From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oi2-f11.google.com (mail-oi2-f11.google.com [74.125.231.203]) (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 C34EA31B130 for ; Tue, 25 Aug 2026 05:13:29 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=74.125.231.203 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787634811; cv=none; b=Suq+j30CkReachm5Aa88/zSva+LmnmJ7boG7aEVxdY4BB2Tv35hSJSamrOB+nRROIBMaf9vYipIHzdADfW3DEnvkljc/m0S4q8z+3zmK2CQSHbt9D9ORhO6Hqn2ja4/TWSXx5KXbydZBggdstZaJk3Wd7EhmAnacPD0gWOkdlWI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787634811; c=relaxed/simple; bh=kd4raqozJlF8oJwm/9iR6Iz+KK4sFDkFgm3aPOtZ4Hs=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=M3hxArolY1kUYeSW0fUkriuO2qC+CsOmQX3CNulXM4K1TMQOhQS8uxAAb2gCz/H9nKFVP27D5yNhA0BDmsS+EwxFVP5AmOUpBcaLCWsuhyXne3visWqtmZZE0dO9o/Gfe4VwysMn2nh7uDyjs4zJYN6srRy7zc5vhMO8LYmcpj8= 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=74.125.231.203 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-f11.google.com with SMTP id 5614622812f47-4b25c60f07cso1640051b6e.1 for ; Mon, 24 Aug 2026 22:13:29 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1787634808; x=1788239608; 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=Dxj/XHg//d6B5CRWxpPSb7UrRCmb/zUQgh32C4WER+M=; b=Cbp9MRpZ/mKMpc4HnDgF4JH0rNc0ZOGZyOTppO1t9n8veCfNOux2sqvNS4qIAbFmRb brNpxmhQpEIR9plaQIxb163A6Ui0uQKesThjDf9nQM/040/ekIg6yMf9QwZnXVhIEkMM 3nRpHCCsENLixwcMcFGmYGLnjcSswYcwfhjwpusQ3/SBmsdfqTFVaAcqUUdX9jj/x9ge j67xmiDN/gsxKEt6Sc79H3CpItBG7xAGCWW0hpdFewOwszSmIGM7X1GKIVYM+N96/Jm6 MxzcWlhwcWPjfKzfDv8E4gJGU6S33FHJpvlJ/iz9OYZKFXSrGabZsUGurCkIhiFLoShf E0cg== X-Forwarded-Encrypted: i=1; AHgh+RqzkhQPo9H824/hbU5bGMbpFgQVIYCuhGAJx8xII/4lpHb3Jnd3o1nW6EmyUlJagPsJkD7BzqOoBUfZRcY=@vger.kernel.org X-Gm-Message-State: AFuF++k242joMKlyrUJugLfVmv6SHd+RDVQTyhhEdqfxxDVZCsAIF8sp BtWxTowAaKv46YWlN/BsK0ey/bcqtfPuIAZW1jDdclH0f5dT4s9TF7Vhcxj7GhAqXuLpSGR4n// mL1mGBtgc5qxydqY7r1RXjtYvmS3x/bmvDgqcHH2jgFV0eWpWgaiSojCftBo= 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:f92:b0:4b1:540a:df99 with SMTP id 5614622812f47-4b35078eac6mr3792930b6e.21.1787634808491; Mon, 24 Aug 2026 22:13:28 -0700 (PDT) Date: Mon, 24 Aug 2026 22:13:28 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6a8d2478.a5a502ce.31d34.001f.GAE@google.com> Subject: [syzbot] [usb-storage?] WARNING in usb_stor_scan_dwork/usb_submit_urb From: syzbot To: gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, stern@rowland.harvard.edu, syzkaller-bugs@googlegroups.com, usb-storage@lists.one-eyed-alien.net 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=168c0179580000 kernel config: https://syzkaller.appspot.com/x/.config?x=8bdeea7ee6735f91 dashboard link: https://syzkaller.appspot.com/bug?extid=50c258b43e6a020d124f 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/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+50c258b43e6a020d124f@syzkaller.appspotmail.com ------------[ cut here ]------------ URB ffff888103ab5d00 submitted while active WARNING: drivers/usb/core/urb.c:379 at usb_submit_urb+0x1689/0x19b0 drivers/usb/core/urb.c:379, CPU#0: kworker/0:4/5231 Modules linked in: CPU: 0 UID: 0 PID: 5231 Comm: kworker/0:4 Not tainted syzkaller #0 PREEMPT(lazy) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 Workqueue: events_freezable usb_stor_scan_dwork RIP: 0010:usb_submit_urb+0x168c/0x19b0 drivers/usb/core/urb.c:379 Code: 00 48 8b 04 24 48 8b 90 b0 00 00 00 e9 70 ff ff ff bb ed ff ff ff e9 ac f1 ff ff e8 ce 9a ba fc 48 8d 3d 67 f4 00 06 48 89 de <67> 48 0f b9 3a bb f0 ff ff ff e9 8e f1 ff ff c7 44 24 30 00 00 00 RSP: 0018:ffffc90002dafa48 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffff888103ab5d00 RCX: dffffc0000000000 RDX: ffff888119261e00 RSI: ffff888103ab5d00 RDI: ffffffff8afa6e20 RBP: 1ffff920005b5f5c R08: 0000000000000002 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff88813cc60fb0 R13: ffff88813cc60f28 R14: ffffc90002dafb00 R15: ffff888103ab5d00 FS: 0000000000000000(0000) GS:ffff888268633000(0000) knlGS:0000000000000000 Call Trace: usb_stor_scan_dwork+0x1e6/0x2c0 drivers/usb/storage/usb.c:988 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 ---------------- Code disassembly (best guess): 0: 00 48 8b add %cl,-0x75(%rax) 3: 04 24 add $0x24,%al 5: 48 8b 90 b0 00 00 00 mov 0xb0(%rax),%rdx c: e9 70 ff ff ff jmp 0xffffff81 11: bb ed ff ff ff mov $0xffffffed,%ebx 16: e9 ac f1 ff ff jmp 0xfffff1c7 1b: e8 ce 9a ba fc call 0xfcba9aee 20: 48 8d 3d 67 f4 00 06 lea 0x600f467(%rip),%rdi # 0x600f48e 27: 48 89 de mov %rbx,%rsi * 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction 2f: bb f0 ff ff ff mov $0xfffffff0,%ebx 34: e9 8e f1 ff ff jmp 0xfffff1c7 39: c7 .byte 0xc7 3a: 44 24 30 rex.R and $0x30,%al 3d: 00 00 add %al,(%rax) --- 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