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 6C64CC43219 for ; Mon, 29 Apr 2019 12:06:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 41BA620656 for ; Mon, 29 Apr 2019 12:06:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728143AbfD2MGT (ORCPT ); Mon, 29 Apr 2019 08:06:19 -0400 Received: from mail-it1-f199.google.com ([209.85.166.199]:42656 "EHLO mail-it1-f199.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728171AbfD2MGI (ORCPT ); Mon, 29 Apr 2019 08:06:08 -0400 Received: by mail-it1-f199.google.com with SMTP id t196so9223635ita.7 for ; Mon, 29 Apr 2019 05:06:07 -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=rDeQFW7ur3bD5DVlx58zRUEpG0d8EGxbNzUv5hd9aJg=; b=YFAHm6O6ig+msiZDydnYqGpxS5n9/6b2k/OqnhZme9P5QF9nqdDK6TTMVlapkPyYJK nODXfEwK87VtYnvxVobKYYkvepOiXFFUuIf6IdF90LfHxNvQGwIRsUdy9CW7EkNQ6Kj7 VSD3RMOxpglmGePNRi528IwQN83TBOlIeOhODrGxtRGXtZLUZp4JvZkADcO6EpLJuuij KgYSvpAOyyjit3/Zip4lICmF2Q705tOmmyFX5HrOameAJ5T9aFnaLWQy0b+tVuMa6VUt rr5d6A7iLl3nZSgG50k6IjzgApLrBtrI7/osDZJEPUv4oEfJPaya51oARNx4DUCdLSor /ZGg== X-Gm-Message-State: APjAAAVvxsgxjmtR+atW7hFY5uiLDNoWiAJwWsw4YZ/VlrXqevJMwgM5 EYNqLYVS7x6TCtBK5Sz8gsswHUiC2UwJwacH43V3JFzGoxgP X-Google-Smtp-Source: APXvYqxWAijp8HtMDdopw8UkXEtp9e/OiyQ3ux05IGIpuY2mfbZjMM+THEIzV7KtLPe6JzPQC/s7pJMB0OE8a8+OSiqakCebPZ6r MIME-Version: 1.0 X-Received: by 2002:a6b:f008:: with SMTP id w8mr29131590ioc.251.1556539567488; Mon, 29 Apr 2019 05:06:07 -0700 (PDT) Date: Mon, 29 Apr 2019 05:06:07 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000ffc8c80587aa1bb1@google.com> Subject: BUG: unable to handle kernel paging request in au0828_usb_disconnect 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: 43151d6c 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=106c9498a00000 kernel config: https://syzkaller.appspot.com/x/.config?x=4183eeef650d1234 dashboard link: https://syzkaller.appspot.com/bug?extid=15e91d49c4c757c3d363 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+15e91d49c4c757c3d363@syzkaller.appspotmail.com usb 5-1: 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 fffffffc4508a958 #PF error: [normal kernel read fault] PGD 1167e067 P4D 1167e067 PUD 0 Oops: 0000 [#1] SMP KASAN PTI CPU: 1 PID: 17 Comm: kworker/1:0 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: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 b0 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 b0 39 91 48 b8 00 00 00 00 00 fc ff df 48 89 d6 48 RSP: 0018:ffff8880a84f70e8 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: ffff8880ad12dfc0 RCX: 1fffffff88a1152b RDX: ffff8880ad12dfc8 RSI: 0000000000000004 RDI: fffffffc4508a958 RBP: ffffffff9679df1f R08: 0000000000000000 R09: ffffed10122cb31e R10: ffffed10122cb31d R11: ffff8880916598eb R12: ffff8880ad12dfd0 R13: 000000000002dfc0 R14: ffff8880a84db100 R15: ffff8880916598e8 FS: 0000000000000000(0000) GS:ffff8880ad100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: fffffffc4508a958 CR3: 00000000824b6000 CR4: 00000000001406e0 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: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 worker_thread+0x9b/0xe20 kernel/workqueue.c:2415 kthread+0x313/0x420 kernel/kthread.c:253 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 Modules linked in: CR2: fffffffc4508a958 ---[ end trace e04421c5fdf22ecf ]--- 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 b0 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 b0 39 91 48 b8 00 00 00 00 00 fc ff df 48 89 d6 48 RSP: 0018:ffff8880a84f70e8 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: ffff8880ad12dfc0 RCX: 1fffffff88a1152b RDX: ffff8880ad12dfc8 RSI: 0000000000000004 RDI: fffffffc4508a958 RBP: ffffffff9679df1f R08: 0000000000000000 R09: ffffed10122cb31e R10: ffffed10122cb31d R11: ffff8880916598eb R12: ffff8880ad12dfd0 R13: 000000000002dfc0 R14: ffff8880a84db100 R15: ffff8880916598e8 FS: 0000000000000000(0000) GS:ffff8880ad100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: fffffffc4508a958 CR3: 00000000824b6000 CR4: 00000000001406e0 --- 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.