From: Ranbir Singh <ranbir.sin...@dell.com> The functions CoreConvertSpace and CoreAllocateSpace in
MdeModulePkg/Core/Dxe/Gcd/Gcd.c has ASSERT (FALSE); at lines 755 and 1155 which gets hit when Operation neither include GCD_MEMORY_SPACE_OPERATION nor include GCD_IO_SPACE_OPERATION but this comes into play only in DEBUG mode. In Release mode, the code continues to proceed in this undesirable case with Map variable still set to NULL and hence dereferencing "Map" will lead to CRASH. It is safer to add a debug message in this scenario and return from the function with EFI_INVALID_PARAMETER; The existing ASSERT may be retained or may be deleted whatever is deemed more appropriate. REF: https://bugzilla.tianocore.org/show_bug.cgi?id=4219 Cc: Dandan Bi <dandan...@intel.com> Cc: Liming Gao <gaolim...@byosoft.com.cn> Co-authored-by: Veeresh Sangolli <veeresh.sango...@dellteam.com> Signed-off-by: Ranbir Singh <ranbir.sin...@dell.com> Signed-off-by: Ranbir Singh <rsi...@ventanamicro.com> --- MdeModulePkg/Core/Dxe/Gcd/Gcd.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/MdeModulePkg/Core/Dxe/Gcd/Gcd.c b/MdeModulePkg/Core/Dxe/Gcd/Gcd.c index 792cd2e0af23..39fa2adf9366 100644 --- a/MdeModulePkg/Core/Dxe/Gcd/Gcd.c +++ b/MdeModulePkg/Core/Dxe/Gcd/Gcd.c @@ -752,7 +752,9 @@ CoreConvertSpace ( CoreAcquireGcdIoLock (); Map = &mGcdIoSpaceMap; } else { + DEBUG ((DEBUG_GCD, " Status = %r\n", EFI_INVALID_PARAMETER)); ASSERT (FALSE); + return EFI_INVALID_PARAMETER; } // @@ -1152,7 +1154,9 @@ CoreAllocateSpace ( CoreAcquireGcdIoLock (); Map = &mGcdIoSpaceMap; } else { + DEBUG ((DEBUG_GCD, " Status = %r\n", EFI_INVALID_PARAMETER)); ASSERT (FALSE); + return EFI_INVALID_PARAMETER; } Found = FALSE; -- 2.34.1 -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#109102): https://edk2.groups.io/g/devel/message/109102 Mute This Topic: https://groups.io/mt/101612676/21656 Group Owner: devel+ow...@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-