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usb: gadget: udc: add return value check of kzalloc in mv_udc_probe

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Even an 8-byte kzalloc will fail when we don't have enough memory,
so we need a nullptr check and do the cleanup when it fails.

Reported-by: eriri <1527030098@qq.com>
Link: https://bugzilla.kernel.org/show_bug.cgi?id=217081
Signed-off-by: Kang Chen <void0red@gmail.com>
Link: https://lore.kernel.org/r/20230225041149.136-1-void0red@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Kang Chen 2023-02-25 12:11:48 +08:00 committed by Greg Kroah-Hartman
parent 2ae4e0dea3
commit 5aacc9d540
1 changed files with 4 additions and 0 deletions
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4
drivers/usb/gadget/udc/mv_udc_core.c
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@ -2230,6 +2230,10 @@ static int mv_udc_probe(struct platform_device *pdev)
/* allocate a small amount of memory to get valid address */
udc->status_req->req.buf = kzalloc(8, GFP_KERNEL);
if (!udc->status_req->req.buf) {
retval = -ENOMEM;
goto err_destroy_dma;
}
udc->status_req->req.dma = DMA_ADDR_INVALID;
udc->resume_state = USB_STATE_NOTATTACHED;