input: HID 045e:07da as /devices/platform/dummy_hcd.4/usb5/5-1/5-1:0.0/0003:045E:07DA.000C/input/input12
======================================================
WARNING: possible circular locking dependency detected
6.11.0-rc4-syzkaller-00069-gfc88bb116179 #0 Not tainted
------------------------------------------------------
kworker/0:2/42 is trying to acquire lock:
ffff88811abb9e20 (&hdev->ll_open_lock){+.+.}-{3:3}, at: hid_hw_open+0x25/0x170 drivers/hid/hid-core.c:2361

but task is already holding lock:
ffff8881154b72c0 (&dev->mutex#2){+.+.}-{3:3}, at: input_open_device+0x4f/0x320 drivers/input/input.c:597

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #1 (&dev->mutex#2){+.+.}-{3:3}:
       __mutex_lock_common kernel/locking/mutex.c:608 [inline]
       __mutex_lock+0x175/0x9c0 kernel/locking/mutex.c:752
       input_disconnect_device drivers/input/input.c:724 [inline]
       __input_unregister_device+0x24/0x450 drivers/input/input.c:2273
       input_unregister_device+0xb9/0x100 drivers/input/input.c:2514
       steam_sensors_unregister.part.0+0x10c/0x2c0 drivers/hid/hid-steam.c:935
       steam_sensors_unregister drivers/hid/hid-steam.c:924 [inline]
       steam_client_ll_open+0xbc/0x100 drivers/hid/hid-steam.c:1120
       hid_hw_open+0xe2/0x170 drivers/hid/hid-core.c:2366
       hidraw_open+0x274/0x7e0 drivers/hid/hidraw.c:296
       chrdev_open+0x26d/0x6f0 fs/char_dev.c:414
       do_dentry_open+0x957/0x1490 fs/open.c:959
       vfs_open+0x82/0x3f0 fs/open.c:1089
       do_open fs/namei.c:3727 [inline]
       path_openat+0x2141/0x2d20 fs/namei.c:3886
       do_filp_open+0x1dc/0x430 fs/namei.c:3913
       do_sys_openat2+0x17a/0x1e0 fs/open.c:1416
       do_sys_open fs/open.c:1431 [inline]
       __do_sys_openat fs/open.c:1447 [inline]
       __se_sys_openat fs/open.c:1442 [inline]
       __x64_sys_openat+0x175/0x210 fs/open.c:1442
       do_syscall_x64 arch/x86/entry/common.c:52 [inline]
       do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> #0 (&hdev->ll_open_lock){+.+.}-{3:3}:
       check_prev_add kernel/locking/lockdep.c:3133 [inline]
       check_prevs_add kernel/locking/lockdep.c:3252 [inline]
       validate_chain kernel/locking/lockdep.c:3868 [inline]
       __lock_acquire+0x24ed/0x3cb0 kernel/locking/lockdep.c:5142
       lock_acquire kernel/locking/lockdep.c:5759 [inline]
       lock_acquire+0x1b1/0x560 kernel/locking/lockdep.c:5724
       __mutex_lock_common kernel/locking/mutex.c:608 [inline]
       __mutex_lock+0x175/0x9c0 kernel/locking/mutex.c:752
       hid_hw_open+0x25/0x170 drivers/hid/hid-core.c:2361
       input_open_device+0x1c9/0x320 drivers/input/input.c:617
       input_leds_connect+0x262/0x8e0 drivers/input/input-leds.c:119
       input_attach_handler.isra.0+0x181/0x260 drivers/input/input.c:1027
       input_register_device+0xa8e/0x1140 drivers/input/input.c:2473
       hidinput_connect+0x1d9c/0x2ba0 drivers/hid/hid-input.c:2370
       hid_connect+0x13a8/0x18a0 drivers/hid/hid-core.c:2209
