6.1-stable review patch. If anyone has any objections, please let me know.
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From: Ard Biesheuvel ardb+git@google.com
From: Ard Biesheuvel ardb@kernel.org
[ Commit 50dcc2e0d62e3c4a54f39673c4dc3dcde7c74d52 upstream ]
Now that the x86 EFI stub calls into some APIs exposed by the decompressor (e.g., kaslr_get_random_long()), it is necessary to ensure that the global boot_params variable is set correctly before doing so.
Signed-off-by: Ard Biesheuvel ardb@kernel.org Signed-off-by: Ingo Molnar mingo@kernel.org Signed-off-by: Ard Biesheuvel ardb@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/firmware/efi/libstub/x86-stub.c | 2 ++ 1 file changed, 2 insertions(+)
--- a/drivers/firmware/efi/libstub/x86-stub.c +++ b/drivers/firmware/efi/libstub/x86-stub.c @@ -827,6 +827,8 @@ void __noreturn efi_stub_entry(efi_handl unsigned long kernel_entry; efi_status_t status;
+ boot_params_ptr = boot_params; + efi_system_table = sys_table_arg; /* Check if we were booted by the EFI firmware */ if (efi_system_table->hdr.signature != EFI_SYSTEM_TABLE_SIGNATURE)