent: Wednesday, January 10, 2018 11:16 AM > To: [email protected] > Cc: Wu, Jiaxin <[email protected]>; Ye, Ting <[email protected]>; Fu, > Siyuan <[email protected]> > Subject: [Patch 1/2] MdeModulePkg: Freed the received packet buffer if it > is not expected. > > * When the packet is not normal packet or icmp error packet, the code > does not recycle it by signal RecycleSignal event, and this will > result some memory leak. This patch is to fix this issue. > > Cc: Jiaxin Wu <[email protected]> > Cc: Ye Ting <[email protected]> > Cc: Fu Siyuan <[email protected]> > Contributed-under: TianoCore Contribution Agreement 1.0 > Signed-off-by: Wang Fan <[email protected]> > --- > MdeModulePkg/Library/DxeIpIoLib/DxeIpIoLib.c | 18 ++++++++++++++---- > 1 file changed, 14 insertions(+), 4 deletions(-) > > diff --git a/MdeModulePkg/Library/DxeIpIoLib/DxeIpIoLib.c > b/MdeModulePkg/Library/DxeIpIoLib/DxeIpIoLib.c > index a06c0b6..c7bc1aa 100644 > --- a/MdeModulePkg/Library/DxeIpIoLib/DxeIpIoLib.c > +++ b/MdeModulePkg/Library/DxeIpIoLib/DxeIpIoLib.c > @@ -1037,16 +1037,26 @@ IpIoListenHandlerDpc ( > // The reception is actively aborted by the consumer, directly return. > // > return; > } > > - if (((EFI_SUCCESS != Status) && (EFI_ICMP_ERROR != Status)) || (NULL == > RxData)) { > + if ((EFI_SUCCESS != Status) && (EFI_ICMP_ERROR != Status)) { > // > - // @bug Only process the normal packets and the icmp error packets, > if RxData is NULL > - // @bug with Status == EFI_SUCCESS or EFI_ICMP_ERROR, just resume the > receive although > - // @bug this should be a bug of the low layer (IP). > + // Only process the normal packets and the icmp error packets. > // > + if (RxData != NULL) { > + goto CleanUp; > + } else { > + goto Resume; > + } > + } > + > + // > + // if RxData is NULL with Status == EFI_SUCCESS or EFI_ICMP_ERROR, this > should be a code issue in the low layer (IP). > + // > + ASSERT (RxData != NULL); > + if (RxData == NULL) { > goto Resume; > } > > if (NULL == IpIo->PktRcvdNotify) { > goto CleanUp; > -- > 1.9.5.msysgit.1
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