From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-ot1-f78.google.com (mail-ot1-f78.google.com [209.85.210.78]) (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 06BE430F93D for ; Thu, 11 Dec 2025 13:41:24 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.78 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1765460486; cv=none; b=bHtPSxP5QwQZxn46JTRTFCBGY45+SEz3Q83dIy3Q3JhTnd5BwOqI/p8r4a1wLF/mKZpnx5If66ttr98gYdMNhrEGx+BCKOAaPPLgOpBPh0rVmc3aiUh/cJX78ZjGqt2hEsr06KYoGGTG2bi007ixgrJrDcrhvLE4USqi5ZYVn/M= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1765460486; c=relaxed/simple; bh=CDE1ttNTa5AMSgjBBmBwDvE2XcaWTCNIO92rjWyj8sE=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=ah4CWjRjg1YAs1hptY0MK4tJSfJ0jbKpkRYfZjdxsumsFDrItEiD9LPwpMxs9yNWvxSgTiJ2vX151jsoyO+4ashUKSvqcVTs61oAU+Q/ttbcMA74eenJpK7mpTaeWuGNe9fl4RkT7VcGOT6efe23acx7TzC1jQqNre0aAKTthrM= 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=209.85.210.78 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-ot1-f78.google.com with SMTP id 46e09a7af769-7c702d1a4f7so127960a34.3 for ; Thu, 11 Dec 2025 05:41:24 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1765460484; x=1766065284; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=ZdhV1m8aeGU2YokLDtNvPFAfeUluHSpx/80Pd07MRPc=; b=cdwQQDyJlSogYRe2ojMEoLlx/YMHYvdem83SLPa7R9gWM9PxtydjfWE/FZ/1JJiOVE bfTNxiyxH8+RC3ezRf7/wSxY+bsqZN48vyvVwsVkzi2/5e9jG/DHGMqfl5M84ISjeuU5 i6qatQl5XfWJKXFsWUuaYTdoz48+94mUtdQU4SnHeYlxhhLtKxdRkUpJKr4BRqjyF1zk khMOP/aok6tnYTzZHYLpYvyiVfgDU+eMq4w7zR6JhjHeJJOYjpC2nwDsfMkKIJdvuaoh zAIPrJTz1d2cxMYytgCMlU+5EYu8wdL/AMFwRPKzjQQMpsQNaeWVj5WTBHdvz5mtQ8/+ 2YDQ== X-Forwarded-Encrypted: i=1; AJvYcCUPSm2FkHh/HuyrN/tRshFSeufhwKwlKISJDP6U/WBvaZO9/A3pXjmIOdGVPf0y6pnIqUXdLe0=@vger.kernel.org X-Gm-Message-State: AOJu0Yx3yX0raqwVdtEgz7XCRWGbOwyOxXdjK6mnYbKlPdwCqGZMsq5C 4vIRjiVtAlIDMIYYcbdp4Ad7rCHGlVNYwooiEgyuvSnGkppPUgMnubk3er8+MK48BMiWCSp6+6h Ht1v9+Hg/RY+5t9cjZJSu6LJF5AOV637dqnHSX0rrKM0WUATCkFMP+jUoZ8k= X-Google-Smtp-Source: AGHT+IGNnZYJRKkVKEoqr1aOebOWcitP/eJc29wiPAqSj9kqrQC8LVU+8N0bc9k787UTSjA5rJaWEWXkMS8eEhLrT67SHYwSjOZO Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:3084:b0:659:9a49:8ff5 with SMTP id 006d021491bc7-65b2accaa61mr3088477eaf.34.1765460484238; Thu, 11 Dec 2025 05:41:24 -0800 (PST) Date: Thu, 11 Dec 2025 05:41:24 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <693aca04.050a0220.4004e.0346.GAE@google.com> Subject: [syzbot] [wireless?] WARNING in __alloc_workqueue From: syzbot To: linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, linux-wireless@vger.kernel.org, netdev@vger.kernel.org, pkshih@realtek.com, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 37bb2e7217b0 Merge tag 'staging-6.19-rc1' of git://git.ker.. 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=125bceb4580000 kernel config: https://syzkaller.appspot.com/x/.config?x=e79f218bc0cd167b dashboard link: https://syzkaller.appspot.com/bug?extid=392a2c3f461094707435 compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1046f21a580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12b9521a580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/26124775173b/disk-37bb2e72.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/bd4182168b83/vmlinux-37bb2e72.xz kernel image: https://storage.googleapis.com/syzbot-assets/a78be0ee345d/bzImage-37bb2e72.