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phy: tegra: xusb: Clear the driver reference in usb-phy dev
commitc0c2fcb132
upstream. For the dual-role port, it will assign the phy dev to usb-phy dev and use the port dev driver as the dev driver of usb-phy. When we try to destroy the port dev, it will destroy its dev driver as well. But we did not remove the reference from usb-phy dev. This might cause the use-after-free issue in KASAN. Fixes:e8f7d2f409
("phy: tegra: xusb: Add usb-phy support") Cc: stable@vger.kernel.org Signed-off-by: EJ Hsu <ejh@nvidia.com> Signed-off-by: Haotien Hsu <haotienh@nvidia.com> Acked-by: Thierry Reding <treding@nvidia.com> Acked-by: Jon Hunter <jonathanh@nvidia.com> Link: https://lore.kernel.org/r/20230609062932.3276509-1-haotienh@nvidia.com Signed-off-by: Vinod Koul <vkoul@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -562,6 +562,7 @@ static void tegra_xusb_port_unregister(struct tegra_xusb_port *port)
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usb_role_switch_unregister(port->usb_role_sw);
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cancel_work_sync(&port->usb_phy_work);
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usb_remove_phy(&port->usb_phy);
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port->usb_phy.dev->driver = NULL;
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}
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if (port->ops->remove)
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