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authorStefan Brüns <stefan.bruens@rwth-aachen.de>2016-10-01 23:32:29 +0200
committerAlexander Graf <agraf@suse.de>2016-10-18 09:08:08 +0200
commit511d0b97ef709d13da4922fb694d55ef9a5ef641 (patch)
tree19fdb61edb3780ea70efa16b418fad2143dde9a2 /lib/efi_loader
parentb6a951727504d4159467ac98434849f81aaf9ffa (diff)
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efi_loader: Do not leak memory when unlinking a mapping
As soon as a mapping is unlinked from the list, there are no further references to it, so it should be freed. If it not unlinked, update the start address and length. Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de> Reviewed-by: Alexander Graf <agraf@suse.de> Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'lib/efi_loader')
-rw-r--r--lib/efi_loader/efi_memory.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/lib/efi_loader/efi_memory.c b/lib/efi_loader/efi_memory.c
index 742bc90..95aa590 100644
--- a/lib/efi_loader/efi_memory.c
+++ b/lib/efi_loader/efi_memory.c
@@ -116,10 +116,13 @@ static int efi_mem_carve_out(struct efi_mem_list *map,
if (map_end == carve_end) {
/* Full overlap, just remove map */
list_del(&map->link);
+ free(map);
+ } else {
+ map->desc.physical_start = carve_end;
+ map->desc.num_pages = (map_end - carve_end)
+ >> EFI_PAGE_SHIFT;
}
- map_desc->physical_start = carve_end;
- map_desc->num_pages = (map_end - carve_end) >> EFI_PAGE_SHIFT;
return (carve_end - carve_start) >> EFI_PAGE_SHIFT;
}