From a1b24823b6c22ede11d311b05ea862965ea86b0b Mon Sep 17 00:00:00 2001 From: Rob Clark Date: Wed, 26 Jul 2017 14:34:05 -0400 Subject: [PATCH] efi_loader: fix bug in efi_get_memory_map When booting shim -> fallback -> shim -> grub -> linux the memory map is a bit larger than the size linux passes in on the first call. But in the EFI_BUFFER_TOO_SMALL case we were not passing back the updated size to linux so it would loop forever. Signed-off-by: Rob Clark Signed-off-by: Alexander Graf --- lib/efi_loader/efi_memory.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/lib/efi_loader/efi_memory.c b/lib/efi_loader/efi_memory.c index f59e3ea327..9e079f1fa3 100644 --- a/lib/efi_loader/efi_memory.c +++ b/lib/efi_loader/efi_memory.c @@ -407,11 +407,11 @@ efi_status_t efi_get_memory_map(unsigned long *memory_map_size, map_size = map_entries * sizeof(struct efi_mem_desc); + *memory_map_size = map_size; + if (provided_map_size < map_size) return EFI_BUFFER_TOO_SMALL; - *memory_map_size = map_size; - if (descriptor_size) *descriptor_size = sizeof(struct efi_mem_desc); -- 2.39.5