From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oi2-f2.google.com (mail-oi2-f2.google.com [74.125.231.194]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 266342FF675 for ; Mon, 24 Aug 2026 14:15:37 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=74.125.231.194 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787580939; cv=none; b=AQrh5XXGl/nLmDTI5Xh5UdGqS5DlJ9BYQ7BejJPBqxj3EqFu2KKydlScT8gAbXwggY+8dZcknmSNMJ0uHP4H0jxWaqw1tsjFQT2qXp67AryPQWDQWR39oBrCKGYYqsZuetnW8ZArQ6wYSKNcnXb25BH0Oe/G8Z0lnhofBEZShMw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787580939; c=relaxed/simple; bh=rLMheNznZJmNpnLmvy1g5vyO1AY4iNFH8Be1EMrypKg=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=IzeAPiWhVD8TM9/nlhZyDxONMiKsCXKCj34haoNn46PkeO+nu/DZzZbQC6PVdcvVJ/UZnNQkN43vZWU3rHYYVkMl8BbGFP0OLqFgUWBZpJc2IfgJiTyw1QvR/w4RMD9Cr2ZqQ8LgGNi0E4y2VDA0Polce3DYDitxOorNWnQd0oo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=74.125.231.194 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-oi2-f2.google.com with SMTP id 5614622812f47-495d5d27acfso1708851b6e.1 for ; Mon, 24 Aug 2026 07:15:37 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1787580936; x=1788185736; h=content-type:to:from:subject:message-id:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to :content-type; bh=zjtSZ0Hk74hXFJV7KOTWyhOW5rok74z5TqFOPkrY64s=; b=i7noGUTRwjnxs1Eu9ubiQQSdS2Hw4v6GocGC6DB0LJDX7iAvOGk65I5MZEavdiig96 xC/aDVu4rS169/dQFOzOrWc+9jnAJxpC6W2xytQN4P3NqayJ6QMT+0WRH9louYzpj2fE EoCy1AlyInZMkGUkJ+1aR0y5VRkymsll+dbL018NJcCBeYyajnX1Mwry9umJyKQekbBI ajQxfBi+0I8n1Z4EB8v1g7flVUiscFPVVX/k+La+KSKfR6XQbxMScM4il3qKJBYfS5I/ D2qp5ljlskPG1UrVxoUn+INBQNrD4fiFCYqU4ZtaOZHG8ylJgg4edzSwtXM20+0JfEi6 sA9w== X-Forwarded-Encrypted: i=1; AHgh+Rqz7sfzOotaMAQcVit0X0IvS/oisDYaVBUrfTpV3YqMLDfMbn5XYyBcgExptyh+k68n9BLomHYVEUr8Y9Q=@vger.kernel.org X-Gm-Message-State: AFuF++nLIxEJ8HRKJiXVXQ5CCWS6NzXFCfIEXfAepNWipSOOBP0yl/5/ k3+S7Pod0JVrSJJqGhcyuQu4hKNL8gMcylXQ5P9vycEeXGKaO2oxIrQ04U0iG9apVF2wJBUbnkC mQStzj8+BGDZNbRmIAOw4bzDZU0xl/Ud69awdEOrwGJZGvYRlFJLvaRM40/Y= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6808:4f69:b0:4a4:a930:1f76 with SMTP id 5614622812f47-4b2ef3387cfmr26663246b6e.11.1787580936043; Mon, 24 Aug 2026 07:15:36 -0700 (PDT) Date: Mon, 24 Aug 2026 07:15:36 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6a8c5208.dbb3a75c.7844.0005.GAE@google.com> Subject: [syzbot] [usb?] [input?] INFO: task hung in usb_set_configuration From: syzbot To: dakr@kernel.org, driver-core@lists.linux.dev, gregkh@linuxfoundation.org, linux-input@vger.kernel.org, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, rafael@kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: e1e6e541c5c9 Merge tag 'thunderbolt-for-v7.3-rc1' of ssh:/.. git tree: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing console output: https://syzkaller.appspot.com/x/log.txt?x=143df815580000 kernel config: https://syzkaller.appspot.com/x/.config?x=8bdeea7ee6735f91 dashboard link: https://syzkaller.appspot.com/bug?extid=c22bb42560ec86726aba compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1783ba25580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/3b0a1f8e6a1f/disk-e1e6e541.