linux-stable.git/drivers/usb, branch v5.19.8 Linux kernel stable tree USB: gadget: Fix obscure lockdep violation for udc_mutex 2022-09-08T09:24:06+00:00 Alan Stern stern@rowland.harvard.edu 2022-08-26T19:31:17+00:00 1a065e4673cbdd9f222a05f85e17d78ea50c8d9c commit 1016fc0c096c92dd0e6e0541daac7a7868169903 upstream. A recent commit expanding the scope of the udc_lock mutex in the gadget core managed to cause an obscure and slightly bizarre lockdep violation. In abbreviated form: ====================================================== WARNING: possible circular locking dependency detected 5.19.0-rc7+ #12510 Not tainted ------------------------------------------------------ udevadm/312 is trying to acquire lock: ffff80000aae1058 (udc_lock){+.+.}-{3:3}, at: usb_udc_uevent+0x54/0xe0 but task is already holding lock: ffff000002277548 (kn->active#4){++++}-{0:0}, at: kernfs_seq_start+0x34/0xe0 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #3 (kn->active#4){++++}-{0:0}:        lock_acquire+0x68/0x84        __kernfs_remove+0x268/0x380        kernfs_remove_by_name_ns+0x58/0xac        sysfs_remove_file_ns+0x18/0x24        device_del+0x15c/0x440 -> #2 (device_links_lock){+.+.}-{3:3}:        lock_acquire+0x68/0x84        __mutex_lock+0x9c/0x430        mutex_lock_nested+0x38/0x64        device_link_remove+0x3c/0xa0        _regulator_put.part.0+0x168/0x190        regulator_put+0x3c/0x54        devm_regulator_release+0x14/0x20 -> #1 (regulator_list_mutex){+.+.}-{3:3}:        lock_acquire+0x68/0x84        __mutex_lock+0x9c/0x430        mutex_lock_nested+0x38/0x64        regulator_lock_dependent+0x54/0x284        regulator_enable+0x34/0x80        phy_power_on+0x24/0x130        __dwc2_lowlevel_hw_enable+0x100/0x130        dwc2_lowlevel_hw_enable+0x18/0x40        dwc2_hsotg_udc_start+0x6c/0x2f0        gadget_bind_driver+0x124/0x1f4 -> #0 (udc_lock){+.+.}-{3:3}:        __lock_acquire+0x1298/0x20cc        lock_acquire.part.0+0xe0/0x230        lock_acquire+0x68/0x84        __mutex_lock+0x9c/0x430        mutex_lock_nested+0x38/0x64        usb_udc_uevent+0x54/0xe0 Evidently this was caused by the scope of udc_mutex being too large. The mutex is only meant to protect udc->driver along with a few other things. As far as I can tell, there's no reason for the mutex to be held while the gadget core calls a gadget driver's ->bind or ->unbind routine, or while a UDC is being started or stopped. (This accounts for link #1 in the chain above, where the mutex is held while the dwc2_hsotg_udc is started as part of driver probing.) Gadget drivers' ->disconnect callbacks are problematic. Even though usb_gadget_disconnect() will now acquire the udc_mutex, there's a window in usb_gadget_bind_driver() between the times when the mutex is released and the ->bind callback is invoked. If a disconnect occurred during that window, we could call the driver's ->disconnect routine before its ->bind routine. To prevent this from happening, it will be necessary to prevent a UDC from connecting while it has no gadget driver. This should be done already but it doesn't seem to be; currently usb_gadget_connect() has no check for this. Such a check will have to be added later. Some degree of mutual exclusion is required in soft_connect_store(), which can dereference udc->driver at arbitrary times since it is a sysfs callback. The solution here is to acquire the gadget's device lock rather than the udc_mutex. Since the driver core guarantees that the device lock is always held during driver binding and unbinding, this will make the accesses in soft_connect_store() mutually exclusive with any changes to udc->driver. Lastly, it turns out there is one place which should hold the udc_mutex but currently does not: The function_show() routine needs protection while it dereferences udc->driver. The missing lock and unlock calls are added. Link: https://lore.kernel.org/all/b2ba4245-9917-e399-94c8-03a383e7070e@samsung.com/ Fixes: 2191c00855b0 ("USB: gadget: Fix use-after-free Read in usb_udc_uevent()") Cc: Felipe Balbi <balbi@kernel.org> Cc: stable@vger.kernel.org Reported-by: Marek Szyprowski <m.szyprowski@samsung.com> Tested-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Link: https://lore.kernel.org/r/YwkfhdxA/I2nOcK7@rowland.harvard.edu Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit 1016fc0c096c92dd0e6e0541daac7a7868169903 upstream.

