usb 2-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
usb 2-1: Product: syz
usb 2-1: Manufacturer: syz
usb 2-1: SerialNumber: syz
usb 2-1: config 0 descriptor??
hso 2-1:0.0: Can't find BULK IN endpoint
------------[ cut here ]------------
WARNING: CPU: 1 PID: 11979 at net/core/dev.c:10900 unregister_netdevice_many+0x205/0x1760 net/core/dev.c:10900
Modules linked in:
CPU: 1 PID: 11979 Comm: kworker/1:13 Not tainted 5.12.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: usb_hub_wq hub_event
RIP: 0010:unregister_netdevice_many+0x205/0x1760 net/core/dev.c:10900
Code: 05 00 00 31 ff 44 89 fe e8 18 40 76 fa 45 84 ff 0f 85 49 ff ff ff e8 5a 39 76 fa 0f 1f 44 00 00 e8 50 39 76 fa e8 4b 39 76 fa <0f> 0b 4c 89 ef e8 c1 b9 ce fc 31 ff 41 89 c5 89 c6 e8 e5 3f 76 fa
RSP: 0018:ffffc900089def40 EFLAGS: 00010216
RAX: 0000000000025c51 RBX: ffff88806fe2a000 RCX: ffffc90016579000
RDX: 0000000000040000 RSI: ffffffff86fdb805 RDI: 0000000000000003
RBP: dffffc0000000000 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff86fdb7e8 R11: 0000000000000000 R12: ffffc900089df010
R13: ffff88806fe2a060 R14: ffffc900089defb0 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3a18c1d000 CR3: 00000000184fc000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 unregister_netdevice_queue+0x2dd/0x3c0 net/core/dev.c:10868
 unregister_netdevice include/linux/netdevice.h:2884 [inline]
 unregister_netdev+0x18/0x20 net/core/dev.c:10993
 hso_free_net_device+0x110/0x3b0 drivers/net/usb/hso.c:2370
 hso_create_net_device+0x79c/0xa80 drivers/net/usb/hso.c:2557
 hso_probe+0x144b/0x1f70 drivers/net/usb/hso.c:2909
 usb_probe_interface+0x315/0x7f0 drivers/usb/core/driver.c:396
 really_probe+0x291/0xe60 drivers/base/dd.c:554
 driver_probe_device+0x26b/0x3d0 drivers/base/dd.c:740
 __device_attach_driver+0x1d1/0x290 drivers/base/dd.c:846
 bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:431
 __device_attach+0x228/0x4a0 drivers/base/dd.c:914
 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:491
 device_add+0xbdb/0x1db0 drivers/base/core.c:3242
 usb_set_configuration+0x113f/0x1910 drivers/usb/core/message.c:2164
 usb_generic_driver_probe+0xba/0x100 drivers/usb/core/generic.c:238
 usb_probe_device+0xd9/0x2c0 drivers/usb/core/driver.c:293
 really_probe+0x291/0xe60 drivers/base/dd.c:554
 driver_probe_device+0x26b/0x3d0 drivers/base/dd.c:740
 __device_attach_driver+0x1d1/0x290 drivers/base/dd.c:846
 bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:431
 __device_attach+0x228/0x4a0 drivers/base/dd.c:914
 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:491
 device_add+0xbdb/0x1db0 drivers/base/core.c:3242
 usb_new_device.cold+0x721/0x1058 drivers/usb/core/hub.c:2555
 hub_port_connect drivers/usb/core/hub.c:5223 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5363 [inline]
 port_event drivers/usb/core/hub.c:5509 [inline]
 hub_event+0x2357/0x4320 drivers/usb/core/hub.c:5591
 process_one_work+0x98d/0x1600 kernel/workqueue.c:2275
 worker_thread+0x64c/0x1120 kernel/workqueue.c:2421
 kthread+0x3b1/0x4a0 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294