mirror of https://github.com/acidanthera/audk.git
MdeModulePkg/SMM: Support to unregister SMI handler inside SMI handler
To support unregister SMI handler inside SMI handler itself, get next node before SMI handler is executed, since LIST_ENTRY that Link points to may be freed if unregister SMI handler in SMI handler itself. Cc: Liming Gao <gaoliming@byosoft.com.cn> Cc: Jiaxin Wu <jiaxin.wu@intel.com> Reviewed-by: Ray Ni <ray.ni@intel.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com> Signed-off-by: Zhiguang Liu <zhiguang.liu@intel.com> Message-Id: <20240301030133.628-2-zhiguang.liu@intel.com>
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@ -134,8 +134,14 @@ SmiManage (
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Head = &SmiEntry->SmiHandlers;
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for (Link = Head->ForwardLink; Link != Head; Link = Link->ForwardLink) {
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for (Link = Head->ForwardLink; Link != Head;) {
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SmiHandler = CR (Link, SMI_HANDLER, Link, SMI_HANDLER_SIGNATURE);
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//
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// To support unregister SMI handler inside SMI handler itself,
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// get next node before handler is executed, since LIST_ENTRY that
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// Link points to may be freed if unregister SMI handler.
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//
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Link = Link->ForwardLink;
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Status = SmiHandler->Handler (
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(EFI_HANDLE)SmiHandler,
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