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=-5.6 required=3.0 tests=FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_PASS,URIBL_BLOCKED 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 51E88C282DD for ; Thu, 18 Apr 2019 12:36:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2909121850 for ; Thu, 18 Apr 2019 12:36:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388686AbfDRMgG (ORCPT ); Thu, 18 Apr 2019 08:36:06 -0400 Received: from mail-it1-f200.google.com ([209.85.166.200]:55451 "EHLO mail-it1-f200.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727807AbfDRMgG (ORCPT ); Thu, 18 Apr 2019 08:36:06 -0400 Received: by mail-it1-f200.google.com with SMTP id g184so2055964ita.5 for ; Thu, 18 Apr 2019 05:36:05 -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=i+tomZsCMzsnHr3874poPaxJCpmgaqjJEfGN6uwmJv0=; b=Q4ov6wckV6iFPg6+Ov/IWcguAmxt/XFzPb1HC1V4VxDwpSNMXsXDMezl45Oiu84Qu0 K1gBuYZbGGYUXWRTO/S/9eKakzcP0cDhNisi4KW7qwLcZUbb9yQZwN6EyCgUA+W4GXse GG0VSAuNxKQXzeSd3Oo0g0DvvGVqovphJoUcFepD5ajHforgRZSUmBzFjiBf2KUOoA7g jFb/7yhs1Q10F/Ump/jDeXRinuOeH3AnXKwJPgP9b/Q96U8RJiJix9h1enQYZ/839F91 xHovpfvNOTf9+GBHPxnl+Nc7YEPqRpR/pMRJg1sjvWUX9nJgNraTkcVYrJSe8ADNY2RM Z7Ow== X-Gm-Message-State: APjAAAW1RnLSDs8ZgL8ohC+l3JvxZxBkhib9lpx+HpGiF1es1wAVDu6r pb1u35oVXeAjpPo3SDwOZc/jzGAAUWiNqpOqfyZd2nKwh61D X-Google-Smtp-Source: APXvYqxNc5aU67epG4FuCxsatGM/4m1OETB/YtPcWPEF5e6Rzc4NdVhbYtgiItDICqxkcrTJ3kkGle02EMYEDf7nNg9b3juDh6xn MIME-Version: 1.0 X-Received: by 2002:a6b:7108:: with SMTP id q8mr3957038iog.85.1555590965482; Thu, 18 Apr 2019 05:36:05 -0700 (PDT) Date: Thu, 18 Apr 2019 05:36:05 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000e9e1990586cd3e40@google.com> Subject: BUG: unable to handle kernel paging request in osq_lock From: syzbot To: andreyknvl@google.com, brad@nextdimension.cc, hans.verkuil@cisco.com, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, linux-usb@vger.kernel.org, mchehab@kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes Sender: linux-usb-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org Hello, syzbot found the following crash on: HEAD commit: d34f9519 usb-fuzzer: main usb gadget fuzzer driver git tree: https://github.com/google/kasan/tree/usb-fuzzer console output: https://syzkaller.appspot.com/x/log.txt?x=1338d3e3200000 kernel config: https://syzkaller.appspot.com/x/.config?x=c73d1bb5aeaeae20 dashboard link: https://syzkaller.appspot.com/bug?extid=e5c9afc3e1eed1dfc2b0 compiler: gcc (GCC) 9.0.0 20181231 (experimental) Unfortunately, I don't have any reproducer for this crash yet. IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+e5c9afc3e1eed1dfc2b0@syzkaller.appspotmail.com au0828: recv_control_msg() Failed receiving control message, error -71. au8522_writereg: writereg error (reg == 0x106, val == 0x0001, ret == -5) usb 1-1: selecting invalid altsetting 5 au0828: Failure setting usb interface0 to as5 au0828: au0828_usb_probe() au0828_analog_register failed to register on V4L2 BUG: unable to handle kernel paging request at fffffffc45040758 #PF error: [normal kernel read fault] PGD 1167e067 P4D 1167e067 PUD 0 Oops: 0000 [#1] SMP KASAN PTI CPU: 0 PID: 5 Comm: kworker/0:0 Not tainted 5.1.0-rc5-319617-gd34f951 #4 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: usb_hub_wq hub_event RIP: 0010:decode_cpu kernel/locking/osq_lock.c:34 [inline] RIP: 0010:osq_lock+0xfd/0x5a0 kernel/locking/osq_lock.c:111 Code: 48 63 e8 48 b8 00 00 00 00 00 fc ff df 48 8d 3c ed 60 c0 39 91 48 89 f9 48 c1 e9 03 80 3c 01 00 0f 85 2c 04 00 00 48 8d 53 08 <4c> 03 2c ed 60 c0 39 91 48 b8 00 00 00 00 00 fc ff df 48 89 d6 48 RSP: 0018:ffff8880a846f0e8 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: ffff8880ad02dfc0 RCX: 1fffffff88a080eb RDX: ffff8880ad02dfc8 RSI: 0000000000000004 RDI: fffffffc45040758 RBP: ffffffff967948df R08: 0000000000000000 R09: ffffed1012299b1e R10: ffffed1012299b1d R11: ffff8880914cd8eb R12: ffff8880ad02dfd0 R13: 000000000002dfc0 R14: ffff8880a8443100 R15: ffff8880914cd8e8 FS: 0000000000000000(0000) GS:ffff8880ad000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: fffffffc45040758 CR3: 000000009f4ac000 CR4: 00000000001406f0 Call Trace: mutex_optimistic_spin kernel/locking/mutex.c:630 [inline] __mutex_lock_common kernel/locking/mutex.c:928 [inline] __mutex_lock+0x27d/0x12b0 kernel/locking/mutex.c:1072 au0828_usb_disconnect+0xa3/0x130 drivers/media/usb/au0828/au0828-core.c:194 au0828_usb_probe.cold+0x121/0x7d8 drivers/media/usb/au0828/au0828-core.c:661 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:2021 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+0x1398/0x3b00 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: CR2: fffffffc45040758 ---[ end trace 41843cb8c360ab9e ]--- RIP: 0010:decode_cpu kernel/locking/osq_lock.c:34 [inline] RIP: 0010:osq_lock+0xfd/0x5a0 kernel/locking/osq_lock.c:111 Code: 48 63 e8 48 b8 00 00 00 00 00 fc ff df 48 8d 3c ed 60 c0 39 91 48 89 f9 48 c1 e9 03 80 3c 01 00 0f 85 2c 04 00 00 48 8d 53 08 <4c> 03 2c ed 60 c0 39 91 48 b8 00 00 00 00 00 fc ff df 48 89 d6 48 RSP: 0018:ffff8880a846f0e8 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: ffff8880ad02dfc0 RCX: 1fffffff88a080eb RDX: ffff8880ad02dfc8 RSI: 0000000000000004 RDI: fffffffc45040758 RBP: ffffffff967948df R08: 0000000000000000 R09: ffffed1012299b1e R10: ffffed1012299b1d R11: ffff8880914cd8eb R12: ffff8880ad02dfd0 R13: 000000000002dfc0 R14: ffff8880a8443100 R15: ffff8880914cd8e8 FS: 0000000000000000(0000) GS:ffff8880ad000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: fffffffc45040758 CR3: 000000009f4ac000 CR4: 00000000001406f0 --- 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.