       hid_hw_start drivers/hid/hid-core.c:2324 [inline]
       hid_hw_start+0xaa/0x140 drivers/hid/hid-core.c:2315
       ms_probe+0x195/0x500 drivers/hid/hid-microsoft.c:391
       __hid_device_probe drivers/hid/hid-core.c:2674 [inline]
       hid_device_probe+0x2eb/0x490 drivers/hid/hid-core.c:2711
       call_driver_probe drivers/base/dd.c:578 [inline]
       really_probe+0x23e/0xa90 drivers/base/dd.c:657
       __driver_probe_device+0x1de/0x440 drivers/base/dd.c:799
       driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:829
       __device_attach_driver+0x1df/0x310 drivers/base/dd.c:957
       bus_for_each_drv+0x157/0x1e0 drivers/base/bus.c:457
       __device_attach+0x1e8/0x4b0 drivers/base/dd.c:1029
       bus_probe_device+0x17f/0x1c0 drivers/base/bus.c:532
       device_add+0x114b/0x1a70 drivers/base/core.c:3682
       hid_add_device+0x37f/0xa70 drivers/hid/hid-core.c:2857
       usbhid_probe+0xd3b/0x1410 drivers/hid/usbhid/hid-core.c:1431
       usb_probe_interface+0x309/0x9d0 drivers/usb/core/driver.c:399
       call_driver_probe drivers/base/dd.c:578 [inline]
       really_probe+0x23e/0xa90 drivers/base/dd.c:657
       __driver_probe_device+0x1de/0x440 drivers/base/dd.c:799
       driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:829
       __device_attach_driver+0x1df/0x310 drivers/base/dd.c:957
       bus_for_each_drv+0x157/0x1e0 drivers/base/bus.c:457
       __device_attach+0x1e8/0x4b0 drivers/base/dd.c:1029
       bus_probe_device+0x17f/0x1c0 drivers/base/bus.c:532
       device_add+0x114b/0x1a70 drivers/base/core.c:3682
       usb_set_configuration+0x10cb/0x1c50 drivers/usb/core/message.c:2210
       usb_generic_driver_probe+0xb1/0x110 drivers/usb/core/generic.c:254
       usb_probe_device+0xec/0x3e0 drivers/usb/core/driver.c:294
       call_driver_probe drivers/base/dd.c:578 [inline]
       really_probe+0x23e/0xa90 drivers/base/dd.c:657
       __driver_probe_device+0x1de/0x440 drivers/base/dd.c:799
       driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:829
       __device_attach_driver+0x1df/0x310 drivers/base/dd.c:957
       bus_for_each_drv+0x157/0x1e0 drivers/base/bus.c:457
       __device_attach+0x1e8/0x4b0 drivers/base/dd.c:1029
       bus_probe_device+0x17f/0x1c0 drivers/base/bus.c:532
       device_add+0x114b/0x1a70 drivers/base/core.c:3682
       usb_new_device+0xd90/0x1a10 drivers/usb/core/hub.c:2651
       hub_port_connect drivers/usb/core/hub.c:5521 [inline]
       hub_port_connect_change drivers/usb/core/hub.c:5661 [inline]
       port_event drivers/usb/core/hub.c:5821 [inline]
       hub_event+0x2e58/0x4f40 drivers/usb/core/hub.c:5903
       process_one_work+0x9c5/0x1b40 kernel/workqueue.c:3231
       process_scheduled_works kernel/workqueue.c:3312 [inline]
       worker_thread+0x6c8/0xf20 kernel/workqueue.c:3390
       kthread+0x2c1/0x3a0 kernel/kthread.c:389
       ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
       ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244

