Received: by 2002:a25:c593:0:0:0:0:0 with SMTP id v141csp4581259ybe; Mon, 16 Sep 2019 14:53:40 -0700 (PDT) X-Google-Smtp-Source: APXvYqxlZIgCmiAaVxN3qH+SRjPtx1xmyUWI8wufLmfwFxA7zQPRO+TGXPxuWHNhRxTiFLSM5WYh X-Received: by 2002:a17:906:d185:: with SMTP id c5mr1502040ejz.139.1568670820860; Mon, 16 Sep 2019 14:53:40 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1568670820; cv=none; d=google.com; s=arc-20160816; b=Gq0y2415hwVs43XjdIcMUMxVPolxZOno4SGocNEO73nlmzeyaQTi8U3xZEolL525Qo BNjq+Np/rCNk+qncQpldlWi4ft9u1KdMCcvN8epFEtY3GcMWmHkYx+f0dxzGffFYRbwt EGcJeGzgx6uqvkOiGrGzBVNgUSlV9XGESP72tjeB0+JIPRIEGgESXEwwkZJylEQexy86 CUTZsAOw/j6iH7cx5aMXTI2b3owmJHERBfRdTyDAshvYpsQOogVV9c/rO3LTRd57O5ch +e8ybqH6uI8JCVmnd3IssUX1c0ucAII+LhXsJT2ACyqYoUFsBiEDwm8t2XEFbIbrurlC L42g== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:to:from:subject:message-id:in-reply-to :date:mime-version; bh=l4OIlRI8e5kXyN9A1IopcKJhkWlrZc3Q+7bfrloPlRE=; b=AMFooD5b6/o5aQLOa6RrhdkrsJgoksUqNVtG0975evrNUjlQslgCH/CIJjeCPMAENp 7DAC98RxKy7cMyzeY1dIS5ZPE1HNO+lq9TtX4GPqEJrwxtkKtHYBUuLpgfP5wWAm3T6M B0oKeuBpelgiua8dmlfA6hscxovYZJhzVKTrPqCIJndA5o2fWey6IY/W2w3PJYSJSFIs hK87T1FBbPlQ3p4DNVfec1bVTZVpJFQbGSCCEezX9CKvrpM/m3f297oNNTUPSYYmmcdg 8TQj5DVaJPTJ4WnH7/O9t4H3Oqpm2cproD2wdBP/2xxQe7uF+QObZSa+tw2N7M95TZn1 le1Q== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=appspotmail.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id op20si88967ejb.169.2019.09.16.14.53.16; Mon, 16 Sep 2019 14:53:40 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=appspotmail.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730467AbfIPUNC (ORCPT + 99 others); Mon, 16 Sep 2019 16:13:02 -0400 Received: from mail-io1-f72.google.com ([209.85.166.72]:41450 "EHLO mail-io1-f72.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732965AbfIPUNC (ORCPT ); Mon, 16 Sep 2019 16:13:02 -0400 Received: by mail-io1-f72.google.com with SMTP id e6so1635783ios.8 for ; Mon, 16 Sep 2019 13:13:02 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:date:in-reply-to:message-id:subject :from:to; bh=l4OIlRI8e5kXyN9A1IopcKJhkWlrZc3Q+7bfrloPlRE=; b=uHwTe22OkFygLBl67FCTUU0Sti4zxM99Fm/kEXRM2YfXRSvgALzgkU2FZaoMdT+CEj AFmtZMbGIDQKMyHf3Iwj5mPQ4b+C1H4h19jLQIYFyrMIufp4boqjZnsaoB9jEbL/VKb9 Fgg77yOjn+yjI27WlHBONah3euPxo2RkpB2W7qREbqq8bOA2ZoBB6G8tMIHwicryNTVG MyFCwciRcE5NoZ1q1MC52+4OIjV2OAtFCNz0KJ5DJGcQEw7fG7KlMc0/qKFmJqoIHUpH GSyRUuVDYDn7AbmgF2bxKXGOeCs38eL2Xeu5KzmsehzhRP7ph5Ha9omOcG7lufJOaziC mGag== X-Gm-Message-State: APjAAAXZ6gD5qMI4gBLdLbhUub9M4/9/Htvrq4InGPopoZs5F22WFOhQ UGHmJdGlg+Mqh4qUgL/YWpN3DeDm12nSuWJpW6QUGD5PKZeu MIME-Version: 1.0 X-Received: by 2002:a02:7113:: with SMTP id n19mr1961225jac.82.1568664781716; Mon, 16 Sep 2019 13:13:01 -0700 (PDT) Date: Mon, 16 Sep 2019 13:13:01 -0700 In-Reply-To: X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000001603470592b13bfc@google.com> Subject: Re: INFO: rcu detected stall in dummy_timer From: syzbot To: andreyknvl@google.com, balbi@kernel.org, chunfeng.yun@mediatek.com, gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, stern@rowland.harvard.edu, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, syzbot has tested the proposed patch and the reproducer did not trigger crash: Reported-and-tested-by: syzbot+b24d736f18a1541ad550@syzkaller.appspotmail.com Tested on: commit: f0df5c1b usb-fuzzer: main usb gadget fuzzer driver git tree: https://github.com/google/kasan.git kernel config: https://syzkaller.appspot.com/x/.config?x=5c6633fa4ed00be5 dashboard link: https://syzkaller.appspot.com/bug?extid=b24d736f18a1541ad550 compiler: gcc (GCC) 9.0.0 20181231 (experimental) patch: https://syzkaller.appspot.com/x/patch.diff?x=1267f9c3600000 Note: testing is done by a robot and is best-effort only.