[Bug 219977] New: usb: dwc2: memory leak of hsotg->regset

[Bug 219977] New: usb: dwc2: memory leak of hsotg->regset

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=219977

            Bug ID: 219977
           Summary: usb: dwc2: memory leak of hsotg->regset
           Product: Drivers
           Version: 2.5
          Hardware: All
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P3
         Component: USB
          Assignee: drivers_usb@kernel-bugs.kernel.org
          Reporter: kakapapa2@gmail.com
        Regression: No

Hi,

In drivers/usb/dwc2/debugfs.c line 790:
https://web.git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/tree/drivers/usb/dwc2/debugfs.c?h=v6.13.9

790:
        hsotg->regset = devm_kzalloc(hsotg->dev, sizeof(*hsotg->regset),
                                                                GFP_KERNEL);

"hsotg->regset" is allocated but not be released in dwc2_debugfs_exit().

FYI.
dwc3 was fixed same issue in commit e6bdf8195b4a43ebff71f25fc7ca5e436e79161a.

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[Bug 219977] usb: dwc2: memory leak of hsotg->regset

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=219977

Wei Huang (huangwei@kylinos.cn) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |huangwei@kylinos.cn

--- Comment #1 from Wei Huang (huangwei@kylinos.cn) ---
Hi kakapapa2,

Thanks for reporting this. A fix has been submitted to the linux-usb mailing
list:
https://lore.kernel.org/linux-usb/?q=huangwei%40kylinos.cn

The fix mirrors the equivalent dwc3 fix (commit e6bdf8195b4a) by
switching hsotg->regset from devm_kzalloc() to kzalloc() and freeing
it explicitly in dwc2_debugfs_exit().

https://lore.kernel.org/linux-usb/20260807100400.3179625-1-huangwei@kylinos.cn/

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