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,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 AD65DC10F0E for ; Fri, 12 Apr 2019 11:46:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 857E32186A for ; Fri, 12 Apr 2019 11:46:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728036AbfDLLqi (ORCPT ); Fri, 12 Apr 2019 07:46:38 -0400 Received: from mail-it1-f200.google.com ([209.85.166.200]:52051 "EHLO mail-it1-f200.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727295AbfDLLqN (ORCPT ); Fri, 12 Apr 2019 07:46:13 -0400 Received: by mail-it1-f200.google.com with SMTP id y127so8894114itb.1 for ; Fri, 12 Apr 2019 04:46:13 -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=Fcgnn308KWXqWGCTLLJkSiki90KP8eZcglNT1uKkWZc=; b=fHg+FMeLn1uTkIdcIRC7pUH1qAZemqGVgFGhdCyZR8S+j/dlijmQrb9HpH4/cyfmbJ OBgPVuzsiopn4HSCOvsYTPhjdVBOEL9w1wKeO6bg4CRRq8UfiEWcsx35C0unQGjb3xSd Hnkk9+qZ31AFf945ChvX8iW+qNJNhNDtwP4ex2UYzsLxzWWEAspi9ABctjnDQ5FDQbuq +0QaksgyGQ4TctTpvw3EkxE7Bs8PQpiVxoCq+gsyG8x3o+ct3W10sC4yneT6ieezbdXU 5N37F5eovrMv/Krmobb5GIfXzd2yvUeCBGW/42CQtEZg6uO5Oew6DfAlJegowMiLr0d0 Kg9A== X-Gm-Message-State: APjAAAXnEU4sagXFwwEKb4HwPcB6Qj26WRiD8uv7q/NwTKcykayonlry z+3CMHkzsxttMKzYJqSYuM6ttAlria2PYBw/J9Ake4suzro9 X-Google-Smtp-Source: APXvYqx6GEMGWDCyJAwN/J4RJNrD+6ylC47NDpE0mLZeKQHIvf2dEWnfoDwZPId6BroJYC807k4uMua5CkwODw8vYRMBsgPTd/KI MIME-Version: 1.0 X-Received: by 2002:a5d:954c:: with SMTP id a12mr2527338ios.31.1555069572964; Fri, 12 Apr 2019 04:46:12 -0700 (PDT) Date: Fri, 12 Apr 2019 04:46:12 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000007f693a058653d90c@google.com> Subject: WARNING: proc registration bug in snd_info_card_register From: syzbot To: alsa-devel@alsa-project.org, andreyknvl@google.com, joe@perches.com, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, perex@perex.cz, syzkaller-bugs@googlegroups.com, tiwai@suse.com, vkoul@kernel.org 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: 9a33b369 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=1738acd3200000 kernel config: https://syzkaller.appspot.com/x/.config?x=23e37f59d94ddd15 dashboard link: https://syzkaller.appspot.com/bug?extid=2e782bf6a60d0fcb932d compiler: gcc (GCC) 9.0.0 20181231 (experimental) syz repro: https://syzkaller.appspot.com/x/repro.syz?x=140ef0f3200000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=102c7c2d200000 IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+2e782bf6a60d0fcb932d@syzkaller.appspotmail.com usb 1-1: send failed (error -71) usb 6-1: send failed (error -71) usb 5-1: USB disconnect, device number 3 ------------[ cut here ]------------ proc_dir_entry 'asound/PODStudioUX2' already registered WARNING: CPU: 1 PID: 534 at fs/proc/generic.c:359 proc_register+0x3d9/0x550 fs/proc/generic.c:359 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 534 Comm: kworker/1:2 Not tainted 5.1.0-rc4-319354-g9a33b36 #3 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: usb_hub_wq hub_event Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0xe8/0x16e lib/dump_stack.c:113 panic+0x29d/0x5f2 kernel/panic.c:214 __warn.cold+0x20/0x48 kernel/panic.c:571 report_bug+0x262/0x2a0 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:179 [inline] fixup_bug arch/x86/kernel/traps.c:174 [inline] do_error_trap+0x130/0x1f0 arch/x86/kernel/traps.c:272 do_invalid_op+0x37/0x40 arch/x86/kernel/traps.c:291 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:973 RIP: 0010:proc_register+0x3d9/0x550 fs/proc/generic.c:359 Code: ff df 48 89 f9 48 c1 e9 03 80 3c 01 00 0f 85 61 01 00 00 48 8b 04 24 48 c7 c7 e0 a0 79 8e 48 8b b0 d0 00 00 00 e8 a7 9e 71 ff <0f> 0b 48 c7 c7 a0 90 91 91 e8 b9 10 34 0c 48 8b 4c 24 28 48 b8 00 RSP: 0018:ffff88809fb9f000 EFLAGS: 00010282 RAX: 0000000000000000 RBX: ffff88809d2df840 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff815b1e42 RDI: ffffed1013f73df2 RBP: ffff888096382a00 R08: ffff88809f9cc980 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: dffffc0000000000 R14: ffff8880a594cd38 R15: 000000000000000c proc_symlink+0x147/0x1c0 fs/proc/generic.c:451 snd_info_card_register+0x14b/0x1e0 sound/core/info.c:558 snd_card_register sound/core/init.c:772 [inline] snd_card_register+0x432/0x5f0 sound/core/init.c:736 toneport_init sound/usb/line6/toneport.c:457 [inline] toneport_init+0x256/0x63c sound/usb/line6/toneport.c:412 line6_probe+0xb01/0x1150 sound/usb/line6/driver.c:784 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+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 Kernel Offset: disabled Rebooting in 86400 seconds.. --- 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