From 01fa922bbbac378902ef85e522724dd7c7a10a8b Mon Sep 17 00:00:00 2001
From: Heinrich Schuchardt <xypron.glpk@gmx.de>
Date: Wed, 22 Jul 2020 06:29:38 +0200
Subject: [PATCH] efi_loader: efi_current_var after SetVirtualAddressMap
Variable efi_current_var is a pointer to a physical memory address that
becomes invalid after SetVirtualAddressMap(). Instead of converting it via
ConvertPointer() simply set it to NULL.
Fixes: b02a707152dc ("efi_loader: enable UEFI variables at runtime")
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
---
lib/efi_loader/efi_var_mem.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/lib/efi_loader/efi_var_mem.c b/lib/efi_loader/efi_var_mem.c
index 7a2dba7dc2..856e5e1d56 100644
--- a/lib/efi_loader/efi_var_mem.c
+++ b/lib/efi_loader/efi_var_mem.c
@@ -231,6 +231,7 @@ static void EFIAPI __efi_runtime
efi_var_mem_notify_virtual_address_map(struct efi_event *event, void *context)
{
efi_convert_pointer(0, (void **)&efi_var_buf);
+ efi_current_var = NULL;
}
efi_status_t efi_var_mem_init(void)
--
2.39.5