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/f98d855e85e8/vmlinux-e1e6e541.xz kernel image: https://storage.googleapis.com/syzbot-assets/db2c3a41df6d/bzImage-e1e6e541.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+c22bb42560ec86726aba@syzkaller.appspotmail.com INFO: task kworker/0:2:733 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:2 state:D stack:26352 pid:733 tgid:733 ppid:2 task_flags:0x4208060 flags:0x00080000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:5510 [inline] __schedule+0x1325/0x47d0 kernel/sched/core.c:7234 __schedule_loop kernel/sched/core.c:7311 [inline] schedule+0xdd/0x2c0 kernel/sched/core.c:7326 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7383 __mutex_lock_common kernel/locking/mutex.c:726 [inline] __mutex_lock+0xccc/0x1bd0 kernel/locking/mutex.c:821 uevent_net_broadcast_untagged lib/kobject_uevent.c:317 [inline] kobject_uevent_net_broadcast lib/kobject_uevent.c:410 [inline] kobject_uevent_env+0xba8/0x18b0 lib/kobject_uevent.c:611 device_add+0x1173/0x1970 drivers/base/core.c:3738 usb_set_configuration+0xd97/0x1c60 drivers/usb/core/message.c:2268 usb_generic_driver_probe+0xa1/0xe0 drivers/usb/core/generic.c:250 usb_probe_device+0xef/0x400 drivers/usb/core/driver.c:293 call_driver_probe drivers/base/dd.c:628 [inline] really_probe+0x241/0xa60 drivers/base/dd.c:706 __driver_probe_device+0x20e/0x450 drivers/base/dd.c:868 driver_probe_device+0x4a/0x140 drivers/base/dd.c:898 __device_attach_driver+0x1df/0x320 drivers/base/dd.c:1026 bus_for_each_drv+0x159/0x1e0 drivers/base/bus.c:500 __device_attach+0x1e4/0x4d0 drivers/base/dd.c:1098 device_initial_probe+0xaf/0xd0 drivers/base/dd.c:1153 bus_probe_device+0x64/0x160 drivers/base/bus.c:620 device_add+0x121d/0x1970 drivers/base/core.c:3772 usb_new_device.part.0+0xcc2/0x1686 drivers/usb/core/hub.c:2708 usb_new_device drivers/usb/core/hub.c:5833 [inline] hub_port_connect drivers/usb/core/hub.c:5580 [inline] hub_port_connect_change drivers/usb/core/hub.c:5720 [inline] port_event drivers/usb/core/hub.c:5884 [inline] hub_event.cold+0x51a/0xe9d drivers/usb/core/hub.c:5966 process_one_work+0xa23/0x1940 kernel/workqueue.c:3322 process_scheduled_works kernel/workqueue.c:3405 [inline] worker_thread+0x5ef/0xe50 kernel/workqueue.c:3486 kthread+0x370/0x450 kernel/kthread.c:436 ret_from_fork+0x69a/0xc80 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Showing all locks held in the system: 7 locks held by kworker/0:1/11: #0: ffff8881062b0540 ( (wq_completion)usb_hub_wq ){+.+.}-{0:0} , at: process_one_work+0x12b1/0x1940 kernel/workqueue.c:3297 #1: ffffc900000bfd18 ( (work_completion)(&hub->events) ){+.+.}-{0:0} , at: process_one_work+0x988/0x1940 kernel/workqueue.c:3298 #2: ffff88810b3051d8 --- This report 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 issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing. If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup