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=-0.7 required=3.0 tests=FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED autolearn=ham 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 E81C8C4360F for ; Sat, 2 Mar 2019 11:45:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id BD33220863 for ; Sat, 2 Mar 2019 11:45:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726520AbfCBLpH (ORCPT ); Sat, 2 Mar 2019 06:45:07 -0500 Received: from mail-it1-f198.google.com ([209.85.166.198]:42952 "EHLO mail-it1-f198.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726295AbfCBLpG (ORCPT ); Sat, 2 Mar 2019 06:45:06 -0500 Received: by mail-it1-f198.google.com with SMTP id j127so718725itj.7 for ; Sat, 02 Mar 2019 03:45:06 -0800 (PST) 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=s7R6v8IwdlGPxl0cTjVrsrNU/QmcK0RcG8SCwLlaGGw=; b=TflHsPlUaA6fdMo6/+DwrgA+eZTJmgGHYuIpCO8/BjbadWlkZ4291IUqgNGf4Nt6h8 vC8RvWriHcVG3gQUVJFqlMnn3wBbG7a5mJR6mu3JdDsd4UnlH3qmzEmMHoliCacv8d/G k9/loXGZuOIznQ4YquRdBWdoRNp6BINTnnV5+stj3pB50JTK2zi/uNdxxnSkGxW5Az3t Z7qm9F3WS+6oISAwj5TTKkZCt4F72RN24IXMVMI6FT/asem5WNsQDvJ2tEm1Nt84KMA8 QXxT0TPpLjrNrJ7g/neVoDP7o4DZjTT1p01LW+SqEuriuC05ejOAmTflil0glB3Rkhfa lXIw== X-Gm-Message-State: APjAAAVj8gnbDeTtZsgviWHL3ETSbTiCYUpfDAB3sDYGP1Cit+K/ybvf RO+cBUH8t+wiLavYNj7PWzsyMYtm76dNG8IfmzZfWd9jyQp/ X-Google-Smtp-Source: AHgI3IZUM9RghBA+3GHZ32szWazgPOyJRqyblSbiX0/fKnGu1Cfi/kaCVUxP0Koavv1zJBTf1/kAi0ZlAUjk5rlh0D6H9OXBMXTD MIME-Version: 1.0 X-Received: by 2002:a24:6cd5:: with SMTP id w204mr6212057itb.16.1551527105640; Sat, 02 Mar 2019 03:45:05 -0800 (PST) Date: Sat, 02 Mar 2019 03:45:05 -0800 In-Reply-To: <000000000000299b190583172880@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000fdc7da05831b0df8@google.com> Subject: Re: BUG: MAX_STACK_TRACE_ENTRIES too low! From: syzbot To: darrick.wong@oracle.com, linux-kernel@vger.kernel.org, linux-xfs@vger.kernel.org, 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 syzbot has found a reproducer for the following crash on: HEAD commit: c63e9e91a254 Add linux-next specific files for 20190301 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=10856157200000 kernel config: https://syzkaller.appspot.com/x/.config?x=f5875f9dc6e009b2 dashboard link: https://syzkaller.appspot.com/bug?extid=78923eea7cf44364f4fb compiler: gcc (GCC) 9.0.0 20181231 (experimental) syz repro: https://syzkaller.appspot.com/x/repro.syz?x=149ae1eb200000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15ee41eb200000 IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+78923eea7cf44364f4fb@syzkaller.appspotmail.com BUG: MAX_STACK_TRACE_ENTRIES too low! turning off the locking correctness validator. CPU: 0 PID: 1176 Comm: kworker/u5:0 Not tainted 5.0.0-rc8-next-20190301 #1 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: hci1 hci_power_on Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 save_trace kernel/locking/lockdep.c:467 [inline] save_trace.cold+0x14/0x19 kernel/locking/lockdep.c:437 mark_lock+0x2fb/0x1380 kernel/locking/lockdep.c:3401 mark_irqflags kernel/locking/lockdep.c:3304 [inline] __lock_acquire+0xf2c/0x3fb0 kernel/locking/lockdep.c:3644 lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:4202 process_one_work+0x8df/0x1790 kernel/workqueue.c:2244 worker_thread+0x98/0xe40 kernel/workqueue.c:2415 kthread+0x357/0x430 kernel/kthread.c:253 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352