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 50111C43387 for ; Wed, 2 Jan 2019 10:59:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 22924218CD for ; Wed, 2 Jan 2019 10:59:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729412AbfABK7F (ORCPT ); Wed, 2 Jan 2019 05:59:05 -0500 Received: from mail-io1-f71.google.com ([209.85.166.71]:35342 "EHLO mail-io1-f71.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727294AbfABK7E (ORCPT ); Wed, 2 Jan 2019 05:59:04 -0500 Received: by mail-io1-f71.google.com with SMTP id x12so14430486ioj.2 for ; Wed, 02 Jan 2019 02:59:04 -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:message-id:subject:from:to; bh=7kIwTGDc2L0rBdF04C05OGGBVS4kGFVcYFORxqN9Fxw=; b=uXhUJt4IUNK9vt66PpQER5BOzP/F4r+D285BTMOJIgY2e7Gx+NbsHUjXVZQ/2zmzNe yi5Wir99l5bHefTKpBmn7LOONDCNH8G6ATG3Yv8Jf75ccUvwAMFN2dZsARfVoYhzxalH ppMPVPvYR3DSSNw0MT3Ro/tN8ghDyTL4Ewi4XR+hwy+/r81L7AFycvbZfZu893msJYHj Db/NTdoFxYvS/pq6UOX6jJCJ9VlJKFmAz1isVOwH8DliUADHLThcQTQvk5L4Fukun6g9 7b8wdv1r9XVSSN94yRBfaJDXAkwicfy5MuhbZcoB5sAkvssUEpl+OmN+ebfigI0FlhTn yazw== X-Gm-Message-State: AA+aEWb9MiFn1EMpWJr6qNPqcNxqoFmqX+QZvz4mTpmvE4hGH9Ey9HCc 0CdCE6L8pUMbG641PzjZ9refS09DsHX0/pJX6LdjTtqgVPL4 X-Google-Smtp-Source: AFSGD/WFMRmoRDPuifgbbO+DzLbWveB0qA7K2IcqdEPrWLpnGpurivkSaxLlFu+57QVhf0Sc9RBfnJOeCmhlzEy7SgiW/g1XmoLL MIME-Version: 1.0 X-Received: by 2002:a02:b807:: with SMTP id o7mr34392748jam.23.1546426744225; Wed, 02 Jan 2019 02:59:04 -0800 (PST) Date: Wed, 02 Jan 2019 02:59:04 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000c2c4b9057e7788d1@google.com> Subject: WARNING: lock held when returning to user space! (3) From: syzbot To: linux-kernel@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 Hello, syzbot found the following crash on: HEAD commit: 903b77c63167 Merge tag 'linux-kselftest-4.21-rc1' of git:/.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=1424673b400000 kernel config: https://syzkaller.appspot.com/x/.config?x=53a2f2aa0b1f7606 dashboard link: https://syzkaller.appspot.com/bug?extid=42e36e1ae3de3f22a7ed compiler: gcc (GCC) 8.0.1 20180413 (experimental) syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1453eabf400000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=14a492bf400000 IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+42e36e1ae3de3f22a7ed@syzkaller.appspotmail.com RBP: 00000000006cf018 R08: 0000000000000001 R09: 0000000000000032 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000005 R13: ffffffffffffffff R14: 0000000000000000 R15: 0000000000000000 ================================================ WARNING: lock held when returning to user space! 4.20.0+ #395 Not tainted ------------------------------------------------ syz-executor520/8085 is leaving the kernel with locks still held! --- This bug is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this bug report. See: https://goo.gl/tpsmEJ#bug-status-tracking for how to communicate with syzbot. syzbot can test patches for this bug, for details see: https://goo.gl/tpsmEJ#testing-patches