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 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 633BFC4360C for ; Wed, 2 Oct 2019 21:50:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 347D1218DE for ; Wed, 2 Oct 2019 21:50:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727252AbfJBVuN (ORCPT ); Wed, 2 Oct 2019 17:50:13 -0400 Received: from mail-io1-f70.google.com ([209.85.166.70]:37361 "EHLO mail-io1-f70.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726462AbfJBVuN (ORCPT ); Wed, 2 Oct 2019 17:50:13 -0400 Received: by mail-io1-f70.google.com with SMTP id u18so1392366ioc.4 for ; Wed, 02 Oct 2019 14:50:12 -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=FVFfSQ1N4e8sms9/3nhKCOCc7RVTElQVbWRSDR4Lz+w=; b=P7DKMmivBLfn6QNwqrfIkpnBbIR4g7iHEP/hIn9XpuleehS3U+stBIBkMUEhsuJ8Ro ZoKqF3dqupUEJTeh2ge/9SvW28ribAOD3Bralf0CY0fF2LbZ08U6kVqDMDFrinDeGoUl GLQaHgDFY9YMnHGR0NTEeteKnrWQabnhYTv6T+JUxuaNQCcm4/ymYGX9WB7Jz5xGVw0L JrQhl7SST28jR4CkoAQD9H/lHq4ZeRy4g/VUtqMdieX2jg8UpQ+DUiG45cq7RPBL3VnP NUo+VtEHpwv4OvHHEydM7Q7oZecXMyz4br43xy7eDB98r6pFIMiqQqRNvdzlXnuaFJhh mRTQ== X-Gm-Message-State: APjAAAWtl8yZjs+tiIQX/IXuVpxNXheBZ0rxhGwiFAfHHGSHZMq0j7ri VcoaN4q3NPtdVt3k1ZfGMw/lJbPAgEJG94HRODIjMVQ2O7ei X-Google-Smtp-Source: APXvYqy5U8vEk6m4PI9O3uAMPgUs+AjruWPqkT+uB7XC8rwgLIBqxdvCaMjkxb0GRLWGttlC7FJchJHWsKQgGspmxvME0KMoeaXE MIME-Version: 1.0 X-Received: by 2002:a92:c530:: with SMTP id m16mr6570416ili.44.1570053011937; Wed, 02 Oct 2019 14:50:11 -0700 (PDT) Date: Wed, 02 Oct 2019 14:50:11 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000000e235d0593f474ba@google.com> Subject: KMSAN: uninit-value in mts_usb_probe From: syzbot To: glider@google.com, gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, oliver@neukum.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: fe36eb20 kmsan: rework SLUB hooks git tree: https://github.com/google/kmsan.git master console output: https://syzkaller.appspot.com/x/log.txt?x=17605b6fa00000 kernel config: https://syzkaller.appspot.com/x/.config?x=40511ad0c5945201 dashboard link: https://syzkaller.appspot.com/bug?extid=5630ca7c3b2be5c9da5e compiler: clang version 9.0.0 (/home/glider/llvm/clang 80fee25776c2fb61e74c1ecb1a523375c2500b69) syz repro: https://syzkaller.appspot.com/x/repro.syz?x=11305710600000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1506787fa00000 IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+5630ca7c3b2be5c9da5e@syzkaller.appspotmail.com usb 1-1: config 0 interface 235 altsetting 0 bulk endpoint 0x5 has invalid maxpacket 0 usb 1-1: New USB device found, idVendor=05da, idProduct=009a, bcdDevice=46.6b usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 usb 1-1: config 0 descriptor?? microtek usb (rev 0.4.3): can only deal with bulk endpoints; endpoint 15 is not bulk. microtek usb (rev 0.4.3): can only deal with bulk endpoints; endpoint 10 is not bulk. microtek usb (rev 0.4.3): will this work? Command EP is not usually 5 ================================================================== BUG: KMSAN: uninit-value in mts_usb_probe+0xd1d/0xfb0 drivers/usb/image/microtek.c:754 CPU: 1 PID: 33 Comm: kworker/1:1 Not tainted 5.2.0-rc4+ #11 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+0x191/0x1f0 lib/dump_stack.c:113 kmsan_report+0x162/0x2d0 mm/kmsan/kmsan_report.c:109 __msan_warning+0x75/0xe0 mm/kmsan/kmsan_instr.c:294 mts_usb_probe+0xd1d/0xfb0 drivers/usb/image/microtek.c:754 