[PATCH 1/1] efi_loader: initialize root node first

Heinrich Schuchardt xypron.glpk at gmx.de
Wed May 20 21:36:55 CEST 2020


With commit 16ad946f41d3 ("efi_loader: change setup sequence") the
detection of block device was moved to the start of the initialization
sequence. In the case of virtio devices to two handles with the same device
path being created.

The root node handle should be created before anything else.

Reported-by: Ard Biesheuvel <ardb at kernel.org>
Fixes: 16ad946f41d3 ("efi_loader: change setup sequence")
Signed-off-by: Heinrich Schuchardt <xypron.glpk at gmx.de>
---
 lib/efi_loader/efi_setup.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/lib/efi_loader/efi_setup.c b/lib/efi_loader/efi_setup.c
index 26a7423203..dd0c53fc23 100644
--- a/lib/efi_loader/efi_setup.c
+++ b/lib/efi_loader/efi_setup.c
@@ -135,6 +135,11 @@ efi_status_t efi_init_obj_list(void)
 	/* On ARM switch from EL3 or secure mode to EL2 or non-secure mode */
 	switch_to_non_secure_mode();

+	/* Initialize root node */
+	ret = efi_root_node_register();
+	if (ret != EFI_SUCCESS)
+		goto out;
+
 #ifdef CONFIG_PARTITIONS
 	ret = efi_disk_register();
 	if (ret != EFI_SUCCESS)
@@ -175,11 +180,6 @@ efi_status_t efi_init_obj_list(void)
 	if (ret != EFI_SUCCESS)
 		goto out;

-	/* Initialize root node */
-	ret = efi_root_node_register();
-	if (ret != EFI_SUCCESS)
-		goto out;
-
 	/* Initialize EFI driver uclass */
 	ret = efi_driver_init();
 	if (ret != EFI_SUCCESS)
--
2.26.2



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