other info that might help us debug this:

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(&dev->mutex#2);
                               lock(&hdev->ll_open_lock);
                               lock(&dev->mutex#2);
  lock(&hdev->ll_open_lock);

 *** DEADLOCK ***

8 locks held by kworker/0:2/42:
 #0: ffff888104ef1948 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x1277/0x1b40 kernel/workqueue.c:3206
 #1: ffffc900004d7d80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x921/0x1b40 kernel/workqueue.c:3207
 #2: ffff888109306190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1009 [inline]
 #2: ffff888109306190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1be/0x4f40 drivers/usb/core/hub.c:5849
 #3: ffff88811c809190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1009 [inline]
 #3: ffff88811c809190 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1004
 #4: ffff88811c80e160 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1009 [inline]
 #4: ffff88811c80e160 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1004
 #5: ffff88811abb9a20 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1009 [inline]
 #5: ffff88811abb9a20 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1004
 #6: ffffffff899a00a8 (input_mutex){+.+.}-{3:3}, at: input_register_device+0x997/0x1140 drivers/input/input.c:2466
 #7: ffff8881154b72c0 (&dev->mutex#2){+.+.}-{3:3}, at: input_open_device+0x4f/0x320 drivers/input/input.c:597

stack backtrace:
CPU: 0 UID: 0 PID: 42 Comm: kworker/0:2 Not tainted 6.11.0-rc4-syzkaller-00069-gfc88bb116179 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Workqueue: usb_hub_wq hub_event
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:93 [inline]
 dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:119
 check_noncircular+0x31a/0x400 kernel/locking/lockdep.c:2186
 check_prev_add kernel/locking/lockdep.c:3133 [inline]
 check_prevs_add kernel/locking/lockdep.c:3252 [inline]
 validate_chain kernel/locking/lockdep.c:3868 [inline]
 __lock_acquire+0x24ed/0x3cb0 kernel/locking/lockdep.c:5142
 lock_acquire kernel/locking/lockdep.c:5759 [inline]
 lock_acquire+0x1b1/0x560 kernel/locking/lockdep.c:5724
 __mutex_lock_common kernel/locking/mutex.c:608 [inline]
 __mutex_lock+0x175/0x9c0 kernel/locking/mutex.c:752
 hid_hw_open+0x25/0x170 drivers/hid/hid-core.c:2361
 input_open_device+0x1c9/0x320 drivers/input/input.c:617
 input_leds_connect+0x262/0x8e0 drivers/input/input-leds.c:119
 input_attach_handler.isra.0+0x181/0x260 drivers/input/input.c:1027
 input_register_device+0xa8e/0x1140 drivers/input/input.c:2473
 hidinput_connect+0x1d9c/0x2ba0 drivers/hid/hid-input.c:2370
 hid_connect+0x13a8/0x18a0 drivers/hid/hid-core.c:2209
 hid_hw_start drivers/hid/hid-core.c:2324 [inline]
 hid_hw_start+0xaa/0x140 drivers/hid/hid-core.c:2315
 ms_probe+0x195/0x500 drivers/hid/hid-microsoft.c:391
 __hid_device_probe drivers/hid/hid-core.c:2674 [inline]
 hid_device_probe+0x2eb/0x490 drivers/hid/hid-core.c:2711
 call_driver_probe drivers/base/dd.c:578 [inline]
 really_probe+0x23e/0xa90 drivers/base/dd.c:657
 __driver_probe_device+0x1de/0x440 drivers/base/dd.c:799
 driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:829
 __device_attach_driver+0x1df/0x310 drivers/base/dd.c:957
 bus_for_each_drv+0x157/0x1e0 drivers/base/bus.c:457
 __device_attach+0x1e8/0x4b0 drivers/base/dd.c:1029
 bus_probe_device+0x17f/0x1c0 drivers/base/bus.c:532
 device_add+0x114b/0x1a70 drivers/base/core.c:3682
 hid_add_device+0x37f/0xa70 drivers/hid/hid-core.c:2857
 usbhid_probe+0xd3b/0x1410 drivers/hid/usbhid/hid-core.c:1431
 usb_probe_interface+0x309/0x9d0 drivers/usb/core/driver.c:399
 call_driver_probe drivers/base/dd.c:578 [inline]
 really_probe+0x23e/0xa90 drivers/base/dd.c:657
 __driver_probe_device+0x1de/0x440 drivers/base/dd.c:799
 driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:829
 __device_attach_driver+0x1df/0x310 drivers/base/dd.c:957
 bus_for_each_drv+0x157/0x1e0 drivers/base/bus.c:457
 __device_attach+0x1e8/0x4b0 drivers/base/dd.c:1029
 bus_probe_device+0x17f/0x1c0 drivers/base/bus.c:532
 device_add+0x114b/0x1a70 drivers/base/core.c:3682
 usb_set_configuration+0x10cb/0x1c50 drivers/usb/core/message.c:2210
 usb_generic_driver_probe+0xb1/0x110 drivers/usb/core/generic.c:254
 usb_probe_device+0xec/0x3e0 drivers/usb/core/driver.c:294
 call_driver_probe drivers/base/dd.c:578 [inline]
 really_probe+0x23e/0xa90 drivers/base/dd.c:657
 __driver_probe_device+0x1de/0x440 drivers/base/dd.c:799
 driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:829
 __device_attach_driver+0x1df/0x310 drivers/base/dd.c:957
 bus_for_each_drv+0x157/0x1e0 drivers/base/bus.c:457
 __device_attach+0x1e8/0x4b0 drivers/base/dd.c:1029
 bus_probe_device+0x17f/0x1c0 drivers/base/bus.c:532
 device_add+0x114b/0x1a70 drivers/base/core.c:3682
 usb_new_device+0xd90/0x1a10 drivers/usb/core/hub.c:2651
 hub_port_connect drivers/usb/core/hub.c:5521 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5661 [inline]
 port_event drivers/usb/core/hub.c:5821 [inline]
 hub_event+0x2e58/0x4f40 drivers/usb/core/hub.c:5903
 process_one_work+0x9c5/0x1b40 kernel/workqueue.c:3231
 process_scheduled_works kernel/workqueue.c:3312 [inline]
 worker_thread+0x6c8/0xf20 kernel/workqueue.c:3390
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
microsoft 0003:045E:07DA.000C: input,hidraw0: USB HID v0.00 Device [HID 045e:07da] on usb-dummy_hcd.4-1/input0
usb 5-1: USB disconnect, device number 17