From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 A78633B2FC0; Tue, 21 Jul 2026 20:35:40 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784666142; cv=none; b=SbCxb5qfd1N1f9RFLm7zoEpDMfiRs5oh02yLqirYx7wPpoE1sFK5vZDdg9AuhTrz3YCAh/o5aOh2vSegC02TtHcZf0Xaa5lZ6EqcE3kzbjWlK/wAAD3xZPMvhphV/EQWMJu1Ra7sxuee4By+ZaSXqDlnQ4ZzGin/GnQmVASK2MU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784666142; c=relaxed/simple; bh=WqtBYlq08hYx/dS7DwHBXgmkcwqudSE+/nQx2/k+xKg=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=VR9TbQ1YqQAoLKtjfEhWdSibKP3ucjtIJx+IpufszbfCHtHRP36S2YDZzusDfNRlrwWQq5NCHSvQ+Vn1ylM7Q/lK6hASYG3fo+yL/ZF3tN27k/EqXZred0108mwMni7qp27qsZ/Ej2yT+9/bZLF2BraTrcjX1xVu7lqA1JyylOI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=Kp4oi/IH; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="Kp4oi/IH" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 184141F000E9; Tue, 21 Jul 2026 20:35:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1784666140; bh=2NBSaqQyviaIA9dp6sNfETI5O2g7gK5LENyuczCkUGM=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=Kp4oi/IHeo0rWg8ZIIFFBpoW+UwIS4POmcDfA1o1vaibB3fU0kXQq5L8TGjWZc0z9 9ZMeCC+XC24nIjlacJxGdrMVvOlaahc+2NVLSjB+ZaULZlmh+jWpac7pHoOXhg0qCO op1Nxd+DSvp1FjxbzUjfp56om84EseWaX8lzh3pM= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Herbert Xu , Sasha Levin Subject: [PATCH 6.6 0570/1266] crypto: rng - Free default RNG on module exit Date: Tue, 21 Jul 2026 17:16:47 +0200 Message-ID: <20260721152454.620832005@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260721152441.786066624@linuxfoundation.org> References: <20260721152441.786066624@linuxfoundation.org> User-Agent: quilt/0.69 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 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Herbert Xu [ Upstream commit 606ba888b98e0d26a2c4e5c8dc0542e3ad8f0f3a ] When the rng module is removed the default RNG will be leaked. Call crypto_del_default_rng to free it if possible. Fixes: 7cecadb7cca8 ("crypto: rng - Do not free default RNG when it becomes unused") Signed-off-by: Herbert Xu Signed-off-by: Sasha Levin --- crypto/rng.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/crypto/rng.c b/crypto/rng.c index e462031fef68c6..c49115a5b2668d 100644 --- a/crypto/rng.c +++ b/crypto/rng.c @@ -259,5 +259,16 @@ void crypto_unregister_rngs(struct rng_alg *algs, int count) } EXPORT_SYMBOL_GPL(crypto_unregister_rngs); +static void __exit rng_exit(void) +{ + int err; + + err = crypto_del_default_rng(); + if (err) + pr_err("Failed delete default RNG: %d\n", err); +} + +module_exit(rng_exit); + MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("Random Number Generator"); -- 2.53.0