From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oa1-f70.google.com (mail-oa1-f70.google.com [209.85.160.70]) (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 80A221428F4 for ; Mon, 23 Feb 2026 09:12:35 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.160.70 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771837956; cv=none; b=BNtfl4kIGLVawlGN+/wIE+20IQnk7Junl4dwfiSs4c3vtJTlrcSwkwCZfBYGOrWwxtqrcv+TIa9EK2pZdrduW9LbSsUMQcL45h/FyqgrAiain9TplJVQQDA+s4iv5xpPzvajyPUG5/O4crEikWGhb6VVR4UdBydDQLKTYvrYl5k= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771837956; c=relaxed/simple; bh=4IRkVJwUhAFKh+FodGnR0scevOhLPA4FqSrchY216qY=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=BZknSrmCl8AEWd3k9vX6zrLCxbKcxRFDvylYLP0z2yY3wphq4V2gIArSQJob7+2NlL3PiGcCGjzt+3PHNdKhub3k5BHJyecFz9OSPyHBfES0ox8Fb1DNqkNc1NdtOEhYbXO2P6MYmbVwyuakGnuTlDy9R1JxwDZNw7BX/eLMe+Q= 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=209.85.160.70 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-oa1-f70.google.com with SMTP id 586e51a60fabf-40f09403c56so59666080fac.1 for ; Mon, 23 Feb 2026 01:12:35 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1771837954; x=1772442754; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=3z5phDmHYu3IVjU3Vbcg2uAA1hRywQSQQ43KZNtG0Yc=; b=qCgAcDCzMfv4vLNM9A85mnYippFqh/wvtD/daI8MWAVqEKrOIA+UvF0sKjKG63dFA3 SKTozRgVlRIMWuhjHHrXYdI4tn5fWS8sSocekQC1WnGrXBP0+aIwko5X1jJMVoYRtXQl 87aiu3rKP/oCfjx+xuevUDKPK541r++EFZRu6CRAfFTFDc6xLDJN1HwmHoaxDf+kW8SR VlT06Re8BEvUtRIuK6OFJ5qOZ8G9lmUh+K2T89mCPb+6nncdHNpIMEu44ppybzUruXiv BUTpq4lGRqhuOLRTHwgIDVKx7gQKJlpYcPCJI3Hj/Mmr/dY8zCqEAlVl+s5qSDIZ5IeD FtSw== X-Forwarded-Encrypted: i=1; AJvYcCXzUnBOLcn/GHQyhlrRaooTnu5q/vp7iRhSm2DpSJl6aeTyFm4fsRT2y5epfbOKNKur1Vj3SkaUreA=@vger.kernel.org X-Gm-Message-State: AOJu0YzQLRVaubIXgiGUwwTxc6awRspgmeJVy1707ssuQr13O9geHw70 IrOPbT7Ckq+hVwOtoiB1WsCp3wfSRv8Le+hQKZTCAEqxFhK/DZRalw9uIlmJWOJ0bPKcI4BpY/d r7PjmLWg4wVl+TZ7YgQ5j9SbCpCWZRnZE7AqswWmKe3Aq1+UCo8v3oW5KS9U= Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:1988:b0:679:c7d0:d4fe with SMTP id 006d021491bc7-679c7d0d707mr3922516eaf.36.1771837954471; Mon, 23 Feb 2026 01:12:34 -0800 (PST) Date: Mon, 23 Feb 2026 01:12:34 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <699c1a02.a70a0220.2c38d7.0197.GAE@google.com> Subject: [syzbot] [media?] WARNING in smsusb_stop_streaming From: syzbot To: 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" Hello, syzbot found the following issue on: HEAD commit: 2961f841b025 Merge tag 'turbostat-2026.02.14' of git://git.. 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=17941ffa580000 kernel config: https://syzkaller.appspot.com/x/.config?x=1ff39736314a9939 dashboard link: https://syzkaller.appspot.com/bug?extid=0d6ef2b7ceb6014d756c compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/aa34762dfd3f/disk-2961f841.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/52025d84f6c4/vmlinux-2961f841.xz kernel image: https://storage.googleapis.com/syzbot-assets/66db8f0bf40c/bzImage-2961f841.