[PATCH v5 05/17] arm64: kexec_file: Fix elf_headers memory leak in retry loop

[sashiko-bot at kernel.org]

> If load_other_segments() fails after image->elf_headers is assigned,
> the memory lifecycle is safely managed by the global kimage object
> and will be freed in arch_kimage_file_post_load_cleanup().
> 
> However, during a retry loop in image_load(), a subsequent iteration
> will allocate a new buffer and overwrite image->elf_headers. This
> permanently leaks the stale memory from the previous iteration before
> the global cleanup can track it.
> 
> Fix this by explicitly freeing the stale `image->elf_headers` buffer
> before assigning the newly allocated headers.
> 
> Cc: Catalin Marinas <catalin.marinas at arm.com>
> Cc: Will Deacon <will at kernel.org>
> Cc: Thomas Huth <thuth at redhat.com>
> Cc: Breno Leitao <leitao at debian.org>
> Cc: Andrew Morton <akpm at linux-foundation.org>
> Cc: Yeoreum Yun <yeoreum.yun at arm.com>
> Cc: Baoquan He <bhe at redhat.com>
> Cc: stable at vger.kernel.org
> Fixes: 108aa503657e ("arm64: kexec_file: try more regions if loading segments fails")
> Signed-off-by: Jinjie Ruan <ruanjinjie at huawei.com>

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

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Sashiko AI review · https://sashiko.dev/#/patchset/20260918100442.3841135-1-ruanjinjie@huawei.com?part=5