A recent commit expanding the scope of the udc_lock mutex in the
gadget core managed to cause an obscure and slightly bizarre lockdep
violation.  In abbreviated form:

======================================================
WARNING: possible circular locking dependency detected
5.19.0-rc7+ #12510 Not tainted
------------------------------------------------------
udevadm/312 is trying to acquire lock:
ffff80000aae1058 (udc_lock){+.+.}-{3:3}, at: usb_udc_uevent+0x54/0xe0

but task is already holding lock:
ffff000002277548 (kn->active#4){++++}-{0:0}, at: kernfs_seq_start+0x34/0xe0

which lock already depends on the new lock.

the existing dependency chain (in reverse order) is:

-> #3 (kn->active#4){++++}-{0:0}:
        lock_acquire+0x68/0x84
        __kernfs_remove+0x268/0x380
        kernfs_remove_by_name_ns+0x58/0xac
        sysfs_remove_file_ns+0x18/0x24
        device_del+0x15c/0x440

-> #2 (device_links_lock){+.+.}-{3:3}:
        lock_acquire+0x68/0x84
        __mutex_lock+0x9c/0x430
        mutex_lock_nested+0x38/0x64
        device_link_remove+0x3c/0xa0
        _regulator_put.part.0+0x168/0x190
        regulator_put+0x3c/0x54
        devm_regulator_release+0x14/0x20

-> #1 (regulator_list_mutex){+.+.}-{3:3}:
        lock_acquire+0x68/0x84
        __mutex_lock+0x9c/0x430
        mutex_lock_nested+0x38/0x64
        regulator_lock_dependent+0x54/0x284
        regulator_enable+0x34/0x80
        phy_power_on+0x24/0x130
        __dwc2_lowlevel_hw_enable+0x100/0x130
        dwc2_lowlevel_hw_enable+0x18/0x40
        dwc2_hsotg_udc_start+0x6c/0x2f0
        gadget_bind_driver+0x124/0x1f4

-> #0 (udc_lock){+.+.}-{3:3}:
        __lock_acquire+0x1298/0x20cc
        lock_acquire.part.0+0xe0/0x230
        lock_acquire+0x68/0x84
        __mutex_lock+0x9c/0x430
        mutex_lock_nested+0x38/0x64
        usb_udc_uevent+0x54/0xe0

Evidently this was caused by the scope of udc_mutex being too large.
The mutex is only meant to protect udc->driver along with a few other
things.  As far as I can tell, there's no reason for the mutex to be
held while the gadget core calls a gadget driver's ->bind or ->unbind
routine, or while a UDC is being started or stopped.  (This accounts
for link #1 in the chain above, where the mutex is held while the
dwc2_hsotg_udc is started as part of driver probing.)

Gadget drivers' ->disconnect callbacks are problematic.  Even though
usb_gadget_disconnect() will now acquire the udc_mutex, there's a
window in usb_gadget_bind_driver() between the times when the mutex is
released and the ->bind callback is invoked.  If a disconnect occurred
during that window, we could call the driver's ->disconnect routine
before its ->bind routine.  To prevent this from happening, it will be
necessary to prevent a UDC from connecting while it has no gadget
driver.  This should be done already but it doesn't seem to be;
currently usb_gadget_connect() has no check for this.  Such a check
will have to be added later.

Some degree of mutual exclusion is required in soft_connect_store(),
which can dereference udc->driver at arbitrary times since it is a
sysfs callback.  The solution here is to acquire the gadget's device
lock rather than the udc_mutex.  Since the driver core guarantees that
the device lock is always held during driver binding and unbinding,
this will make the accesses in soft_connect_store() mutually exclusive
with any changes to udc->driver.

Lastly, it turns out there is one place which should hold the
udc_mutex but currently does not: The function_show() routine needs
protection while it dereferences udc->driver.  The missing lock and
unlock calls are added.