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+0d6ef2b7ceb6014d756c@syzkaller.appspotmail.com ------------[ cut here ]------------ data & WORK_STRUCT_PWQ WARNING: kernel/workqueue.c:4304 at __flush_work+0xb75/0xcb0 kernel/workqueue.c:4304, CPU#0: kworker/0:6/5393 Modules linked in: CPU: 0 UID: 0 PID: 5393 Comm: kworker/0:6 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 Workqueue: usb_hub_wq hub_event RIP: 0010:__flush_work+0xb75/0xcb0 kernel/workqueue.c:4304 Code: 01 e8 3f a5 10 00 e9 bf fd ff ff 48 8b 7c 24 18 e8 c0 c1 97 00 e9 f7 f6 ff ff e8 b6 c1 97 00 e9 09 fa ff ff e8 3c 04 34 00 90 <0f> 0b 90 e9 38 fc ff ff e8 ce c1 97 00 e9 2d fb ff ff 48 89 df e8 RSP: 0018:ffffc90003856bc0 EFLAGS: 00010246 RAX: 0000000000100000 RBX: ffff8881000ba405 RCX: ffffc90011986000 RDX: 0000000000100000 RSI: ffffffff817db084 RDI: ffff88811df50000 RBP: 0000000000000004 R08: 0000000000000007 R09: 0000000000000000 R10: 0000000000000004 R11: ffff8881f5739708 R12: ffffffff817da9da R13: ffff88810006b400 R14: 0000000000000001 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8882686d3000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fce04149d40 CR3: 0000000123490000 CR4: 00000000003506f0 Call Trace: __cancel_work_sync kernel/workqueue.c:4447 [inline] cancel_work_sync+0xd1/0xf0 kernel/workqueue.c:4484 smsusb_stop_streaming+0xaa/0x210 drivers/media/usb/siano/smsusb.c:183 smsusb_term_device+0x8f/0x200 drivers/media/usb/siano/smsusb.c:345 smsusb_init_device+0xb4e/0xbb0 drivers/media/usb/siano/smsusb.c:497 smsusb_probe+0xd7f/0xe1f drivers/media/usb/siano/smsusb.c:575 usb_probe_interface+0x303/0x8f0 drivers/usb/core/driver.c:396 call_driver_probe drivers/base/dd.c:583 [inline] really_probe+0x241/0xa60 drivers/base/dd.c:661 __driver_probe_device+0x1de/0x400 drivers/base/dd.c:803 driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:833 __device_attach_driver+0x1ff/0x3e0 drivers/base/dd.c:961 bus_for_each_drv+0x159/0x1e0 drivers/base/bus.c:500 __device_attach+0x1e4/0x4d0 drivers/base/dd.c:1033 device_initial_probe+0xaf/0xd0 drivers/base/dd.c:1088 bus_probe_device+0x64/0x160 drivers/base/bus.c:574 device_add+0x11d9/0x1950 drivers/base/core.c:3689 usb_set_configuration+0xd97/0x1c60 drivers/usb/core/message.c:2210 usb_generic_driver_probe+0xa1/0xe0 drivers/usb/core/generic.c:250 usb_probe_device+0xef/0x400 drivers/usb/core/driver.c:291 call_driver_probe drivers/base/dd.c:583 [inline] really_probe+0x241/0xa60 drivers/base/dd.c:661 __driver_probe_device+0x1de/0x400 drivers/base/dd.c:803 driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:833 __device_attach_driver+0x1ff/0x3e0 drivers/base/dd.c:961 bus_for_each_drv+0x159/0x1e0 drivers/base/bus.c:500 __device_attach+0x1e4/0x4d0 drivers/base/dd.c:1033 device_initial_probe+0xaf/0xd0 drivers/base/dd.c:1088 bus_probe_device+0x64/0x160 drivers/base/bus.c:574 device_add+0x11d9/0x1950 drivers/base/core.c:3689 usb_new_device.cold+0x685/0x115c drivers/usb/core/hub.c:2695 hub_port_connect drivers/usb/core/hub.c:5567 [inline] hub_port_connect_change drivers/usb/core/hub.c:5707 [inline] port_event drivers/usb/core/hub.c:5871 [inline] hub_event+0x314d/0x4af0 drivers/usb/core/hub.c:5953 process_one_work+0x9d7/0x1920 kernel/workqueue.c:3275 process_scheduled_works kernel/workqueue.c:3358 [inline] worker_thread+0x5da/0xe40 kernel/workqueue.c:3439 kthread+0x370/0x450 kernel/kthread.c:467 ret_from_fork+0x6c3/0xcb0 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 --- 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 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