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 66DECC33CA4 for ; Fri, 10 Jan 2020 15:34:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 4128F2082E for ; Fri, 10 Jan 2020 15:34:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728356AbgAJPeL (ORCPT ); Fri, 10 Jan 2020 10:34:11 -0500 Received: from mail-io1-f72.google.com ([209.85.166.72]:53021 "EHLO mail-io1-f72.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728245AbgAJPeL (ORCPT ); Fri, 10 Jan 2020 10:34:11 -0500 Received: by mail-io1-f72.google.com with SMTP id d10so1742075iod.19 for ; Fri, 10 Jan 2020 07:34:10 -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=2ea2up5FZ7JrvzSTMNWcmN3V3y0b3ZmC4Yl/SGBJfhg=; b=iZF41FeWHTBcJ9aXaT5gIbdtxZ7MRDo6Xs4NvJp/YChojIuwq9IT93NJP8b5fJE0nJ Pnstb/NspdyK8ZeI1tzx4fUrjVEY6l0aya2qHpw3zex+108vbwQw+iiM6fGIYa01yllt pRSKbfXfsQgcsKfXeJwhj9Wvgu2EZsnT4t1MEmRzUWOgibKc/yeNgHk0MuGYTKa6jhgg rbW+lWg7HYo7/4KA+tkRqrHiA5wwNINttWPHi56GjHWE3fQimymGFgxeqmAQRKAJsh6F Xsaxmm8zS59LI/AfotHXzWyYuS51hrP4omQMKX09NIRErLWqLlgp0Uis9GRK2mjcjz9Q Dhlg== X-Gm-Message-State: APjAAAUr6mwW+K7ho/6VWm6GAsiboZ6Hz1/aSWlxQxMGnE4PA0He/zn7 EphxObJURd6KJcwHUnx+jjjuRhoM95tMFFOgOENYZo+xkTU4 X-Google-Smtp-Source: APXvYqz3Zp2Gwdr+APsQqeHj+XwtDCbIIU6J62AH2UZ96EDUcisgHOQnMyY3XeFQODP5PAnOLsZdSX5ZPkBpRX9uGXbObUGiOGSl MIME-Version: 1.0 X-Received: by 2002:a05:6638:24f:: with SMTP id w15mr3611426jaq.130.1578670449846; Fri, 10 Jan 2020 07:34:09 -0800 (PST) Date: Fri, 10 Jan 2020 07:34:09 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000617449059bcadbd1@google.com> Subject: BUG: corrupted list in uvc_scan_chain_forward From: syzbot To: andreyknvl@google.com, laurent.pinchart@ideasonboard.com, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, linux-usb@vger.kernel.org, mchehab@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: ae179410 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=168765c6e00000 kernel config: https://syzkaller.appspot.com/x/.config?x=4b345df402514029 dashboard link: https://syzkaller.appspot.com/bug?extid=636c17630dbe1250025a compiler: gcc (GCC) 9.0.0 20181231 (experimental) syz repro: https://syzkaller.appspot.com/x/repro.syz?x=12b316aee00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=13332d49e00000 IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+636c17630dbe1250025a@syzkaller.appspotmail.com usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 usb 1-1: Product: syz usb 1-1: Manufacturer: syz usb 1-1: SerialNumber: syz usb 1-1: config 0 descriptor?? uvcvideo: Found UVC 0.00 device syz (18cd:cafe) list_add double add: new=ffff8881cdea0010, prev=ffff8881cdea0010, next=ffff8881d718f218. ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:29! invalid opcode: 0000 [#1] SMP KASAN CPU: 0 PID: 95 Comm: kworker/0:2 Not tainted 5.5.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: usb_hub_wq hub_event RIP: 0010:__list_add_valid.cold+0x26/0x3c lib/list_debug.c:29 Code: 57 ff ff ff 4c 89 e1 48 c7 c7 c0 fa fb 85 e8 4b 20 40 ff 0f 0b 48 89 f2 4c 89 e1 48 89 ee 48 c7 c7 00 fc fb 85 e8 34 20 40 ff <0f> 0b 48 89 f1 48 c7 c7 80 fb fb 85 4c 89 e6 e8 20 20 40 ff 0f 0b RSP: 0018:ffff8881d5d8f080 EFLAGS: 00010286 RAX: 0000000000000058 RBX: ffff8881cdea0010 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff812959ad RDI: ffffed103abb1e02 RBP: ffff8881cdea0010 R08: 0000000000000058 R09: fffffbfff1269aae R10: fffffbfff1269aad R11: ffffffff8934d56f R12: ffff8881d718f218 R13: ffff8881cdea0000 R14: dffffc0000000000 R15: ffff8881d718f218 FS: 0000000000000000(0000) GS:ffff8881db200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f514c22d000 CR3: 00000001c6507000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __list_add include/linux/list.h:60 [inline] list_add_tail include/linux/list.h:93 [inline] uvc_scan_chain_forward.isra.0+0x4df/0x637 drivers/media/usb/uvc/uvc_driver.c:1526 uvc_scan_chain drivers/media/usb/uvc/uvc_driver.c:1640 [inline] uvc_scan_device drivers/media/usb/uvc/uvc_driver.c:1824 [inline] uvc_probe.cold+0x1aee/0x29de drivers/media/usb/uvc/uvc_driver.c:2197 usb_probe_interface+0x310/0x800 drivers/usb/core/driver.c:361 really_probe+0x290/0xad0 drivers/base/dd.c:548 driver_probe_device+0x223/0x350 drivers/base/dd.c:721 __device_attach_driver+0x1d1/0x290 drivers/base/dd.c:828 bus_for_each_drv+0x162/0x1e0 drivers/base/bus.c:430 __device_attach+0x217/0x390 drivers/base/dd.c:894 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:490 device_add+0x1459/0x1bf0 drivers/base/core.c:2487 usb_set_configuration+0xe47/0x17d0 drivers/usb/core/message.c:2023 generic_probe+0x9d/0xd5 drivers/usb/core/generic.c:210 usb_probe_device+0xaf/0x140 drivers/usb/core/driver.c:266 really_probe+0x290/0xad0 drivers/base/dd.c:548 driver_probe_device+0x223/0x350 drivers/base/dd.c:721 __device_attach_driver+0x1d1/0x290 drivers/base/dd.c:828 bus_for_each_drv+0x162/0x1e0 drivers/base/bus.c:430 __device_attach+0x217/0x390 drivers/base/dd.c:894 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:490 device_add+0x1459/0x1bf0 drivers/base/core.c:2487 usb_new_device.cold+0x540/0xcd0 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+0x21cb/0x4300 drivers/usb/core/hub.c:5552 process_one_work+0x945/0x15c0 kernel/workqueue.c:2264 worker_thread+0x96/0xe20 kernel/workqueue.c:2410 kthread+0x318/0x420 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 Modules linked in: ---[ end trace 8c363b461f6a7f0a ]--- RIP: 0010:__list_add_valid.cold+0x26/0x3c lib/list_debug.c:29 Code: 57 ff ff ff 4c 89 e1 48 c7 c7 c0 fa fb 85 e8 4b 20 40 ff 0f 0b 48 89 f2 4c 89 e1 48 89 ee 48 c7 c7 00 fc fb 85 e8 34 20 40 ff <0f> 0b 48 89 f1 48 c7 c7 80 fb fb 85 4c 89 e6 e8 20 20 40 ff 0f 0b RSP: 0018:ffff8881d5d8f080 EFLAGS: 00010286 --- 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