From: Peter Jones <pjones@xxxxxxxxxx> In "efi/x86: Explicitly set sections memory attributes", the following region is defined to help compute page permissions: /* .setup [image_base, _head] */ efi_adjust_memory_range_protection(image_base, (unsigned long)_head - image_base, EFI_MEMORY_RO | EFI_MEMORY_XP); In at least some cases, that will result in a size of 0, which will produce an error and a message on the console, though no actual failure will be caused in the boot process. This patch checks that case in efi_adjust_memory_range_protection() and returns the error without logging. Signed-off-by: Peter Jones <pjones@xxxxxxxxxx> --- drivers/firmware/efi/libstub/mem.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/firmware/efi/libstub/mem.c b/drivers/firmware/efi/libstub/mem.c index b31d1975caa2..50a0b649b75a 100644 --- a/drivers/firmware/efi/libstub/mem.c +++ b/drivers/firmware/efi/libstub/mem.c @@ -249,6 +249,9 @@ efi_status_t efi_adjust_memory_range_protection(unsigned long start, efi_physical_addr_t rounded_start, rounded_end; unsigned long attr_clear; + if (size == 0) + return EFI_INVALID_PARAMETER; + /* * This function should not be used to modify attributes * other than writable/executable. -- 2.37.4