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=-5.7 required=3.0 tests=FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_PASS 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 ACB79C04AA7 for ; Mon, 13 May 2019 12:27:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 867A82085A for ; Mon, 13 May 2019 12:27:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728815AbfEMM1H (ORCPT ); Mon, 13 May 2019 08:27:07 -0400 Received: from mail-it1-f200.google.com ([209.85.166.200]:41266 "EHLO mail-it1-f200.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727414AbfEMM1H (ORCPT ); Mon, 13 May 2019 08:27:07 -0400 Received: by mail-it1-f200.google.com with SMTP id y62so12040416itd.6 for ; Mon, 13 May 2019 05:27:06 -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:message-id:subject:from:to; bh=nW6zb0jlmObX9jVYhqhdMplI2LMmsZqtbxf+dtA7zcY=; b=QEEhfOO7o+T+mYNySfJrjSfHII2GjOPqNjy85S6fAq0eC+TXqVPVqghlsM0pCploV+ 2jqd6fNxRfbv76+KRRQVCXNGIc69SPJ40chQKgWp1zcPXfmodYNs6hRxlUEjn+Gp558h sETfU5Lh41DFg8kQDYPzxKKnOfjXCCOXn50nv7BAQNwMTMnbqciUDGygFj8lKsRMbo0p thEIGzAmrJj98b/NKcw0XfrdSZ4ETAOYNRNJbCMbxz1hz2OgCMRgl8xxaZfbroMUknhq 9liQKgmI4zT1FtT4RemTOtD/s+8LJisOKpRUlwTDGH4+z3Ad0RUWH4g9WwLPXggV+BLV hl5A== X-Gm-Message-State: APjAAAWOWvyMJbknWYJtgr5BX5iZbLSSIdynVxtWYMfjYf7t/sNbcCZT EOktQgPwAIIrcu0Mc0cu+aSVRCjb0EZTCsd75TkUV5AYENoE X-Google-Smtp-Source: APXvYqwXQEQunpbeSpGTILe8MQXL5jpdV4uTgypbK6wPuPp6KDRzlh/SOCaE5nxiUKY19qY3oMdETGOFER+r2aP7UGusS0VSW0to MIME-Version: 1.0 X-Received: by 2002:a02:5143:: with SMTP id s64mr18976507jaa.54.1557750426017; Mon, 13 May 2019 05:27:06 -0700 (PDT) Date: Mon, 13 May 2019 05:27:06 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000caab290588c4083e@google.com> Subject: general protection fault in drain_workqueue From: syzbot To: andreyknvl@google.com, davem@davemloft.net, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, netdev@vger.kernel.org, petkan@nucleusys.com, 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: 43151d6c usb-fuzzer: main usb gadget fuzzer driver git tree: https://github.com/google/kasan.git usb-fuzzer console output: https://syzkaller.appspot.com/x/log.txt?x=17022474a00000 kernel config: https://syzkaller.appspot.com/x/.config?x=4183eeef650d1234 dashboard link: https://syzkaller.appspot.com/bug?extid=09139d1a5ed6b898e29d compiler: gcc (GCC) 9.0.0 20181231 (experimental) syz repro: https://syzkaller.appspot.com/x/repro.syz?x=15752dc8a00000 IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+09139d1a5ed6b898e29d@syzkaller.appspotmail.com pegasus 4-1:0.103: can't reset MAC kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] SMP KASAN PTI CPU: 0 PID: 5 Comm: kworker/0:0 Not tainted 5.1.0-rc3-319004-g43151d6 #6 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: usb_hub_wq hub_event RIP: 0010:__lock_acquire+0xadc/0x37c0 kernel/locking/lockdep.c:3573 Code: 00 0f 85 c1 1d 00 00 48 81 c4 10 01 00 00 5b 5d 41 5c 41 5d 41 5e 41 5f c3 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 <80> 3c 02 00 0f 85 35 1e 00 00 49 81 7d 00 00 19 01 96 0f 84 e8 f5 RSP: 0018:ffff8880a8476e08 EFLAGS: 00010002 RAX: dffffc0000000000 RBX: ffff8880a8469880 RCX: 0000000000000000 RDX: 0000000000000010 RSI: 0000000000000000 RDI: 0000000000000001 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 R10: ffff8880a8477160 R11: ffff8880a8469880 R12: 0000000000000000 R13: 0000000000000080 R14: 0000000000000000 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff8880ad000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f3a1f740000 CR3: 0000000090bc0000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_acquire+0x10d/0x2f0 kernel/locking/lockdep.c:4211 __mutex_lock_common kernel/locking/mutex.c:925 [inline] __mutex_lock+0xfe/0x12b0 kernel/locking/mutex.c:1072 drain_workqueue+0x29/0x470 kernel/workqueue.c:2934 destroy_workqueue+0x23/0x6d0 kernel/workqueue.c:4320 pegasus_dec_workqueue drivers/net/usb/pegasus.c:1133 [inline] pegasus_dec_workqueue drivers/net/usb/pegasus.c:1129 [inline] pegasus_probe+0x1073/0x15e0 drivers/net/usb/pegasus.c:1228 usb_probe_interface+0x31d/0x820 drivers/usb/core/driver.c:361 really_probe+0x2da/0xb10 drivers/base/dd.c:509 driver_probe_device+0x21d/0x350 drivers/base/dd.c:671 __device_attach_driver+0x1d8/0x290 drivers/base/dd.c:778 bus_for_each_drv+0x163/0x1e0 drivers/base/bus.c:454 __device_attach+0x223/0x3a0 drivers/base/dd.c:844 bus_probe_device+0x1f1/0x2a0 drivers/base/bus.c:514 device_add+0xad2/0x16e0 drivers/base/core.c:2106 usb_set_configuration+0xdf7/0x1740 drivers/usb/core/message.c:2023 generic_probe+0xa2/0xda drivers/usb/core/generic.c:210 usb_probe_device+0xc0/0x150 drivers/usb/core/driver.c:266 really_probe+0x2da/0xb10 drivers/base/dd.c:509 driver_probe_device+0x21d/0x350 drivers/base/dd.c:671 __device_attach_driver+0x1d8/0x290 drivers/base/dd.c:778 bus_for_each_drv+0x163/0x1e0 drivers/base/bus.c:454 __device_attach+0x223/0x3a0 drivers/base/dd.c:844 bus_probe_device+0x1f1/0x2a0 drivers/base/bus.c:514 device_add+0xad2/0x16e0 drivers/base/core.c:2106 usb_new_device.cold+0x537/0xccf drivers/usb/core/hub.c:2534 hub_port_connect drivers/usb/core/hub.c:5089 [inline] hub_port_connect_change drivers/usb/core/hub.c:5204 [inline] port_event drivers/usb/core/hub.c:5350 [inline] hub_event+0x138e/0x3b00 drivers/usb/core/hub.c:5432 process_one_work+0x90f/0x1580 kernel/workqueue.c:2269 process_scheduled_works kernel/workqueue.c:2331 [inline] worker_thread+0x7b0/0xe20 kernel/workqueue.c:2417 kthread+0x313/0x420 kernel/kthread.c:253 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 Modules linked in: ---[ end trace 01015c397d4bdcc4 ]--- RIP: 0010:__lock_acquire+0xadc/0x37c0 kernel/locking/lockdep.c:3573 Code: 00 0f 85 c1 1d 00 00 48 81 c4 10 01 00 00 5b 5d 41 5c 41 5d 41 5e 41 5f c3 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 <80> 3c 02 00 0f 85 35 1e 00 00 49 81 7d 00 00 19 01 96 0f 84 e8 f5 RSP: 0018:ffff8880a8476e08 EFLAGS: 00010002 RAX: dffffc0000000000 RBX: ffff8880a8469880 RCX: 0000000000000000 RDX: 0000000000000010 RSI: 0000000000000000 RDI: 0000000000000001 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 R10: ffff8880a8477160 R11: ffff8880a8469880 R12: 0000000000000000 R13: 0000000000000080 R14: 0000000000000000 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff8880ad000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f3a1f740000 CR3: 0000000090bc0000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 --- 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#status for how to communicate with syzbot. syzbot can test patches for this bug, for details see: https://goo.gl/tpsmEJ#testing-patches