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More EFI fixes for v5.10-rc:

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- revert efivarfs kmemleak fix again - it was a false positive;
 - make CONFIG_EFI_EARLYCON depend on CONFIG_EFI explicitly so it does not
   pull in other dependencies unnecessarily if CONFIG_EFI is not set
 - defer attempts to load SSDT overrides from EFI vars until after the
   efivar layer is up.
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Merge tag 'efi-urgent-for-v5.10-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull EFI fixes from Borislav Petkov:
 "More EFI fixes forwarded from Ard Biesheuvel:

   - revert efivarfs kmemleak fix again - it was a false positive

   - make CONFIG_EFI_EARLYCON depend on CONFIG_EFI explicitly so it does
     not pull in other dependencies unnecessarily if CONFIG_EFI is not
     set

   - defer attempts to load SSDT overrides from EFI vars until after the
     efivar layer is up"

* tag 'efi-urgent-for-v5.10-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  efi: EFI_EARLYCON should depend on EFI
  efivarfs: revert "fix memory leak in efivarfs_create()"
  efi/efivars: Set generic ops before loading SSDT
This commit is contained in:
Linus Torvalds 2020-11-29 10:18:53 -08:00
commit 1214917e00
4 changed files with 4 additions and 3 deletions
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2
drivers/firmware/efi/Kconfig
View File

@ -270,7 +270,7 @@ config EFI_DEV_PATH_PARSER
config EFI_EARLYCON
def_bool y
depends on SERIAL_EARLYCON && !ARM && !IA64
depends on EFI && SERIAL_EARLYCON && !ARM && !IA64
select FONT_SUPPORT
select ARCH_USE_MEMREMAP_PROT

2
drivers/firmware/efi/efi.c
View File

@ -390,10 +390,10 @@ static int __init efisubsys_init(void)
if (efi_rt_services_supported(EFI_RT_SUPPORTED_GET_VARIABLE |
EFI_RT_SUPPORTED_GET_NEXT_VARIABLE_NAME)) {
efivar_ssdt_load();
error = generic_ops_register();
if (error)
goto err_put;
efivar_ssdt_load();
platform_device_register_simple("efivars", 0, NULL, 0);
}

2
fs/efivarfs/inode.c
View File

@ -7,6 +7,7 @@
#include <linux/efi.h>
#include <linux/fs.h>
#include <linux/ctype.h>
#include <linux/kmemleak.h>
#include <linux/slab.h>
#include <linux/uuid.h>
@ -103,6 +104,7 @@ static int efivarfs_create(struct inode *dir, struct dentry *dentry,
var->var.VariableName[i] = '\0';
inode->i_private = var;
kmemleak_ignore(var);
err = efivar_entry_add(var, &efivarfs_list);
if (err)

1
fs/efivarfs/super.c
View File

@ -21,7 +21,6 @@ LIST_HEAD(efivarfs_list);
static void efivarfs_evict_inode(struct inode *inode)
{
clear_inode(inode);
kfree(inode->i_private);
}
static const struct super_operations efivarfs_ops = {