Link: https://lore.kernel.org/all/b2ba4245-9917-e399-94c8-03a383e7070e@samsung.com/
Fixes: 2191c00855b0 ("USB: gadget: Fix use-after-free Read in usb_udc_uevent()")
Cc: Felipe Balbi <balbi@kernel.org>
Cc: stable@vger.kernel.org
Reported-by: Marek Szyprowski <m.szyprowski@samsung.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Link: https://lore.kernel.org/r/YwkfhdxA/I2nOcK7@rowland.harvard.edu
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
usb: gadget: mass_storage: Fix cdrom data transfers on MAC-OS 2022-09-08T09:24:06+00:00 Krishna Kurapati quic_kriskura@quicinc.com 2022-08-27T03:15:10+00:00 bdaac12bb135d70e915982dd7a81da0832760ee4 commit 9d4dc16ec71bd6368548e9743223e449b4377fc7 upstream. During cdrom emulation, the response to read_toc command must contain the cdrom address as the number of sectors (2048 byte sized blocks) represented either as an absolute value (when MSF bit is '0') or in terms of PMin/PSec/PFrame (when MSF bit is set to '1'). Incase of cdrom, the fsg_lun_open call sets the sector size to 2048 bytes. When MAC OS sends a read_toc request with MSF set to '1', the store_cdrom_address assumes that the address being provided is the LUN size represented in 512 byte sized blocks instead of 2048. It tries to modify the address further to convert it to 2048 byte sized blocks and store it in MSF format. This results in data transfer failures as the cdrom address being provided in the read_toc response is incorrect. Fixes: 3f565a363cee ("usb: gadget: storage: adapt logic block size to bound block devices") Cc: stable@vger.kernel.org Acked-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Krishna Kurapati <quic_kriskura@quicinc.com> Link: https://lore.kernel.org/r/1661570110-19127-1-git-send-email-quic_kriskura@quicinc.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit 9d4dc16ec71bd6368548e9743223e449b4377fc7 upstream.

During cdrom emulation, the response to read_toc command must contain
the cdrom address as the number of sectors (2048 byte sized blocks)
represented either as an absolute value (when MSF bit is '0') or in
terms of PMin/PSec/PFrame (when MSF bit is set to '1'). Incase of
cdrom, the fsg_lun_open call sets the sector size to 2048 bytes.

When MAC OS sends a read_toc request with MSF set to '1', the
store_cdrom_address assumes that the address being provided is the
LUN size represented in 512 byte sized blocks instead of 2048. It
tries to modify the address further to convert it to 2048 byte sized
blocks and store it in MSF format. This results in data transfer
failures as the cdrom address being provided in the read_toc response
is incorrect.

Fixes: 3f565a363cee ("usb: gadget: storage: adapt logic block size to bound block devices")
Cc: stable@vger.kernel.org
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Krishna Kurapati <quic_kriskura@quicinc.com>
Link: https://lore.kernel.org/r/1661570110-19127-1-git-send-email-quic_kriskura@quicinc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
usb: gadget: f_uac2: fix superspeed transfer 2022-09-08T09:24:06+00:00 Jing Leng jleng@ambarella.com 2022-07-21T01:48:15+00:00 e78ca7f51ac5a026088670c3c52194d5b89996c1 commit f511aef2ebe5377d4c263842f2e0c0b8e274e8e5 upstream. On page 362 of the USB3.2 specification ( https://usb.org/sites/default/files/usb_32_20210125.zip), The 'SuperSpeed Endpoint Companion Descriptor' shall only be returned by Enhanced SuperSpeed devices that are operating at Gen X speed. Each endpoint described in an interface is followed by a 'SuperSpeed Endpoint Companion Descriptor'. If users use SuperSpeed UDC, host can't recognize the device if endpoint doesn't have 'SuperSpeed Endpoint Companion Descriptor' followed. Currently in the uac2 driver code: 1. ss_epout_desc_comp follows ss_epout_desc; 2. ss_epin_fback_desc_comp follows ss_epin_fback_desc; 3. ss_epin_desc_comp follows ss_epin_desc; 4. Only ss_ep_int_desc endpoint doesn't have 'SuperSpeed Endpoint Companion Descriptor' followed, so we should add it. Fixes: eaf6cbe09920 ("usb: gadget: f_uac2: add volume and mute support") Cc: stable <stable@kernel.org> Signed-off-by: Jing Leng <jleng@ambarella.com> Signed-off-by: Jack Pham <quic_jackp@quicinc.com> Link: https://lore.kernel.org/r/20220721014815.14453-1-quic_jackp@quicinc.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit f511aef2ebe5377d4c263842f2e0c0b8e274e8e5 upstream.

