From: Vladislav Efanov VEfanov@ispras.ru
[ Upstream commit 097fb3ee710d4de83b8d4f5589e8ee13e0f0541e ]
Function dwc3_qcom_probe() allocates memory for resource structure which is pointed by parent_res pointer. This memory is not freed. This leads to memory leak. Use stack memory to prevent memory leak.
Found by Linux Verification Center (linuxtesting.org) with SVACE.
Fixes: 2bc02355f8ba ("usb: dwc3: qcom: Add support for booting with ACPI") Signed-off-by: Vladislav Efanov VEfanov@ispras.ru Acked-by: Shawn Guo shawn.guo@linaro.org Link: https://lore.kernel.org/r/20230517172518.442591-1-VEfanov@ispras.ru Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/usb/dwc3/dwc3-qcom.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/usb/dwc3/dwc3-qcom.c b/drivers/usb/dwc3/dwc3-qcom.c index 79b22abf97276..482260182d656 100644 --- a/drivers/usb/dwc3/dwc3-qcom.c +++ b/drivers/usb/dwc3/dwc3-qcom.c @@ -800,6 +800,7 @@ static int dwc3_qcom_probe(struct platform_device *pdev) struct device *dev = &pdev->dev; struct dwc3_qcom *qcom; struct resource *res, *parent_res = NULL; + struct resource local_res; int ret, i; bool ignore_pipe_clk; bool wakeup_source; @@ -851,9 +852,8 @@ static int dwc3_qcom_probe(struct platform_device *pdev) if (np) { parent_res = res; } else { - parent_res = kmemdup(res, sizeof(struct resource), GFP_KERNEL); - if (!parent_res) - return -ENOMEM; + memcpy(&local_res, res, sizeof(struct resource)); + parent_res = &local_res;
parent_res->start = res->start + qcom->acpi_pdata->qscratch_base_offset;