usb_probe_interface+0xd19/0x1310 drivers/usb/core/driver.c:361 really_probe+0x1344/0x1d90 drivers/base/dd.c:513 driver_probe_device+0x1ba/0x510 drivers/base/dd.c:670 __device_attach_driver+0x5b8/0x790 drivers/base/dd.c:777 bus_for_each_drv+0x28e/0x3b0 drivers/base/bus.c:454 __device_attach+0x489/0x750 drivers/base/dd.c:843 device_initial_probe+0x4a/0x60 drivers/base/dd.c:890 bus_probe_device+0x131/0x390 drivers/base/bus.c:514 device_add+0x25b5/0x2df0 drivers/base/core.c:2111 usb_set_configuration+0x309f/0x3710 drivers/usb/core/message.c:2027 generic_probe+0xe7/0x280 drivers/usb/core/generic.c:210 usb_probe_device+0x146/0x200 drivers/usb/core/driver.c:266 really_probe+0x1344/0x1d90 drivers/base/dd.c:513 driver_probe_device+0x1ba/0x510 drivers/base/dd.c:670 __device_attach_driver+0x5b8/0x790 drivers/base/dd.c:777 bus_for_each_drv+0x28e/0x3b0 drivers/base/bus.c:454 __device_attach+0x489/0x750 drivers/base/dd.c:843 device_initial_probe+0x4a/0x60 drivers/base/dd.c:890 bus_probe_device+0x131/0x390 drivers/base/bus.c:514 device_add+0x25b5/0x2df0 drivers/base/core.c:2111 usb_new_device+0x23e5/0x2fb0 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+0x5853/0x7320 drivers/usb/core/hub.c:5432 process_one_work+0x1572/0x1f00 kernel/workqueue.c:2269 worker_thread+0x111b/0x2460 kernel/workqueue.c:2415 kthread+0x4b5/0x4f0 kernel/kthread.c:256 ret_from_fork+0x35/0x40 arch/x86/entry/entry_64.S:355 Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:187 [inline] kmsan_internal_chain_origin+0xcc/0x150 mm/kmsan/kmsan.c:349 __msan_chain_origin+0x6b/0xe0 mm/kmsan/kmsan_instr.c:190 mts_usb_probe+0xcf7/0xfb0 drivers/usb/image/microtek.c:748 usb_probe_interface+0xd19/0x1310 drivers/usb/core/driver.c:361 really_probe+0x1344/0x1d90 drivers/base/dd.c:513 driver_probe_device+0x1ba/0x510 drivers/base/dd.c:670 __device_attach_driver+0x5b8/0x790 drivers/base/dd.c:777 bus_for_each_drv+0x28e/0x3b0 drivers/base/bus.c:454 __device_attach+0x489/0x750 drivers/base/dd.c:843 device_initial_probe+0x4a/0x60 drivers/base/dd.c:890 bus_probe_device+0x131/0x390 drivers/base/bus.c:514 device_add+0x25b5/0x2df0 drivers/base/core.c:2111 usb_set_configuration+0x309f/0x3710 drivers/usb/core/message.c:2027 generic_probe+0xe7/0x280 drivers/usb/core/generic.c:210 usb_probe_device+0x146/0x200 drivers/usb/core/driver.c:266 really_probe+0x1344/0x1d90 drivers/base/dd.c:513 driver_probe_device+0x1ba/0x510 drivers/base/dd.c:670 __device_attach_driver+0x5b8/0x790 drivers/base/dd.c:777 bus_for_each_drv+0x28e/0x3b0 drivers/base/bus.c:454 __device_attach+0x489/0x750 drivers/base/dd.c:843 device_initial_probe+0x4a/0x60 drivers/base/dd.c:890 bus_probe_device+0x131/0x390 drivers/base/bus.c:514 device_add+0x25b5/0x2df0 drivers/base/core.c:2111 usb_new_device+0x23e5/0x2fb0 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+0x5853/0x7320 drivers/usb/core/hub.c:5432 process_one_work+0x1572/0x1f00 kernel/workqueue.c:2269 worker_thread+0x111b/0x2460 kernel/workqueue.c:2415 kthread+0x4b5/0x4f0 kernel/kthread.c:256 ret_from_fork+0x35/0x40 arch/x86/entry/entry_64.S:355 Local variable description: ----ep_in_set@mts_usb_probe Variable was created at: mts_usb_probe+0x53/0xfb0 drivers/usb/image/microtek.c:666 usb_probe_interface+0xd19/0x1310 drivers/usb/core/driver.c:361 ================================================================== --- This bug is generated by a bot. 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