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MdeModulePkg/RamDiskDxe: Init list head before registering RamDisk protocol 

REF:https://bugzilla.tianocore.org/show_bug.cgi?id=3483

This patch initializes the linked list RegisteredRamDisks in
RamDiskDxeEntryPoint before the registration of gEfiRamDiskProtocolGuid
with InstallMultipleProtocolInterfaces, allowing ramdisks to be created
via a callback installed with RegisterProtocolNotify as soon as the
protocol is registered.

Without this, calling RamDisk->Register() in the callback causes a crash:

ASSERT [RamDiskDxe] MdePkg/Library/BaseLib/LinkedList.c(75): List->ForwardLink != ((void *) 0)

Signed-off-by: Trammell Hudson <hudson@trmm.net>
Cc: Daniel Schaefer <daniel.schaefer@hpe.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Hao A Wu <hao.a.wu@intel.com>
Cc: Ray Ni <ray.ni@intel.com>
Cc: Zhichao Gao <zhichao.gao@intel.com>
Reviewed-by: Hao A Wu <hao.a.wu@intel.com>
This commit is contained in:
Trammell Hudson 2021-07-13 09:09:31 +08:00 committed by mergify[bot]
parent 9bf4aee734
commit d0b6596b8e
1 changed files with 6 additions and 5 deletions
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11
MdeModulePkg/Universal/Disk/RamDiskDxe/RamDiskDriver.c
View File

@ -154,6 +154,12 @@ RamDiskDxeEntryPoint (
goto ErrorExit;
}
//
// Initialize the list of registered RAM disks maintained by the driver
// before installing the protocol
//
InitializeListHead (&RegisteredRamDisks);
//
// Install the EFI_RAM_DISK_PROTOCOL and RAM disk private data onto a
// new handle
@ -170,11 +176,6 @@ RamDiskDxeEntryPoint (
goto ErrorExit;
}
//
// Initialize the list of registered RAM disks maintained by the driver
//
InitializeListHead (&RegisteredRamDisks);
Status = EfiCreateEventReadyToBootEx (
TPL_CALLBACK,
RamDiskAcpiCheck,