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=-5.4 required=3.0 tests=FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,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 9BB27C432C0 for ; Thu, 21 Nov 2019 15:25:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 720A820674 for ; Thu, 21 Nov 2019 15:25:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727107AbfKUPZN (ORCPT ); Thu, 21 Nov 2019 10:25:13 -0500 Received: from mail-il1-f198.google.com ([209.85.166.198]:36715 "EHLO mail-il1-f198.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726613AbfKUPZM (ORCPT ); Thu, 21 Nov 2019 10:25:12 -0500 Received: by mail-il1-f198.google.com with SMTP id m16so3241817ilh.3 for ; Thu, 21 Nov 2019 07:25:10 -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=5/Y0Vx39t23ptU6jPQhVbmYRjMhm1ty9Ei09eq/gC9A=; b=MT6x3HmEvBUVyFh9J/DgpBuFRTLAvllNDkwfY4zVEocihOqZnsmeBZXzNLeuVI/T7F dUPRSfLOSyH3rsiOFAHaBw6oShBP/2glkaTybOXzVRkxz4cXEQQ5Ol1SbgKezgTvZWip LCCicg9dabXujY+uwlpb0aFEJJ3KVdJR5Uvs5QXURInylSu5nr0PEhcTnL57bBwTFejZ lmqJ6pTIZ7X9iiIjTgYD+kVOeXDnGzU8+fsz+PgMZLS68RPSU1go2Hxc9pxDmSgRj3ID BnDPV/WSZyjf2fVned97mO7VEoQBDHLUaByGOvkd8GeSx5RU99Cn3CrfEpb7AaK5Eu27 ojZA== X-Gm-Message-State: APjAAAWMFKoKZr7fVKm5w3c/mXWs7F/g3bcARLn4aW92H0WaWDOb3qfN e+OowQPLJIbtZWstXftMiXJnG3zrQ1Mx38a57yHGrxSV9wRS X-Google-Smtp-Source: APXvYqx24QzbX7sKyq85/7BIRL34ERuzFmfT0f4o2upQazdDIQDaiWYBiXJvRiaFLTa7nbXlURC2Xd8wrVjbHDvIHveClSU3Tblu MIME-Version: 1.0 X-Received: by 2002:a5e:c314:: with SMTP id a20mr8275088iok.300.1574349909859; Thu, 21 Nov 2019 07:25:09 -0800 (PST) Date: Thu, 21 Nov 2019 07:25:09 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000002129080597dce70d@google.com> Subject: general protection fault in snd_usb_create_mixer From: syzbot To: alsa-devel@alsa-project.org, andreyknvl@google.com, benquike@gmail.com, dan.carpenter@oracle.com, g@b4.vu, gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, perex@perex.cz, syzkaller-bugs@googlegroups.com, tiwai@suse.com, wang6495@umn.edu 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: 46178223 usb: gadget: add raw-gadget interface git tree: https://github.com/google/kasan.git usb-fuzzer console output: https://syzkaller.appspot.com/x/log.txt?x=176f9836e00000 kernel config: https://syzkaller.appspot.com/x/.config?x=99c88c44660624e7 dashboard link: https://syzkaller.appspot.com/bug?extid=a36ab65c6653d7ccdd62 compiler: gcc (GCC) 9.0.0 20181231 (experimental) syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1447d3bae00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=17ef3a86e00000 IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+a36ab65c6653d7ccdd62@syzkaller.appspotmail.com usb 1-1: 208:241 : does not exist usb 1-1: 208:242 : does not exist usb 1-1: 208:243 : does not exist usb 1-1: 208:244 : does not exist usb 1-1: 208:245 : does not exist usb 1-1: 208:246 : does not exist usb 1-1: 208:247 : does not exist usb 1-1: 208:248 : does not exist usb 1-1: 208:249 : does not exist usb 1-1: 208:250 : does not exist 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 CPU: 1 PID: 22 Comm: kworker/1:1 Not tainted 5.4.0-rc6+ #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: usb_hub_wq hub_event RIP: 0010:snd_usb_mixer_controls_badd sound/usb/mixer.c:2931 [inline] RIP: 