[PATCH 6.18.y 1/2] kho: free chunks using free_page() instead of kfree()

[Federico Parola]

From: Pratyush Yadav <pratyush at kernel.org>

[ Upstream commit b15515155af735a86e5bcd67ed739162f0de27f5 ]

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 at kernel.org>
Reviewed-by: Pasha Tatashin <pasha.tatashin at soleen.com>
Reviewed-by: Mike Rapoport (Microsoft) <rppt at kernel.org>
Cc: Alexander Graf <graf at amazon.com>
Cc: David Matlack <dmatlack at google.com>
Signed-off-by: Andrew Morton <akpm at linux-foundation.org>
Signed-off-by: Federico Parola <fparola at amazon.de>
---
 kernel/kexec_handover.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/kexec_handover.c b/kernel/kexec_handover.c
index ac9fa7727b5ff..9fe5d14f1ec54 100644
--- a/kernel/kexec_handover.c
+++ b/kernel/kexec_handover.c
@@ -365,7 +365,7 @@ static void kho_mem_ser_free(struct khoser_mem_chunk *first_chunk)
 		struct khoser_mem_chunk *tmp = chunk;
 
 		chunk = KHOSER_LOAD_PTR(chunk->hdr.next);
-		kfree(tmp);
+		free_page((unsigned long)tmp);
 	}
 }
 
-- 
2.47.3