UEFI SCT uses this call sequence to determine the current TPL level inside notification functions:

OldTpl = BS->RaiseTPL(TPL_HIGH_LEVEL); BS->RestoreTPL(OldTpl);

In RestoreTPL() we trigger the notification function of queued events. If we do not mark the event as non-queued before calling the notification function this results in an infinite recursive call sequence.

Mark the event as non-queued before entering the notification function.

Signed-off-by: Heinrich Schuchardt xypron.glpk@gmx.de --- lib/efi_loader/efi_boottime.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lib/efi_loader/efi_boottime.c b/lib/efi_loader/efi_boottime.c index b583ac6a42..ec6f5758de 100644 --- a/lib/efi_loader/efi_boottime.c +++ b/lib/efi_loader/efi_boottime.c @@ -181,10 +181,12 @@ static void efi_queue_event(struct efi_event *event, bool check_tpl) /* Check TPL */ if (check_tpl && efi_tpl >= event->notify_tpl) return; + event->is_queued = false; EFI_CALL_VOID(event->notify_function(event, event->notify_context)); + } else { + event->is_queued = false; } - event->is_queued = false; }

/** -- 2.20.1