0010:snd_usb_create_mixer+0xbb9/0x1890 sound/usb/mixer.c:3441 Code: ee e8 9b 23 a6 fc 41 39 ee 74 a4 e8 a1 22 a6 fc 48 8b 7c 24 28 89 ee e8 25 59 b4 fe 48 8d 78 10 48 89 c3 48 89 f8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 74 08 3c 03 0f 8e 2f 09 00 00 8b 6b 10 bf 01 RSP: 0018:ffff8881d932f0a0 EFLAGS: 00010202 RAX: 0000000000000002 RBX: 0000000000000000 RCX: ffffffff834c5dac RDX: 0000000000000000 RSI: ffffffff834c5e1b RDI: 0000000000000010 RBP: 0000000000000021 R08: ffff8881da24e000 R09: fffffbfff11aadb5 R10: fffffbfff11aadb4 R11: ffffffff88d56da7 R12: 00000000000000da R13: dffffc0000000000 R14: 00000000000000d0 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8881db300000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000043f100 CR3: 0000000006c21000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: usb_audio_probe+0xc76/0x2010 sound/usb/card.c:653 usb_probe_interface+0x305/0x7a0 drivers/usb/core/driver.c:361 really_probe+0x281/0x6d0 drivers/base/dd.c:548 driver_probe_device+0x104/0x210 drivers/base/dd.c:721 __device_attach_driver+0x1c2/0x220 drivers/base/dd.c:828 bus_for_each_drv+0x162/0x1e0 drivers/base/bus.c:430 __device_attach+0x217/0x360 drivers/base/dd.c:894 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:490 device_add+0xae6/0x16f0 drivers/base/core.c:2202 usb_set_configuration+0xdf6/0x1670 drivers/usb/core/message.c:2023 generic_probe+0x9d/0xd5 drivers/usb/core/generic.c:210 usb_probe_device+0x99/0x100 drivers/usb/core/driver.c:266 really_probe+0x281/0x6d0 drivers/base/dd.c:548 driver_probe_device+0x104/0x210 drivers/base/dd.c:721 __device_attach_driver+0x1c2/0x220 drivers/base/dd.c:828 bus_for_each_drv+0x162/0x1e0 drivers/base/bus.c:430 __device_attach+0x217/0x360 drivers/base/dd.c:894 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:490 device_add+0xae6/0x16f0 drivers/base/core.c:2202 usb_new_device.cold+0x6a4/0xe79 drivers/usb/core/hub.c:2537 hub_port_connect drivers/usb/core/hub.c:5184 [inline] hub_port_connect_change drivers/usb/core/hub.c:5324 [inline] port_event drivers/usb/core/hub.c:5470 [inline] hub_event+0x1df8/0x3800 drivers/usb/core/hub.c:5552 process_one_work+0x92b/0x1530 kernel/workqueue.c:2269 worker_thread+0x96/0xe20 kernel/workqueue.c:2415 kthread+0x318/0x420 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 Modules linked in: ---[ end trace 1d30a29898ec11e8 ]--- RIP: 0010:snd_usb_mixer_controls_badd sound/usb/mixer.c:2931 [inline] RIP: 0010:snd_usb_create_mixer+0xbb9/0x1890 sound/usb/mixer.c:3441 Code: ee e8 9b 23 a6 fc 41 39 ee 74 a4 e8 a1 22 a6 fc 48 8b 7c 24 28 89 ee e8 25 59 b4 fe 48 8d 78 10 48 89 c3 48 89 f8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 74 08 3c 03 0f 8e 2f 09 00 00 8b 6b 10 bf 01 RSP: 0018:ffff8881d932f0a0 EFLAGS: 00010202 RAX: 0000000000000002 RBX: 0000000000000000 RCX: ffffffff834c5dac RDX: 0000000000000000 RSI: ffffffff834c5e1b RDI: 0000000000000010 RBP: 0000000000000021 R08: ffff8881da24e000 R09: fffffbfff11aadb5 R10: fffffbfff11aadb4 R11: ffffffff88d56da7 R12: 00000000000000da R13: dffffc0000000000 R14: 00000000000000d0 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8881db300000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000043f100 CR3: 0000000006c21000 CR4: 00000000001406e0 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