Re: [PATCH v5 06/17] LoongArch: kexec_file: Fix CMA page leaks in segment placement retry loops

> During kexec image placement retry loops, any midway failure causes
> the loader to truncate `image->nr_segments` back to its initial state
> to purge the failed segments.
> 
> However, this truncation introduces a memory leak. The CMA pages
> allocated via kexec_add_buffer() during the failed attempt are tracked
> in the `image->segment_cma` array. Because the subsequent cleanup paths
> only iterate up to the truncated `nr_segments` boundary, these allocated
> CMA pages outside the new boundary are permanently leaked.
> 
> Fix this by explicitly releasing the associated CMA buffers in
> the failure paths before `image->nr_segments` is reduced.
> 
> Cc: Huacai Chen <[email protected]>
> Cc: WANG Xuerui <[email protected]>
> Cc: Youling Tang <[email protected]>
> Cc: "Mike Rapoport (Microsoft)" <[email protected]>
> Cc: Sourabh Jain <[email protected]>
> Cc: Kees Cook <[email protected]>
> Cc: [email protected]
> Link: https://sashiko.dev/#/patchset/20260729031235.2840255-1-ruanjinjie%40huawei.com
> Fixes: 55d990f0084c ("LoongArch: Add EFI binary support for kexec_file")
> Signed-off-by: Jinjie Ruan <[email protected]>

Sashiko has reviewed this patch and found no issues. It looks great!

-- 
Sashiko AI review · https://sashiko.dev/#/patchset/[email protected]?part=6