On page 362 of the USB3.2 specification (
https://usb.org/sites/default/files/usb_32_20210125.zip),
The 'SuperSpeed Endpoint Companion Descriptor' shall only be returned
by Enhanced SuperSpeed devices that are operating at Gen X speed.
Each endpoint described in an interface is followed by a 'SuperSpeed
Endpoint Companion Descriptor'.

If users use SuperSpeed UDC, host can't recognize the device if endpoint
doesn't have 'SuperSpeed Endpoint Companion Descriptor' followed.

Currently in the uac2 driver code:
1. ss_epout_desc_comp follows ss_epout_desc;
2. ss_epin_fback_desc_comp follows ss_epin_fback_desc;
3. ss_epin_desc_comp follows ss_epin_desc;
4. Only ss_ep_int_desc endpoint doesn't have 'SuperSpeed Endpoint
Companion Descriptor' followed, so we should add it.

Fixes: eaf6cbe09920 ("usb: gadget: f_uac2: add volume and mute support")
Cc: stable <stable@kernel.org>
Signed-off-by: Jing Leng <jleng@ambarella.com>
Signed-off-by: Jack Pham <quic_jackp@quicinc.com>
Link: https://lore.kernel.org/r/20220721014815.14453-1-quic_jackp@quicinc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
usb: xhci-mtk: fix bandwidth release issue 2022-09-08T09:24:06+00:00 Chunfeng Yun chunfeng.yun@mediatek.com 2022-08-19T08:05:56+00:00 3cf44c63bc1b07b9ec02548e50c094f6b1dfee29 commit 6020f480004a80cdad4ae5ee180a231c4f65595b upstream. This happens when @udev->reset_resume is set to true, when usb resume, the flow as below: - hub_resume - usb_disable_interface - usb_disable_endpoint - usb_hcd_disable_endpoint - xhci_endpoint_disable // it set @ep->hcpriv to NULL Then when reset usb device, it will drop allocated endpoints, the flow as below: - usb_reset_and_verify_device - usb_hcd_alloc_bandwidth - xhci_mtk_drop_ep but @ep->hcpriv is already set to NULL, the bandwidth will be not released anymore. Due to the added endponts are stored in hash table, we can drop the check of @ep->hcpriv. Fixes: 4ce186665e7c ("usb: xhci-mtk: Do not use xhci's virt_dev in drop_endpoint") Cc: stable <stable@kernel.org> Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Link: https://lore.kernel.org/r/20220819080556.32215-2-chunfeng.yun@mediatek.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit 6020f480004a80cdad4ae5ee180a231c4f65595b upstream.

This happens when @udev->reset_resume is set to true, when usb resume,
the flow as below:
  - hub_resume
    - usb_disable_interface
      - usb_disable_endpoint
        - usb_hcd_disable_endpoint
          - xhci_endpoint_disable  // it set @ep->hcpriv to NULL

Then when reset usb device, it will drop allocated endpoints,
the flow as below:
  - usb_reset_and_verify_device
    - usb_hcd_alloc_bandwidth
      - xhci_mtk_drop_ep

but @ep->hcpriv is already set to NULL, the bandwidth will be not
released anymore.

Due to the added endponts are stored in hash table, we can drop the check
of @ep->hcpriv.

Fixes: 4ce186665e7c ("usb: xhci-mtk: Do not use xhci's virt_dev in drop_endpoint")
Cc: stable <stable@kernel.org>
Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Link: https://lore.kernel.org/r/20220819080556.32215-2-chunfeng.yun@mediatek.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
usb: xhci-mtk: relax TT periodic bandwidth allocation 2022-09-08T09:24:06+00:00 Chunfeng Yun chunfeng.yun@mediatek.com 2022-08-19T08:05:55+00:00 283a781b97547aea1c6f838557900ef498e9bcdc commit 8b13ea05117ffad4727b0971ed09122d5c91c4dc upstream. Currently uses the worst case byte budgets on FS/LS bus bandwidth, for example, for an isochronos IN endpoint with 192 bytes budget, it will consume the whole 5 uframes(188 * 5) while the actual FS bus budget should be just 192 bytes. It cause that many usb audio headsets with 3 interfaces (audio input, audio output, and HID) cannot be configured. To improve it, changes to use "approximate" best case budget for FS/LS bandwidth management. For the same endpoint from the above example, the approximate best case budget is now reduced to (188 * 2) bytes. Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Cc: stable <stable@kernel.org> Link: https://lore.kernel.org/r/20220819080556.32215-1-chunfeng.yun@mediatek.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit 8b13ea05117ffad4727b0971ed09122d5c91c4dc upstream.

