linux-kernel - [PATCH] init: Use kcalloc() instead of kzalloc()

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Message-ID: <20250930083542.18915-1-mehdi.benhadjkhelifa@gmail.com>
Date: Tue, 30 Sep 2025 09:35:37 +0100
From: Mehdi Ben Hadj Khelifa <mehdi.benhadjkhelifa@...il.com>
To: viro@...iv.linux.org.uk,
	brauner@...nel.org,
	jack@...e.cz
Cc: linux-fsdevel@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	skhan@...uxfoundation.org,
	david.hunter.linux@...il.com,
	linux-kernel-mentees@...ts.linuxfoundation.org,
	Mehdi Ben Hadj Khelifa <mehdi.benhadjkhelifa@...il.com>
Subject: [PATCH] init: Use kcalloc() instead of kzalloc()

Replace kzalloc() with kcalloc() in init/initramfs_test.c since the
calculation inside kzalloc is dynamic and could overflow.

Signed-off-by: Mehdi Ben Hadj Khelifa <mehdi.benhadjkhelifa@...il.com>
---
 init/initramfs_test.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/init/initramfs_test.c b/init/initramfs_test.c
index 517e5e04e5cc..fed1911b73cb 100644
--- a/init/initramfs_test.c
+++ b/init/initramfs_test.c
@@ -97,7 +97,7 @@ static void __init initramfs_test_extract(struct kunit *test)
 	} };
 
 	/* +3 to cater for any 4-byte end-alignment */
-	cpio_srcbuf = kzalloc(ARRAY_SIZE(c) * (CPIO_HDRLEN + PATH_MAX + 3),
+	cpio_srcbuf = kcalloc(ARRAY_SIZE(c), (CPIO_HDRLEN + PATH_MAX + 3),
 			      GFP_KERNEL);
 	len = fill_cpio(c, ARRAY_SIZE(c), cpio_srcbuf);
 
-- 
2.51.0