openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

x86/efi: Initialize status to ensure garbage is not returned on small size 

Although very unlikey, if size is too small or zero, then we end up with
status not being set and returning garbage. Instead, initializing status to
EFI_INVALID_PARAMETER to indicate that size is invalid in the calls to
setup_uga32 and setup_uga64.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Matt Fleming <matt@codeblueprint.co.uk>
This commit is contained in:
Colin Ian King 2016-07-20 11:11:06 +01:00 committed by Matt Fleming
parent dce48e351c
commit ac0e94b63e
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
arch/x86/boot/compressed/eboot.c
View File

@ -578,7 +578,7 @@ setup_uga32(void **uga_handle, unsigned long size, u32 *width, u32 *height)
efi_guid_t uga_proto = EFI_UGA_PROTOCOL_GUID;
unsigned long nr_ugas;
u32 *handles = (u32 *)uga_handle;;
efi_status_t status;
efi_status_t status = EFI_INVALID_PARAMETER;
int i;
first_uga = NULL;
@ -623,7 +623,7 @@ setup_uga64(void **uga_handle, unsigned long size, u32 *width, u32 *height)
efi_guid_t uga_proto = EFI_UGA_PROTOCOL_GUID;
unsigned long nr_ugas;
u64 *handles = (u64 *)uga_handle;;
efi_status_t status;
efi_status_t status = EFI_INVALID_PARAMETER;
int i;
first_uga = NULL;