From: Hao Ge <hao.ge@linux.dev>
Date: Wed, 13 May 2026 08:25:25 +0000 (+0800)
Subject: lib/test_hmm: use kvfree() to free kvcalloc() allocations
X-Git-Url: http://git.ipfire.org/gitweb/?a=commitdiff_plain;h=59f19bf6f119eecfa16355186b593abba8eb5198;p=thirdparty%2Flinux.git

lib/test_hmm: use kvfree() to free kvcalloc() allocations

Coccinelle scripts/coccinelle/api/kfree_mismatch.cocci reports
the following warnings:

  lib/test_hmm.c:1256:15-16: WARNING kvmalloc is used to allocate this memory at line 1191
  lib/test_hmm.c:1257:15-16: WARNING kvmalloc is used to allocate this memory at line 1196

Fix this by replacing kfree() with kvfree() to correctly handle the
vmalloc() fallback path of kvcalloc().

Link: https://lore.kernel.org/20260513082525.154036-1-hao.ge@linux.dev
Fixes: 775465fd26a3 ("lib/test_hmm: add zone device private THP test infrastructure")
Signed-off-by: Hao Ge <hao.ge@linux.dev>
Acked-by: Balbir Singh <balbirs@nvidia.com>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Leon Romanovsky <leon@kernel.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

diff --git a/lib/test_hmm.c b/lib/test_hmm.c
index 213504915737..38996c4baa40 100644
--- a/lib/test_hmm.c
+++ b/lib/test_hmm.c
@@ -1253,8 +1253,8 @@ out:
 	mmap_read_unlock(mm);
 	mmput(mm);
 free_mem:
-	kfree(src_pfns);
-	kfree(dst_pfns);
+	kvfree(src_pfns);
+	kvfree(dst_pfns);
 	return ret;
 }