From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 13CD9C4332F for ; Mon, 4 Oct 2021 13:07:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id F0B8E61B43 for ; Mon, 4 Oct 2021 13:07:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234729AbhJDNJV (ORCPT ); Mon, 4 Oct 2021 09:09:21 -0400 Received: from mail.kernel.org ([198.145.29.99]:45454 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235400AbhJDNIW (ORCPT ); Mon, 4 Oct 2021 09:08:22 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 8E06061A38; Mon, 4 Oct 2021 13:02:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1633352528; bh=93Hh6ibWsXSldPNCAhMKgvpyIb4yq5wWd0g+7SliDRk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=MekRPpbkKY0tJuOyt/PhZ1//oB4QN0amhl3K1zBV8tOSbWL+mbTXXzaAT/VniqmTI 2vQX2gobuC04JVBlz3NIdZI39ajeIvBvAVgtqEiz+MJrYZhzMTRYVpLPwsp9Hau74z 3kYC/2rYqHxDMRVQ4HLRCCa8lIM6EDi5vkOjrQUE= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Dan Carpenter Subject: [PATCH 4.19 04/95] usb: musb: tusb6010: uninitialized data in tusb_fifo_write_unaligned() Date: Mon, 4 Oct 2021 14:51:34 +0200 Message-Id: <20211004125033.719802600@linuxfoundation.org> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20211004125033.572932188@linuxfoundation.org> References: <20211004125033.572932188@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Dan Carpenter commit 517c7bf99bad3d6b9360558414aae634b7472d80 upstream. This is writing to the first 1 - 3 bytes of "val" and then writing all four bytes to musb_writel(). The last byte is always going to be garbage. Zero out the last bytes instead. Fixes: 550a7375fe72 ("USB: Add MUSB and TUSB support") Signed-off-by: Dan Carpenter Cc: stable Link: https://lore.kernel.org/r/20210916135737.GI25094@kili Signed-off-by: Greg Kroah-Hartman --- drivers/usb/musb/tusb6010.c | 1 + 1 file changed, 1 insertion(+) --- a/drivers/usb/musb/tusb6010.c +++ b/drivers/usb/musb/tusb6010.c @@ -190,6 +190,7 @@ tusb_fifo_write_unaligned(void __iomem * } if (len > 0) { /* Write the rest 1 - 3 bytes to FIFO */ + val = 0; memcpy(&val, buf, len); musb_writel(fifo, 0, val); }