The memory leak is reported by kmemleak detector, has been existing for very long time. It casue much memory loss on large machine with huge memory hotplug which will trigger kdump kernel reloading many times, with kexec_file_load interface. And in patch 2, clean up is done to remove unneeded arch_kexec_kernel_image_load() and rename functions. V1 post can be found here: https://lore.kernel.org/all/20211029072424.9109-1-bhe@xxxxxxxxxx/T/#u v1->v2: No code change. The v1 post has been acked by Dave Young but not merged. In v2, just merging the old patch 1 and 2 as per Dave's concern in v1 post. Baoquan He (2): x86/kexec: fix memory leak of elf header buffer kexec_file: clean up arch_kexec_kernel_image_load arch/x86/kernel/machine_kexec_64.c | 23 +++++++++-------------- include/linux/kexec.h | 1 - kernel/kexec_file.c | 9 ++------- 3 files changed, 11 insertions(+), 22 deletions(-) -- 2.31.1
