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 852613B9930; Tue, 21 Jul 2026 22:08:37 +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=1784671718; cv=none; b=qOj4pZIGpiv/78YkpmkuJVXSWe/M7OtTKQ04kiYdVGqcdn0niMM5m4sDAIpmdrzpOCpeevQf/C81fsNOFKnD9GSG1XbDro1/nmusBmOZNTViObqPYZ46JGLtv8ir6prlQe9B2vxzK4ZE3jjd4KMrIEcQGLkkyKL8WMZANs4ujJE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784671718; c=relaxed/simple; bh=yPv7Ib/vdYWDgd0ZUpEFQvmTp8nRLkB2K5DVtIJl/5U=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=pyJBToTOPHBzaPzyDxdBrVoFFu1t5sF4NTzDC5wp9QkpVAfrZFrSCVgdFcoAfFWgpiO9z3WuoXu8R3Dnr4QkxJX/a1M/aZ8L0j8UxvItHlTUCbIj9+MEgq6T3GwbX1ugrOnq/ycQ4kXWALKdAKTiqhrbrw9M+TuWxvZI9NDy6ls= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=pE5469Je; 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="pE5469Je" Received: by smtp.kernel.org (Postfix) with ESMTPSA id AF31E1F000E9; Tue, 21 Jul 2026 22:08:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1784671717; bh=L3Oup4PxU5ST9UKixQjhgFbhfL9SDtmk7pffyFd6Uw0=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=pE5469Je/f9NEgiksdKau6fJiEnBkQ00cc4OeIh3t6u4hekKE+KHFSpicpHmwkgcu 38gOn6hlEtStXc52bgYtSxCenVMtRiKWTkduHvTwPVrdgpgSCepNLV9xATEZydVeBX YqttHvLUHa4ooVnCpkSXqrlgcZ1LxVaeo99YXbww= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Herbert Xu , Sasha Levin Subject: [PATCH 5.15 350/843] crypto: rng - Free default RNG on module exit Date: Tue, 21 Jul 2026 17:19:45 +0200 Message-ID: <20260721152413.909719114@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260721152405.946368001@linuxfoundation.org> References: <20260721152405.946368001@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 5.15-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 a2bf2efb7937f9..5992cdb392c50a 100644 --- a/crypto/rng.c +++ b/crypto/rng.c @@ -232,5 +232,16 @@ 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