Commit 5aacc9d5 authored by Kang Chen's avatar Kang Chen Committed by Greg Kroah-Hartman
Browse files

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



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: default avatareriri <1527030098@qq.com>
Link: https://bugzilla.kernel.org/show_bug.cgi?id=217081


Signed-off-by: default avatarKang Chen <void0red@gmail.com>
Link: https://lore.kernel.org/r/20230225041149.136-1-void0red@gmail.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 2ae4e0de

drivers/usb/gadget/udc/mv_udc_core.c

+4 −0
Original line number Diff line number Diff line
@@ -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;