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=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 337E7C3A5A2 for ; Tue, 3 Sep 2019 12:09:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0C200208E4 for ; Tue, 3 Sep 2019 12:09:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729307AbfICMJG (ORCPT ); Tue, 3 Sep 2019 08:09:06 -0400 Received: from mail-io1-f70.google.com ([209.85.166.70]:44456 "EHLO mail-io1-f70.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728952AbfICMIK (ORCPT ); Tue, 3 Sep 2019 08:08:10 -0400 Received: by mail-io1-f70.google.com with SMTP id f5so22808250ioo.11 for ; Tue, 03 Sep 2019 05:08:10 -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=9qcwAP8TyQOShBtKcIxQIZ1ZYBk9OO6jqYC8avhKSZk=; b=JvsedgZ+ERmRu/SHz4G/T02JDZhAnhXTc4UHzNjjfIB5RyGW/Y/eaeXoDfX7NnF8xt G0j+rcqZFEiGWCImYEFWtYaOduoFoytnDBGOXhGXO6Zmup6MPirH+YW12JcC8Hms0bOm KFF5ZpukgEt7FduUL3Ru+mp7C7X9656cA+fD05qXyWnWz7RgQCSh8YmVlN66D38/hAWx NbmH5yZOTC+meVjmxj8Cthd+twfp+OWTtGpz8VgIzvI87/zFzOs7jv7Ug1I/F9XIvHcv 3T1TQRgdcnXIUWkE5h82kIHmHl6te9tuUoQhi9NwHJJCm1qyGSdOmfEuPHDA1eBb8sV+ b6Nw== X-Gm-Message-State: APjAAAVexCEoJCxfmLd13fpPY4FPta2VM1HU4sggrm71cNbpMrwkR64a GRIBR/9f2aUNsxBjLWjEvsAEmY1KWpvKbl6nOJ7Kf8X2gmmv X-Google-Smtp-Source: APXvYqwwqbKTPGz2NUq7PxoNh2zfl4YgeuHzXT7I0s1vKHgyCKW1nN1WB7GOMBnQxAJTmXhKHLgkzswzbqEgK7KCFCwSVilEbmDL MIME-Version: 1.0 X-Received: by 2002:a02:90cb:: with SMTP id c11mr14354446jag.104.1567512489540; Tue, 03 Sep 2019 05:08:09 -0700 (PDT) Date: Tue, 03 Sep 2019 05:08:09 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000001ec3580591a4f1ad@google.com> Subject: WARNING: ODEBUG bug in appledisplay_probe From: syzbot To: 2pi@mok.nu, alex.theissen@me.com, andreyknvl@google.com, gregkh@linuxfoundation.org, 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-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: eea39f24 usb-fuzzer: main usb gadget fuzzer driver git tree: https://github.com/google/kasan.git usb-fuzzer console output: https://syzkaller.appspot.com/x/log.txt?x=101b49ea600000 kernel config: https://syzkaller.appspot.com/x/.config?x=d0c62209eedfd54e dashboard link: https://syzkaller.appspot.com/bug?extid=5bb7a3b6f59db285e759 compiler: gcc (GCC) 9.0.0 20181231 (experimental) syz repro: https://syzkaller.appspot.com/x/repro.syz?x=159cd5ea600000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=16717666600000 IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+5bb7a3b6f59db285e759@syzkaller.appspotmail.com appledisplay 1-1:0.16: Error while getting initial brightness: -110 ------------[ cut here ]------------ ODEBUG: free active (active state 0) object type: timer_list hint: delayed_work_timer_fn+0x0/0x90 include/linux/topology.h:80 WARNING: CPU: 0 PID: 12 at lib/debugobjects.c:481 debug_print_object+0x160/0x250 lib/debugobjects.c:481 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 12 Comm: kworker/0:1 Not tainted 5.3.0-rc5+ #28 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+0xca/0x13e lib/dump_stack.c:113 panic+0x2a3/0x6da kernel/panic.c:219 __warn.cold+0x20/0x4a kernel/panic.c:576 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+0x12b/0x1e0 arch/x86/kernel/traps.c:272 do_invalid_op+0x32/0x40 arch/x86/kernel/traps.c:291 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1028 RIP: 0010:debug_print_object+0x160/0x250 lib/debugobjects.c:481 Code: dd 80 ef da 85 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 bf 00 00 00 48 8b 14 dd 80 ef da 85 48 c7 c7 c0 e4 da 85 e8 e5 dd 31 ff <0f> 0b 83 05 4b 0f a8 05 01 48 83 c4 20 5b 5d 41 5c 41 5d c3 48 89 RSP: 0018:ffff8881da20f140 EFLAGS: 00010282 RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff81288cfd RDI: ffffed103b441e1a RBP: 0000000000000001 R08: ffff8881da1f9800 R09: fffffbfff11ad79a R10: fffffbfff11ad799 R11: ffffffff88d6bccf R12: ffffffff86d0dc60 R13: ffffffff812e7b70 R14: ffff8881d56f8f68 R15: ffff8881d4ee4578 __debug_check_no_obj_freed lib/debugobjects.c:963 [inline] debug_check_no_obj_freed+0x2df/0x443 lib/debugobjects.c:994 slab_free_hook mm/slub.c:1420 [inline] slab_free_freelist_hook mm/slub.c:1474 [inline] slab_free mm/slub.c:3016 [inline] kfree+0x20b/0x2f0 mm/slub.c:3957 appledisplay_probe+0x772/0xb37 drivers/usb/misc/appledisplay.c:312 usb_probe_interface+0x305/0x7a0 drivers/usb/core/driver.c:361 really_probe+0x281/0x6d0 drivers/base/dd.c:548 driver_probe_device+0x101/0x1b0 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:454 __device_attach+0x217/0x360 drivers/base/dd.c:894 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:514 device_add+0xae6/0x16f0 drivers/base/core.c:2165 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+0x101/0x1b0 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:454 __device_attach+0x217/0x360 drivers/base/dd.c:894 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:514 device_add+0xae6/0x16f0 drivers/base/core.c:2165 usb_new_device.cold+0x6a4/0xe79 drivers/usb/core/hub.c:2536 hub_port_connect drivers/usb/core/hub.c:5098 [inline] hub_port_connect_change drivers/usb/core/hub.c:5213 [inline] port_event drivers/usb/core/hub.c:5359 [inline] hub_event+0x1b5c/0x3640 drivers/usb/core/hub.c:5441 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 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