From: Pratyush Yadav <pratyush@kernel.org>
Date: Tue, 18 Nov 2025 18:22:16 +0000 (+0100)
Subject: kho: free chunks using free_page() instead of kfree()
X-Git-Tag: ceph-for-6.19-rc5~164^2~12
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=b15515155af735a86e5bcd67ed739162f0de27f5;p=ceph-client.git

kho: free chunks using free_page() instead of kfree()

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>
Reviewed-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Cc: Alexander Graf <graf@amazon.com>
Cc: David Matlack <dmatlack@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

diff --git a/kernel/liveupdate/kexec_handover.c b/kernel/liveupdate/kexec_handover.c
index 224bdf5becb6..ecc2058df1b6 100644
--- a/kernel/liveupdate/kexec_handover.c
+++ b/kernel/liveupdate/kexec_handover.c
@@ -360,7 +360,7 @@ 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);
 	}
 }