Reviewed-by: Liming Gao <liming....@intel.com> > -----Original Message----- > From: Wu, Hao A > Sent: Tuesday, May 21, 2019 4:03 PM > To: devel@edk2.groups.io; Gao, Zhichao <zhichao....@intel.com> > Cc: Gao, Liming <liming....@intel.com> > Subject: RE: [edk2-devel] [PATCH] IntelFrameworkModulePkg/DebugLib: Fix > string copy issue > > > -----Original Message----- > > From: devel@edk2.groups.io [mailto:devel@edk2.groups.io] On Behalf Of > > Gao, Zhichao > > Sent: Tuesday, May 21, 2019 3:50 PM > > To: devel@edk2.groups.io > > Cc: Gao, Liming; Wu, Hao A > > Subject: [edk2-devel] [PATCH] IntelFrameworkModulePkg/DebugLib: Fix > > string copy issue > > > > REF: https://bugzilla.tianocore.org/show_bug.cgi?id=1826 > > > > There is a bug to use AsciiStrCpyS to copy a truncated > > string. If would cause an assert because the truncated > > length is always less than the source string length. It > > should use the AsciiStrnCpyS instead. > > > > Cc: Liming Gao <liming....@intel.com> > > Cc: Hao A Wu <hao.a...@intel.com> > > Signed-off-by: Zhichao Gao <zhichao....@intel.com> > > --- > > .../Library/PeiDxeDebugLibReportStatusCode/DebugLib.c | 4 ++-- > > 1 file changed, 2 insertions(+), 2 deletions(-) > > > > diff --git > > a/IntelFrameworkModulePkg/Library/PeiDxeDebugLibReportStatusCode/De > > bugLib.c > > b/IntelFrameworkModulePkg/Library/PeiDxeDebugLibReportStatusCode/De > > bugLib.c > > index e92601f89e..1840b6d683 100644 > > --- > > a/IntelFrameworkModulePkg/Library/PeiDxeDebugLibReportStatusCode/De > > bugLib.c > > +++ > > b/IntelFrameworkModulePkg/Library/PeiDxeDebugLibReportStatusCode/De > > bugLib.c > > @@ -150,7 +150,7 @@ DebugPrintMarker ( > > FormatString = (CHAR8 *)((UINT64 *)(DebugInfo + 1) + 12); > > > > // > > - // Copy the Format string into the record > > + // Copy the Format string into the record. It will be truncated if it's > > too long. > > // > > // According to the content structure of Buffer shown above, the size of > > // the FormatString buffer is the size of Buffer minus the Padding > > @@ -158,7 +158,7 @@ DebugPrintMarker ( > > // variable arguments (12 * sizeof (UINT64)). > > // > > DestBufferSize = sizeof (Buffer) - 4 - sizeof (EFI_DEBUG_INFO) - 12 * > > sizeof > > (UINT64); > > - AsciiStrCpyS (FormatString, DestBufferSize / sizeof (CHAR8), Format); > > + AsciiStrnCpyS (FormatString, DestBufferSize / sizeof (CHAR8), Format, > > DestBufferSize / sizeof (CHAR8) - 1); > > Reviewed-by: Hao A Wu <hao.a...@intel.com> > > Best Regards, > Hao Wu > > > > > // > > // The first 12 * sizeof (UINT64) bytes following EFI_DEBUG_INFO are for > > variable arguments > > -- > > 2.21.0.windows.1 > > > > > >
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