+ kho-free-chunks-using-free_page-instead-of-kfree.patch added to mm-nonmm-unstable branch

[Andrew Morton <akpm@linux-foundation.org>]

The patch titled
     Subject: kho: free chunks using free_page() instead of kfree()
has been added to the -mm mm-nonmm-unstable branch.  Its filename is
     kho-free-chunks-using-free_page-instead-of-kfree.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/kho-free-chunks-using-free_page-instead-of-kfree.patch

This patch will later appear in the mm-nonmm-unstable branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

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------------------------------------------------------
From: Pratyush Yadav <pratyush@kernel.org>
Subject: kho: free chunks using free_page() instead of kfree()
Date: Tue, 18 Nov 2025 19:22:16 +0100

Before commit fa759cd75bce5 ("kho: allocate metadata directly from the
buddy allocator"), the chunks were allocated from the slab allocator using
kzalloc().  Those were rightly freed using kfree().

When the commit switched to using the buddy allocator directly, it missed
updating kho_mem_ser_free() to use free_page() instead of kfree().

Link: https://lkml.kernel.org/r/20251118182218.63044-1-pratyush@kernel.org
Fixes: fa759cd75bce5 ("kho: allocate metadata directly from the buddy allocator")
Signed-off-by: Pratyush Yadav <pratyush@kernel.org>
Reviewed-by: Pasha Tatashin <pasha.tatashin@soleen.com>
Cc: Alexander Graf <graf@amazon.com>
Cc: David Matlack <dmatlack@google.com>
Cc: Mike Rapoport <rppt@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 kernel/liveupdate/kexec_handover.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/kernel/liveupdate/kexec_handover.c~kho-free-chunks-using-free_page-instead-of-kfree
+++ a/kernel/liveupdate/kexec_handover.c
@@ -360,7 +360,7 @@ static void kho_mem_ser_free(struct khos
 		struct khoser_mem_chunk *tmp = chunk;
 
 		chunk = KHOSER_LOAD_PTR(chunk->hdr.next);
-		kfree(tmp);
+		free_page((unsigned long)tmp);
 	}
 }
 
_

Patches currently in -mm which might be from pratyush@kernel.org are

maintainers-add-test_kho-to-khos-entry.patch
maintainers-add-myself-as-a-reviewer-for-kho.patch
liveupdate-luo_file-add-private-argument-to-store-runtime-state.patch
kho-free-chunks-using-free_page-instead-of-kfree.patch