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+392a2c3f461094707435@syzkaller.appspotmail.com usb 3-1: SerialNumber: syz usb 3-1: config 0 descriptor?? ------------[ cut here ]------------ WARNING: kernel/workqueue.c:5701 at __alloc_workqueue+0x114c/0x1810 kernel/workqueue.c:5701, CPU#0: kworker/0:2/121 Modules linked in: CPU: 0 UID: 0 PID: 121 Comm: kworker/0:2 Not tainted syzkaller #0 PREEMPT(voluntary) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 Workqueue: usb_hub_wq hub_event RIP: 0010:__alloc_workqueue+0x114c/0x1810 kernel/workqueue.c:5701 Code: e9 de fc ff ff 48 c7 44 24 08 e8 55 e8 88 e9 8f f6 ff ff 41 be 08 00 00 00 41 bd 00 04 00 00 e9 53 f1 ff ff e8 a5 9a 34 00 90 <0f> 0b 90 31 ed e9 af fc ff ff e8 95 9a 34 00 90 0f 0b 90 31 ed e9 RSP: 0018:ffffc900014aedf8 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 0000000000000002 RCX: ffffffff814b4179 RDX: ffff88810caa9d40 RSI: ffffffff814b527b RDI: 0000000000000005 RBP: ffffc900014aef60 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000002 R11: ffff88810caaa7e8 R12: 0000000000000003 R13: 0000000000000000 R14: ffffffff87e3cc20 R15: ffffc900014aeea0 FS: 0000000000000000(0000) GS:ffff888268bf5000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f8d89852a60 CR3: 0000000117746000 CR4: 00000000003506f0 Call Trace: alloc_workqueue_noprof+0xd2/0x200 kernel/workqueue.c:5820 rtw_usb_init_rx drivers/net/wireless/realtek/rtw88/usb.c:968 [inline] rtw_usb_probe+0x13bf/0x2d10 drivers/net/wireless/realtek/rtw88/usb.c:1295 usb_probe_interface+0x303/0xa80 drivers/usb/core/driver.c:396 call_driver_probe drivers/base/dd.c:581 [inline] really_probe+0x241/0xb20 drivers/base/dd.c:659 __driver_probe_device+0x1de/0x470 drivers/base/dd.c:801 driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:831 __device_attach_driver+0x1df/0x350 drivers/base/dd.c:959 bus_for_each_drv+0x159/0x1e0 drivers/base/bus.c:500 __device_attach+0x1e4/0x4e0 drivers/base/dd.c:1031 device_initial_probe+0xaa/0xc0 drivers/base/dd.c:1086 bus_probe_device+0x64/0x150 drivers/base/bus.c:574 device_add+0x116e/0x1980 drivers/base/core.c:3689 usb_set_configuration+0x1187/0x1e50 drivers/usb/core/message.c:2210 usb_generic_driver_probe+0xb1/0x110 drivers/usb/core/generic.c:250 usb_probe_device+0xef/0x400 drivers/usb/core/driver.c:291 call_driver_probe drivers/base/dd.c:581 [inline] really_probe+0x241/0xb20 drivers/base/dd.c:659 __driver_probe_device+0x1de/0x470 drivers/base/dd.c:801 driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:831 __device_attach_driver+0x1df/0x350 drivers/base/dd.c:959 bus_for_each_drv+0x159/0x1e0 drivers/base/bus.c:500 __device_attach+0x1e4/0x4e0 drivers/base/dd.c:1031 device_initial_probe+0xaa/0xc0 drivers/base/dd.c:1086 bus_probe_device+0x64/0x150 drivers/base/bus.c:574 device_add+0x116e/0x1980 drivers/base/core.c:3689 usb_new_device+0xd07/0x1a90 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+0x31bf/0x5420 drivers/usb/core/hub.c:5953 process_one_work+0x9ba/0x1b20 kernel/workqueue.c:3257 process_scheduled_works kernel/workqueue.c:3340 [inline] worker_thread+0x6c8/0xf10 kernel/workqueue.c:3421 kthread+0x3c5/0x780 kernel/kthread.c:463 ret_from_fork+0x74f/0xa30 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246 --- 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