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 X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id ADAA8C17444 for ; Sun, 10 Nov 2019 14:07:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8316B20869 for ; Sun, 10 Nov 2019 14:07:36 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="iCV/dOMt" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726979AbfKJOH3 (ORCPT ); Sun, 10 Nov 2019 09:07:29 -0500 Received: from mail-pg1-f195.google.com ([209.85.215.195]:35312 "EHLO mail-pg1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726390AbfKJOH3 (ORCPT ); Sun, 10 Nov 2019 09:07:29 -0500 Received: by mail-pg1-f195.google.com with SMTP id q22so7461706pgk.2; Sun, 10 Nov 2019 06:07:28 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=eU8YcK7QmEzgV0st1+64+ecJ2UFrzFdTVmX7+bTQHP0=; b=iCV/dOMt1Gxk9wD35Bds5vRMgfgQvWjuluHI8tie+4FFYwR0998MKuplvLQFnBJp/B A8nzAtnI+sxOgpdl9SzBuXyOO34cvuveEM+KwgNqV3ESwmN+ni/03WGaH1dNgdXipUEL xqWsXtQev+WX9Nwdfmt+oritax4VtSLT8dzmEkCKdFhgCiWbtHStR9aqBjxqEtJQcHDz JSlKI3itKlTQXrQh24BjQrbYDZeaxrvDIEifZPLazbM5baQ93GI0FYgxIN2N+iGExYL2 AcZp3GycHovPo6RxWCYkRxL7uxwEv8+PVrEqekLpf1AybBrOvdNMVjR8d0++mGIrS5ri ObhA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=eU8YcK7QmEzgV0st1+64+ecJ2UFrzFdTVmX7+bTQHP0=; b=SoH6ArLEcOCPQYJNEPcOT8pQEYaQwATOjubG0W92eUHPRUrSBgRZL9lU0vuWglKwqe /7/xLvMpOO/5oBw7HqDKLUhXj75QM3EG7eS3hOlBZwtxUnJcivbq3jLyQwrJ9DpUq+Ir a5lcvqaIRR3wlDLmya+QMNx+KDJbd0eilZx1JIHci76Hf7OIMonziEkBKqfRP/5u9ojG h1mFwlX7tdC0sbqjP3vHYKN+SZhedzUSlV3kWNQYG9FCm6iDw+aq35rQP+pDoDcaenFQ hBI3hvno406EE1xYE0aHdLjOw0GyhFmnATU+3UOVpQWDsXRsgUkNUmsrDafRp1GaZfIe aELA== X-Gm-Message-State: APjAAAXP/LlURMUtlX24ujSKlZdoJ8NcTfW25UFXc89tSsNSbg1CCF9D 0xDllvVA8sFYTbkC11kJfRk= X-Google-Smtp-Source: APXvYqwemy1rr3PRyYeBoTH00pTVQ3zewYcQ0DbOrpCd/MlP5CKPo5HW2QO+pfqB/dc5HnjOuqoU3Q== X-Received: by 2002:a63:e801:: with SMTP id s1mr16008814pgh.213.1573394848386; Sun, 10 Nov 2019 06:07:28 -0800 (PST) Received: from debian.net.fpt ([2405:4800:58f7:3f8f:27cb:abb4:d0bd:49cb]) by smtp.gmail.com with ESMTPSA id c12sm12520388pfp.178.2019.11.10.06.07.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 10 Nov 2019 06:07:27 -0800 (PST) From: Phong Tran To: davem@davemloft.net Cc: glider@google.com, gregkh@linuxfoundation.org, hslester96@gmail.com, kstewart@linuxfoundation.org, linux-kernel-mentees@lists.linuxfoundation.org, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, netdev@vger.kernel.org, syzbot+7dc7c28d4577bbe55b10@syzkaller.appspotmail.com, syzkaller-bugs@googlegroups.com, tglx@linutronix.de, tranmanphong@gmail.com Subject: [[Patch V2]] usb: asix: cleanup the buffer in asix_read_cmd Date: Sun, 10 Nov 2019 21:07:16 +0700 Message-Id: <20191110140716.11996-1-tranmanphong@gmail.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20191107.152118.922830217121663373.davem@davemloft.net> References: <20191107.152118.922830217121663373.davem@davemloft.net> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-usb-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org This is for fixing KMSAN: uninit-value in asix_mdio_write comes from syzbot. Reported-by: syzbot+7dc7c28d4577bbe55b10@syzkaller.appspotmail.com Tested by: https://groups.google.com/d/msg/syzkaller-bugs/3H_n05x_sPU/07UIX_TUEgAJ Signed-off-by: Phong Tran --- drivers/net/usb/asix_common.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/net/usb/asix_common.c b/drivers/net/usb/asix_common.c index e39f41efda3e..f3eeb7875a4d 100644 --- a/drivers/net/usb/asix_common.c +++ b/drivers/net/usb/asix_common.c @@ -22,6 +22,8 @@ int asix_read_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index, else fn = usbnet_read_cmd_nopm; + memset(data, 0, size); + ret = fn(dev, cmd, USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, value, index, data, size); -- 2.20.1