efi_loader: out of memory in efi_mem_carve_out
Handle out of memory situation in efi_mem_carve_out().
Fixes: 5d00995c361c ("efi_loader: Implement memory allocation and map")
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
diff --git a/lib/efi_loader/efi_memory.c b/lib/efi_loader/efi_memory.c
index 4630387..45d3bf5 100644
--- a/lib/efi_loader/efi_memory.c
+++ b/lib/efi_loader/efi_memory.c
@@ -34,6 +34,7 @@
#define EFI_CARVE_NO_OVERLAP -1
#define EFI_CARVE_LOOP_AGAIN -2
#define EFI_CARVE_OVERLAPS_NONRAM -3
+#define EFI_CARVE_OUT_OF_RESOURCES -4
/* This list contains all memory map items */
static LIST_HEAD(efi_mem);
@@ -239,6 +240,8 @@
/* Create a new map from [ carve_start ... map_end ] */
newmap = calloc(1, sizeof(*newmap));
+ if (!newmap)
+ return EFI_CARVE_OUT_OF_RESOURCES;
newmap->desc = map->desc;
newmap->desc.physical_start = carve_start;
newmap->desc.virtual_start = carve_start;
@@ -313,6 +316,9 @@
r = efi_mem_carve_out(lmem, &newlist->desc,
overlap_only_ram);
switch (r) {
+ case EFI_CARVE_OUT_OF_RESOURCES:
+ free(newlist);
+ return EFI_OUT_OF_RESOURCES;
case EFI_CARVE_OVERLAPS_NONRAM:
/*
* The user requested to only have RAM overlaps,