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=-0.4 required=3.0 tests=FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=no 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 D78CEC0650F for ; Tue, 30 Jul 2019 09:38:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id AAB2B20665 for ; Tue, 30 Jul 2019 09:38:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731766AbfG3JiL (ORCPT ); Tue, 30 Jul 2019 05:38:11 -0400 Received: from mail-io1-f71.google.com ([209.85.166.71]:55948 "EHLO mail-io1-f71.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731737AbfG3JiI (ORCPT ); Tue, 30 Jul 2019 05:38:08 -0400 Received: by mail-io1-f71.google.com with SMTP id f22so70798195ioh.22 for ; Tue, 30 Jul 2019 02:38:07 -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=1y9Fi4xd/WD1xRzMGaMmSdy9yFpNX7CU1Q7hZgZke/M=; b=M2ve8hIDxxmm0VDDhhYwxAgDYeBj3OTVPfWFKlPy0kJWpeAXGvWvznDlrwdxk2/3qi q6W+DzlPJ91zNsGZDliA+DelX8V0EYhyLsZo7/HtYOh2oJ/uCHAgFkP33gsV4O9dUvjR hXh5cdqC/dKYXbzWkZLaVx4P83eS3yinKl6Br4Rd9Rh6T5wUtongvjfBUykcEZ7nO+cv PKg4YTIKjU/6lhv5aW3bV/V1LTUPKPzmbZeSua6J8BOa2n7dtozyTfgaW75O6j+3rfUc Jd5jkXB+GB0zanlcfeAbXkpy+C21AVgnDBtUuzmVaC4403T2xn1AjIwR7k9ypxV/3+Zv usyQ== X-Gm-Message-State: APjAAAUYEYXSr1e3iSOiAXk2v0Ee1sdjzmNJToWP498an0faJLVQ7/HZ 6KnnYuRMmXr33N49dhWezThTH+eAGa2FtandryOW15Anjz6V X-Google-Smtp-Source: APXvYqyzHgcUYFsyAT8BbaDMNAKgcUpGhf6T89n6/PeQHVk3Reb3roGrBjziZ5uCxYNJLmKhf2zKEqsNDJ1mJ2tDAaltdpf3gg9g MIME-Version: 1.0 X-Received: by 2002:a5e:c30f:: with SMTP id a15mr62119065iok.246.1564479487433; Tue, 30 Jul 2019 02:38:07 -0700 (PDT) Date: Tue, 30 Jul 2019 02:38:07 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000001bb4c6058ee2c4cf@google.com> Subject: KMSAN: kernel-usb-infoleak in ttusb_dec_send_command From: syzbot To: glider@google.com, gregkh@linuxfoundation.org, gustavo@embeddedor.com, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, syzkaller-bugs@googlegroups.com 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: f23a6010 kmsan: dropped process_future_ranges() git tree: kmsan console output: https://syzkaller.appspot.com/x/log.txt?x=10b3dac7a00000 kernel config: https://syzkaller.appspot.com/x/.config?x=40511ad0c5945201 dashboard link: https://syzkaller.appspot.com/bug?extid=0522702e9d67142379f1 compiler: clang version 9.0.0 (/home/glider/llvm/clang 80fee25776c2fb61e74c1ecb1a523375c2500b69) syz repro: https://syzkaller.appspot.com/x/repro.syz?x=10abd677a00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=167addbba00000 IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+0522702e9d67142379f1@syzkaller.appspotmail.com usb 1-1: config 0 interface 70 altsetting 0 endpoint 0x3 has an invalid bInterval 0, changing to 10 usb 1-1: New USB device found, idVendor=0b48, idProduct=1008, bcdDevice=69.06 usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 usb 1-1: config 0 descriptor?? ================================================================== BUG: KMSAN: kernel-usb-infoleak in usb_submit_urb+0x7ef/0x1f50 drivers/usb/core/urb.c:405 CPU: 1 PID: 3095 Comm: kworker/1:2 Not tainted 5.2.0-rc4+ #10 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 kmsan_internal_check_memory+0x974/0xa80 mm/kmsan/kmsan.c:573 kmsan_handle_urb+0x28/0x40 mm/kmsan/kmsan_hooks.c:617 usb_submit_urb+0x7ef/0x1f50 drivers/usb/core/urb.c:405 usb_start_wait_urb+0x143/0x410 drivers/usb/core/message.c:58 usb_bulk_msg+0x811/0x920 drivers/usb/core/message.c:257 ttusb_dec_send_command+0x47d/0xd50 drivers/media/usb/ttusb-dec/ttusb_dec.c:345 ttusb_dec_get_stb_state drivers/media/usb/ttusb-dec/ttusb_dec.c:393 [inline] ttusb_dec_init_stb drivers/media/usb/ttusb-dec/ttusb_dec.c:1421 [inline] ttusb_dec_probe+0xe31/0x4df0 drivers/media/usb/ttusb-dec/ttusb_dec.c:1680 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 created at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:200 [inline] kmsan_internal_poison_shadow+0x53/0xa0 mm/kmsan/kmsan.c:159 kmsan_kmalloc+0xa4/0x130 mm/kmsan/kmsan_hooks.c:178 kmem_cache_alloc_trace+0x503/0xae0 mm/slub.c:2793 kmalloc include/linux/slab.h:547 [inline] ttusb_dec_send_command+0x155/0xd50 drivers/media/usb/ttusb-dec/ttusb_dec.c:322 ttusb_dec_get_stb_state drivers/media/usb/ttusb-dec/ttusb_dec.c:393 [inline] ttusb_dec_init_stb drivers/media/usb/ttusb-dec/ttusb_dec.c:1421 [inline] ttusb_dec_probe+0xe31/0x4df0 drivers/media/usb/ttusb-dec/ttusb_dec.c:1680 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 Bytes 4-63 of 64 are uninitialized Memory access of size 64 starts at ffff8880ba4efac0 ================================================================== --- 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