From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f205.google.com (mail-il1-f205.google.com [209.85.166.205]) (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 14B4A36336B for ; Thu, 30 Oct 2025 15:20:36 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.205 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761837638; cv=none; b=acL56wbs8XOE5XPiPzhOSD1JKXwkRoqrA3Vv0s8Gv6QZvm2DwgwgAKsox4oTJWhhAsqXz2ryWBqFEHHlcLjxgpVFXefzBrvT0+u9M21X+9csbfWsG77OQCyJ7KRMKUFMW9nn4P9hubyMnVmN1vORcGYs+b/ZcTLn8qWwE584R1Q= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761837638; c=relaxed/simple; bh=XvVtumf+fqy2FWoM1pl0Qysoj0glLkvB2WXvkSaCcdA=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=ZZyg2+Izpef+5JMgSThas0A/OO8hTrLj5hxzEfgQMtTfhOz6x7fzRawWIZXhjW4iZXEBOAoL1TLHSTfUWp+DpuA+82ftuvNiU5yTtTHMFxJz8CeTR6LQOafsqVAooODLWg3Czu4F8U3il3JL6cJjhBgeJ+Y/GrxfuLxcVfv14Nc= 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=209.85.166.205 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-il1-f205.google.com with SMTP id e9e14a558f8ab-430c684035eso27167125ab.1 for ; Thu, 30 Oct 2025 08:20:36 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1761837636; x=1762442436; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=HQOoO0KSAHoPO47OmpMMZnYp4L7LjjvgRRFTquouxA8=; b=I7HILhYTmbl0Lc0L9P7gZrM0ac1j3+X6apM2TwUzzBB3XKMDBolM4xTnwxtYVYIguA xRkAk3TbzNfcS8l8wokrQOgv0qkwjeI2N2K/2rktI1ovufcKVi03ZHl6bo8ocZzWceW5 N1g6BtH4QzPFFV+9alZDgeHzu4LlrXHfEomtKlXSqZ55q4lZZFH3+mhTFGWXtr/7ZIaY D/6QHB4i4NSh7KPHehfVVB62i3eo4d8XDefraoUwlYHGNaNN5qTVAwMmLq2vnAq2Ski0 2fHVA/7i7ChiHnha+uuWelIhTgiSCwRPktAZMoxWgd4NYWjEhdNFQbNUwDrhjxc318dg 7kxw== X-Forwarded-Encrypted: i=1; AJvYcCWObpNYkxwERV9I1wwtR6LC8+h1xKiWRHiai2eId/WiLxAoNlx+FGSEbnuhdpl07c1wijcfTXfUDpw=@vger.kernel.org X-Gm-Message-State: AOJu0Yy00SDj5E5osEPpL4ww3R7svQx05PRm3rFNI5CXF6VZjr4HerG8 663NAJvhwE64bH2leLt5dlnnKaLrGF9BjyqwFDz7AjMxUtOooqo25LxrvHYWsOhibuCqm8obIGB DbTFDLg+KTi2rqXcCb2PYk9IfOZnP/MlF/8viHXk9S3orwTfsycPwVsRn2v4= X-Google-Smtp-Source: AGHT+IEpCDOtAdHK5L4c0YSB8igRXeKbdV2j1P50w1oqVnCB2UlfHHUwk/fTOjlDx2n5WySYqZi6iIWMs/Qt8lOW184TA7flERTr Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a92:c262:0:b0:430:afae:fe24 with SMTP id e9e14a558f8ab-4330bdaa062mr3299235ab.8.1761837635814; Thu, 30 Oct 2025 08:20:35 -0700 (PDT) Date: Thu, 30 Oct 2025 08:20:35 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <69038243.a70a0220.5b2ed.0048.GAE@google.com> Subject: [syzbot] [usb?] BUG: corrupted list in usb_hcd_link_urb_to_ep (5) From: syzbot To: gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 6fab32bb6508 MAINTAINERS: add Mark Brown as a linux-next m.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=10d0ed42580000 kernel config: https://syzkaller.appspot.com/x/.config?x=d1ce99afe6f71855 dashboard link: https://syzkaller.appspot.com/bug?extid=e69c25cf38a53d0cf64c compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/d900f083ada3/non_bootable_disk-6fab32bb.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/38b1c3a2c170/vmlinux-6fab32bb.xz kernel image: https://storage.googleapis.com/syzbot-assets/6a6377b85494/bzImage-6fab32bb.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+e69c25cf38a53d0cf64c@syzkaller.appspotmail.com input: CM109 USB driver as /devices/platform/dummy_hcd.6/usb11/11-1/11-1:0.8/input/input39 list_add double add: new=ffff888047968c18, prev=ffff888047968c18, next=ffff88803609c078. ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:35! Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI CPU: 3 UID: 0 PID: 34 Comm: kworker/3:0 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 Workqueue: usb_hub_wq hub_event RIP: 0010:__list_add_valid_or_report+0x143/0x190 lib/list_debug.c:35 Code: 89 f1 48 c7 c7 c0 6e f0 8b 48 89 ee e8 a6 0d ef fc 90 0f 0b 48 89 f2 48 89 e9 4c 89 e6 48 c7 c7 40 6f f0 8b e8 8e 0d ef fc 90 <0f> 0b 48 89 f7 48 89 34 24 e8 1f 46 79 fd 48 8b 34 24 e9 07 ff ff RSP: 0018:ffffc900006ded50 EFLAGS: 00010086 RAX: 0000000000000058 RBX: ffff888047968c00 RCX: ffffffff819b7079 RDX: 0000000000000000 RSI: ffffffff819beba6 RDI: 0000000000000005 RBP: ffff88803609c078 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000080000002 R11: 0000000000002b91 R12: ffff888047968c18 R13: ffff88803609c080 R14: 0000000000000000 R15: ffff888047968c18 FS: 0000000000000000(0000) GS:ffff8880d6d0a000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c3c92d9 CR3: 00000000320a4000 CR4: 0000000000352ef0 Call Trace: __list_add_valid include/linux/list.h:96 [inline] __list_add include/linux/list.h:158 [inline] list_add_tail include/linux/list.h:191 [inline] usb_hcd_link_urb_to_ep+0x220/0x3a0 drivers/usb/core/hcd.c:1158 dummy_urb_enqueue+0x2a7/0x920 drivers/usb/gadget/udc/dummy_hcd.c:1288 usb_hcd_submit_urb+0x25b/0x1c60 drivers/usb/core/hcd.c:1546 usb_submit_urb+0x89f/0x1990 drivers/usb/core/urb.c:587 cm109_input_open+0x27a/0x490 drivers/input/misc/cm109.c:566 input_open_device+0x24c/0x3d0 drivers/input/input.c:601 kbd_connect+0x103/0x160 drivers/tty/vt/keyboard.c:1584 input_attach_handler.isra.0+0x176/0x250 drivers/input/input.c:994 input_register_device+0xab9/0x1180 drivers/input/input.c:2378 cm109_usb_probe+0x122f/0x17c0 drivers/input/misc/cm109.c:797 usb_probe_interface+0x303/0xa40 drivers/usb/core/driver.c:396 call_driver_probe drivers/base/dd.c:581 [inline] really_probe+0x241/0xa90 drivers/base/dd.c:659 __driver_probe_device+0x1de/0x440 drivers/base/dd.c:801 driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:831 __device_attach_driver+0x1df/0x310 drivers/base/dd.c:959 bus_for_each_drv+0x159/0x1e0 drivers/base/bus.c:462 __device_attach+0x1e4/0x4b0 drivers/base/dd.c:1031 bus_probe_device+0x17f/0x1c0 drivers/base/bus.c:537 device_add+0x1148/0x1aa0 drivers/base/core.c:3689 usb_set_configuration+0x1187/0x1e20 drivers/usb/core/message.c:2210 usb_generic_driver_probe+0xb1/0x110 drivers/usb/core/generic.c:250 usb_probe_device+0xef/0x3e0 drivers/usb/core/driver.c:291 call_driver_probe drivers/base/dd.c:581 [inline] really_probe+0x241/0xa90 drivers/base/dd.c:659 __driver_probe_device+0x1de/0x440 drivers/base/dd.c:801 driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:831 __device_attach_driver+0x1df/0x310 drivers/base/dd.c:959 bus_for_each_drv+0x159/0x1e0 drivers/base/bus.c:462 __device_attach+0x1e4/0x4b0 drivers/base/dd.c:1031 bus_probe_device+0x17f/0x1c0 drivers/base/bus.c:537 device_add+0x1148/0x1aa0 drivers/base/core.c:3689 usb_new_device+0xd07/0x1a60 drivers/usb/core/hub.c:2694 hub_port_connect drivers/usb/core/hub.c:5566 [inline] hub_port_connect_change drivers/usb/core/hub.c:5706 [inline] port_event drivers/usb/core/hub.c:5870 [inline] hub_event+0x2f34/0x4fe0 drivers/usb/core/hub.c:5952 process_one_work+0x9cf/0x1b70 kernel/workqueue.c:3263 process_scheduled_works kernel/workqueue.c:3346 [inline] worker_thread+0x6c8/0xf10 kernel/workqueue.c:3427 kthread+0x3c5/0x780 kernel/kthread.c:463 ret_from_fork+0x675/0x7d0 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__list_add_valid_or_report+0x143/0x190 lib/list_debug.c:35 Code: 89 f1 48 c7 c7 c0 6e f0 8b 48 89 ee e8 a6 0d ef fc 90 0f 0b 48 89 f2 48 89 e9 4c 89 e6 48 c7 c7 40 6f f0 8b e8 8e 0d ef fc 90 <0f> 0b 48 89 f7 48 89 34 24 e8 1f 46 79 fd 48 8b 34 24 e9 07 ff ff RSP: 0018:ffffc900006ded50 EFLAGS: 00010086 RAX: 0000000000000058 RBX: ffff888047968c00 RCX: ffffffff819b7079 RDX: 0000000000000000 RSI: ffffffff819beba6 RDI: 0000000000000005 RBP: ffff88803609c078 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000080000002 R11: 0000000000002b91 R12: ffff888047968c18 R13: ffff88803609c080 R14: 0000000000000000 R15: ffff888047968c18 FS: 0000000000000000(0000) GS:ffff8880d6d0a000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c3c92d9 CR3: 00000000320a4000 CR4: 0000000000352ef0 --- 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