Currently uses the worst case byte budgets on FS/LS bus bandwidth,
for example, for an isochronos IN endpoint with 192 bytes budget, it
will consume the whole 5 uframes(188 * 5) while the actual FS bus
budget should be just 192 bytes. It cause that many usb audio headsets
with 3 interfaces (audio input, audio output, and HID) cannot be
configured.
To improve it, changes to use "approximate" best case budget for FS/LS
bandwidth management. For the same endpoint from the above example,
the approximate best case budget is now reduced to (188 * 2) bytes.

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Cc: stable <stable@kernel.org>
Link: https://lore.kernel.org/r/20220819080556.32215-1-chunfeng.yun@mediatek.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
USB: core: Prevent nested device-reset calls 2022-09-08T09:24:06+00:00 Alan Stern stern@rowland.harvard.edu 2022-08-26T19:31:32+00:00 d5eb850b3e8836197a38475840725260b9783e94 commit 9c6d778800b921bde3bff3cff5003d1650f942d1 upstream. Automatic kernel fuzzing revealed a recursive locking violation in usb-storage: ============================================ WARNING: possible recursive locking detected 5.18.0 #3 Not tainted -------------------------------------------- kworker/1:3/1205 is trying to acquire lock: ffff888018638db8 (&us_interface_key[i]){+.+.}-{3:3}, at: usb_stor_pre_reset+0x35/0x40 drivers/usb/storage/usb.c:230 but task is already holding lock: ffff888018638db8 (&us_interface_key[i]){+.+.}-{3:3}, at: usb_stor_pre_reset+0x35/0x40 drivers/usb/storage/usb.c:230 ... stack backtrace: CPU: 1 PID: 1205 Comm: kworker/1:3 Not tainted 5.18.0 #3 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-1ubuntu1.1 04/01/2014 Workqueue: usb_hub_wq hub_event Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 print_deadlock_bug kernel/locking/lockdep.c:2988 [inline] check_deadlock kernel/locking/lockdep.c:3031 [inline] validate_chain kernel/locking/lockdep.c:3816 [inline] __lock_acquire.cold+0x152/0x3ca kernel/locking/lockdep.c:5053 lock_acquire kernel/locking/lockdep.c:5665 [inline] lock_acquire+0x1ab/0x520 kernel/locking/lockdep.c:5630 __mutex_lock_common kernel/locking/mutex.c:603 [inline] __mutex_lock+0x14f/0x1610 kernel/locking/mutex.c:747 usb_stor_pre_reset+0x35/0x40 drivers/usb/storage/usb.c:230 usb_reset_device+0x37d/0x9a0 drivers/usb/core/hub.c:6109 r871xu_dev_remove+0x21a/0x270 drivers/staging/rtl8712/usb_intf.c:622 usb_unbind_interface+0x1bd/0x890 drivers/usb/core/driver.c:458 device_remove drivers/base/dd.c:545 [inline] device_remove+0x11f/0x170 drivers/base/dd.c:537 __device_release_driver drivers/base/dd.c:1222 [inline] device_release_driver_internal+0x1a7/0x2f0 drivers/base/dd.c:1248 usb_driver_release_interface+0x102/0x180 drivers/usb/core/driver.c:627 usb_forced_unbind_intf+0x4d/0xa0 drivers/usb/core/driver.c:1118 usb_reset_device+0x39b/0x9a0 drivers/usb/core/hub.c:6114 This turned out not to be an error in usb-storage but rather a nested device reset attempt. That is, as the rtl8712 driver was being unbound from a composite device in preparation for an unrelated USB reset (that driver does not have pre_reset or post_reset callbacks), its ->remove routine called usb_reset_device() -- thus nesting one reset call within another. Performing a reset as part of disconnect processing is a questionable practice at best. However, the bug report points out that the USB core does not have any protection against nested resets. Adding a reset_in_progress flag and testing it will prevent such errors in the future. Link: https://lore.kernel.org/all/CAB7eexKUpvX-JNiLzhXBDWgfg2T9e9_0Tw4HQ6keN==voRbP0g@mail.gmail.com/ Cc: stable@vger.kernel.org Reported-and-tested-by: Rondreis <linhaoguo86@gmail.com> Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Link: https://lore.kernel.org/r/YwkflDxvg0KWqyZK@rowland.harvard.edu Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit 9c6d778800b921bde3bff3cff5003d1650f942d1 upstream.

