From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C6EA21EEA55; Tue, 26 Aug 2025 13:57:59 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756216679; cv=none; b=BHT4RSoiRoaHhLn3hkWwY3y0unD1hRsqeowcoG86yx0Tdw3s1MThjo5vewzWxOSzTk1ixEeDUqUz0FumcogRZAi+EnqP3L6Cw2gT+C8Nx48GFuf+oEMIREbx8DYdN+4rSDwoJrlHaknd1gppG1VS3Z4y7JuCvgpJCcsqzXXkNC0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756216679; c=relaxed/simple; bh=E8arlKsTUKT5S2EQ55UasQO9tHpBpZ05czHWBqBE4Qg=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Ot+Dtn6oRpZjaGqsmBdUMUpLMoLp1JpYrXrD2jKowwlNVdQw153l2/2w2Jum3JEo0NHUV2lDtOtNWvJOPikH3XRAMpebGDv/9KLy9JImQ4a92b8fMkUDdSoGymbONa+6NxOxiD3qO5CMLUoJTZD2NgoAp+ZfkkPxtLGd1CMFF0s= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=g2onOCEP; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="g2onOCEP" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5B058C4CEF1; Tue, 26 Aug 2025 13:57:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1756216679; bh=E8arlKsTUKT5S2EQ55UasQO9tHpBpZ05czHWBqBE4Qg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=g2onOCEP+l6+P8HS5t1n9aXYtl3x86org8svot0OAq+QOZGIrLvPmuoBUlUjsUyFi 1t/VNu+0GsoPGEspM7bmPgBHqGoomQa9RUTY0EfAOeFiasj8wc+Ge4WWZ4XUeTFoEc 8PVZNsL/kcFCBrroBJQp5FpBGIQIsX4fZ/aJm75k= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, stable@kernel.org, Liao Yuanhong , Theodore Tso Subject: [PATCH 5.15 471/644] ext4: use kmalloc_array() for array space allocation Date: Tue, 26 Aug 2025 13:09:22 +0200 Message-ID: <20250826110958.154006578@linuxfoundation.org> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20250826110946.507083938@linuxfoundation.org> References: <20250826110946.507083938@linuxfoundation.org> User-Agent: quilt/0.68 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Liao Yuanhong commit 76dba1fe277f6befd6ef650e1946f626c547387a upstream. Replace kmalloc(size * sizeof) with kmalloc_array() for safer memory allocation and overflow prevention. Cc: stable@kernel.org Signed-off-by: Liao Yuanhong Link: https://patch.msgid.link/20250811125816.570142-1-liaoyuanhong@vivo.com Signed-off-by: Theodore Ts'o Signed-off-by: Greg Kroah-Hartman --- fs/ext4/orphan.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) --- a/fs/ext4/orphan.c +++ b/fs/ext4/orphan.c @@ -590,8 +590,9 @@ int ext4_init_orphan_info(struct super_b } oi->of_blocks = inode->i_size >> sb->s_blocksize_bits; oi->of_csum_seed = EXT4_I(inode)->i_csum_seed; - oi->of_binfo = kmalloc(oi->of_blocks*sizeof(struct ext4_orphan_block), - GFP_KERNEL); + oi->of_binfo = kmalloc_array(oi->of_blocks, + sizeof(struct ext4_orphan_block), + GFP_KERNEL); if (!oi->of_binfo) { ret = -ENOMEM; goto out_put;