Automatic kernel fuzzing revealed a recursive locking violation in
usb-storage:

============================================
WARNING: possible recursive locking detected
5.18.0 #3 Not tainted
--------------------------------------------
kworker/1:3/1205 is trying to acquire lock:
ffff888018638db8 (&us_interface_key[i]){+.+.}-{3:3}, at:
usb_stor_pre_reset+0x35/0x40 drivers/usb/storage/usb.c:230

but task is already holding lock:
ffff888018638db8 (&us_interface_key[i]){+.+.}-{3:3}, at:
usb_stor_pre_reset+0x35/0x40 drivers/usb/storage/usb.c:230

...

stack backtrace:
CPU: 1 PID: 1205 Comm: kworker/1:3 Not tainted 5.18.0 #3
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS
1.13.0-1ubuntu1.1 04/01/2014
Workqueue: usb_hub_wq hub_event
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
print_deadlock_bug kernel/locking/lockdep.c:2988 [inline]
check_deadlock kernel/locking/lockdep.c:3031 [inline]
validate_chain kernel/locking/lockdep.c:3816 [inline]
__lock_acquire.cold+0x152/0x3ca kernel/locking/lockdep.c:5053
lock_acquire kernel/locking/lockdep.c:5665 [inline]
lock_acquire+0x1ab/0x520 kernel/locking/lockdep.c:5630
__mutex_lock_common kernel/locking/mutex.c:603 [inline]
__mutex_lock+0x14f/0x1610 kernel/locking/mutex.c:747
usb_stor_pre_reset+0x35/0x40 drivers/usb/storage/usb.c:230
usb_reset_device+0x37d/0x9a0 drivers/usb/core/hub.c:6109
r871xu_dev_remove+0x21a/0x270 drivers/staging/rtl8712/usb_intf.c:622
usb_unbind_interface+0x1bd/0x890 drivers/usb/core/driver.c:458
device_remove drivers/base/dd.c:545 [inline]
device_remove+0x11f/0x170 drivers/base/dd.c:537
__device_release_driver drivers/base/dd.c:1222 [inline]
device_release_driver_internal+0x1a7/0x2f0 drivers/base/dd.c:1248
usb_driver_release_interface+0x102/0x180 drivers/usb/core/driver.c:627
usb_forced_unbind_intf+0x4d/0xa0 drivers/usb/core/driver.c:1118
usb_reset_device+0x39b/0x9a0 drivers/usb/core/hub.c:6114

This turned out not to be an error in usb-storage but rather a nested
device reset attempt.  That is, as the rtl8712 driver was being
unbound from a composite device in preparation for an unrelated USB
reset (that driver does not have pre_reset or post_reset callbacks),
its ->remove routine called usb_reset_device() -- thus nesting one
reset call within another.

Performing a reset as part of disconnect processing is a questionable
practice at best.  However, the bug report points out that the USB
core does not have any protection against nested resets.  Adding a
reset_in_progress flag and testing it will prevent such errors in the
future.

Link: https://lore.kernel.org/all/CAB7eexKUpvX-JNiLzhXBDWgfg2T9e9_0Tw4HQ6keN==voRbP0g@mail.gmail.com/
Cc: stable@vger.kernel.org
Reported-and-tested-by: Rondreis <linhaoguo86@gmail.com>
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Link: https://lore.kernel.org/r/YwkflDxvg0KWqyZK@rowland.harvard.edu
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
usb-storage: Add ignore-residue quirk for NXP PN7462AU 2022-09-08T09:24:05+00:00 Witold Lipieta witold.lipieta@thaumatec.com 2022-08-09T11:29:11+00:00 56b409037d62bfe3f66adcf317de796c98f3924d commit 2aa48857ad52236a9564c71183d6cc8893becd41 upstream. This is USB mass storage primary boot loader for code download on NXP PN7462AU. Without the quirk it is impossible to write whole memory at once as device restarts during the write due to bogus residue values reported. Acked-by: Alan Stern <stern@rowland.harvard.edu> Cc: stable <stable@kernel.org> Signed-off-by: Witold Lipieta <witold.lipieta@thaumatec.com> Link: https://lore.kernel.org/r/20220809112911.462776-1-witold.lipieta@thaumatec.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit 2aa48857ad52236a9564c71183d6cc8893becd41 upstream.

This is USB mass storage primary boot loader for code download on
NXP PN7462AU.

Without the quirk it is impossible to write whole memory at once as
device restarts during the write due to bogus residue values reported.

Acked-by: Alan Stern <stern@rowland.harvard.edu>
Cc: stable <stable@kernel.org>
Signed-off-by: Witold Lipieta <witold.lipieta@thaumatec.com>
Link: https://lore.kernel.org/r/20220809112911.462776-1-witold.lipieta@thaumatec.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
USB: cdc-acm: Add Icom PMR F3400 support (0c26:0020) 2022-09-08T09:24:05+00:00 Thierry GUIBERT thierry.guibert@croix-rouge.fr 2022-08-19T08:17:02+00:00 2ae507d6a554778a78c9d5746f2cefe6bcd8c814 commit a10bc71729b236fe36de0d8e4d35c959fd8dec3a upstream. Supports for ICOM F3400 and ICOM F4400 PMR radios in CDC-ACM driver enabling the AT serial port. The Vendor Id is 0x0C26 The Product ID is 0x0020 Output of lsusb : Bus 001 Device 009: ID 0c26:0020 Prolific Technology Inc. ICOM Radio Couldn't open device, some information will be missing Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 2.00 bDeviceClass 2 Communications bDeviceSubClass 0 bDeviceProtocol 0 bMaxPacketSize0 64 idVendor 0x0c26 Prolific Technology Inc. idProduct 0x0020 bcdDevice 0.00 iManufacturer 1 ICOM Inc. iProduct 2 ICOM Radio iSerial 3 *obfuscated* bNumConfigurations 1 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 0x0030 bNumInterfaces 2 bConfigurationValue 1 iConfiguration 0 bmAttributes 0xc0 Self Powered MaxPower 0mA Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 1 bInterfaceClass 2 Communications bInterfaceSubClass 2 Abstract (modem) bInterfaceProtocol 1 AT-commands (v.25ter) iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x83 EP 3 IN bmAttributes 3 Transfer Type Interrupt Synch Type None Usage Type Data wMaxPacketSize 0x0040 1x 64 bytes bInterval 12 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 1 bAlternateSetting 0 bNumEndpoints 2 bInterfaceClass 10 CDC Data bInterfaceSubClass 0 bInterfaceProtocol 0 iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x82 EP 2 IN bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0200 1x 512 bytes bInterval 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x02 EP 2 OUT bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0200 1x 512 bytes bInterval 0 Signed-off-by: Thierry GUIBERT <thierry.guibert@croix-rouge.fr> Cc: stable <stable@kernel.org> Link: https://lore.kernel.org/r/20220819081702.84118-1-thierry.guibert@croix-rouge.fr Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit a10bc71729b236fe36de0d8e4d35c959fd8dec3a upstream.

Supports for ICOM F3400 and ICOM F4400 PMR radios in CDC-ACM driver
enabling the AT serial port.
The Vendor Id is 0x0C26
The Product ID is 0x0020

Output of lsusb :
Bus 001 Device 009: ID 0c26:0020 Prolific Technology Inc. ICOM Radio
Couldn't open device, some information will be missing
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
  bDeviceClass            2 Communications
  bDeviceSubClass         0
  bDeviceProtocol         0
  bMaxPacketSize0        64
  idVendor           0x0c26 Prolific Technology Inc.
  idProduct          0x0020
  bcdDevice            0.00
  iManufacturer           1 ICOM Inc.
  iProduct                2 ICOM Radio
  iSerial                 3 *obfuscated*
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength       0x0030
    bNumInterfaces          2
    bConfigurationValue     1
    iConfiguration          0
    bmAttributes         0xc0
      Self Powered
    MaxPower                0mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           1
      bInterfaceClass         2 Communications
      bInterfaceSubClass      2 Abstract (modem)
      bInterfaceProtocol      1 AT-commands (v.25ter)
      iInterface              0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x83  EP 3 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval              12
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        1
      bAlternateSetting       0
      bNumEndpoints           2
      bInterfaceClass        10 CDC Data
      bInterfaceSubClass      0
      bInterfaceProtocol      0
      iInterface              0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x82  EP 2 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x02  EP 2 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               0

Signed-off-by: Thierry GUIBERT <thierry.guibert@croix-rouge.fr>
Cc: stable <stable@kernel.org>
Link: https://lore.kernel.org/r/20220819081702.84118-1-thierry.guibert@croix-rouge.fr
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
usb: cdns3: fix incorrect handling TRB_SMM flag for ISOC transfer 2022-09-08T09:24:05+00:00 Pawel Laszczak pawell@cadence.com 2022-08-25T06:22:07+00:00 459edcb1e1339d99a350a30c9dd0d7fc3d321522 commit d5dcc33677d7415c5f23b3c052f9e80cbab9ea4e upstream. The TRB_SMM flag indicates that DMA has completed the TD service with this TRB. Usually it’s a last TRB in TD. In case of ISOC transfer for bInterval > 1 each ISOC transfer contains more than one TD associated with usb request (one TD per ITP). In such case the TRB_SMM flag will be set in every TD and driver will recognize the end of transfer after processing the first TD with TRB_SMM. In result driver stops updating request->actual and returns incorrect actual length. To fix this issue driver additionally must check TRB_CHAIN which is not used for isochronous transfers. Fixes: 249f0a25e8be ("usb: cdns3: gadget: handle sg list use case at completion correctly") cc: <stable@vger.kernel.org> Acked-by: Peter Chen <peter.chen@kernel.org> Signed-off-by: Pawel Laszczak <pawell@cadence.com> Link: https://lore.kernel.org/r/20220825062207.5824-1-pawell@cadence.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit d5dcc33677d7415c5f23b3c052f9e80cbab9ea4e upstream.

The TRB_SMM flag indicates that DMA has completed the TD service with
this TRB. Usually it’s a last TRB in TD. In case of ISOC transfer for
bInterval > 1 each ISOC transfer contains more than one TD associated
with usb request (one TD per ITP). In such case the TRB_SMM flag will
be set in every TD and driver will recognize the end of transfer after
processing the first TD with TRB_SMM. In result driver stops updating
request->actual and returns incorrect actual length.
To fix this issue driver additionally must check TRB_CHAIN which is not
used for isochronous transfers.

Fixes: 249f0a25e8be ("usb: cdns3: gadget: handle sg list use case at completion correctly")
cc: <stable@vger.kernel.org>
Acked-by: Peter Chen <peter.chen@kernel.org>
Signed-off-by: Pawel Laszczak <pawell@cadence.com>
Link: https://lore.kernel.org/r/20220825062207.5824-1-pawell@cadence.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
usb: cdns3: fix issue with rearming ISO OUT endpoint 2022-09-08T09:24:05+00:00 Pawel Laszczak pawell@cadence.com 2022-08-25T06:21:37+00:00 142e8c06e5f9c110dc82173a282fbb7dc3b3b88a commit b46a6b09fa056042a302b181a1941f0056944603 upstream. ISO OUT endpoint is enabled during queuing first usb request in transfer ring and disabled when TRBERR is reported by controller. After TRBERR and before next transfer added to TR driver must again reenable endpoint but does not. To solve this issue during processing TRBERR event driver must set the flag EP_UPDATE_EP_TRBADDR in priv_ep->flags field. Fixes: 7733f6c32e36 ("usb: cdns3: Add Cadence USB3 DRD Driver") cc: <stable@vger.kernel.org> Acked-by: Peter Chen <peter.chen@kernel.org> Signed-off-by: Pawel Laszczak <pawell@cadence.com> Link: https://lore.kernel.org/r/20220825062137.5766-1-pawell@cadence.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit b46a6b09fa056042a302b181a1941f0056944603 upstream.

ISO OUT endpoint is enabled during queuing first usb request
in transfer ring and disabled when TRBERR is reported by controller.
After TRBERR and before next transfer added to TR driver must again
reenable endpoint but does not.
To solve this issue during processing TRBERR event driver must
set the flag EP_UPDATE_EP_TRBADDR in priv_ep->flags field.

Fixes: 7733f6c32e36 ("usb: cdns3: Add Cadence USB3 DRD Driver")
cc: <stable@vger.kernel.org>
Acked-by: Peter Chen <peter.chen@kernel.org>
Signed-off-by: Pawel Laszczak <pawell@cadence.com>
Link: https://lore.kernel.org/r/20220825062137.5766-1-pawell@cadence.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>