From: Evgeny Novikov <novikov@xxxxxxxxx> [ Upstream commit c8f8529e2c4141afa2ebb487ad48e8a6ec3e8c99 ] gr_ep_init() does not assign the allocated request anywhere if allocation of memory for the buffer fails. This is a memory leak fixed by the given patch. Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by: Evgeny Novikov <novikov@xxxxxxxxx> Signed-off-by: Felipe Balbi <balbi@xxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- drivers/usb/gadget/udc/gr_udc.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/usb/gadget/udc/gr_udc.c b/drivers/usb/gadget/udc/gr_udc.c index 116d386472efe..da73a06c20a39 100644 --- a/drivers/usb/gadget/udc/gr_udc.c +++ b/drivers/usb/gadget/udc/gr_udc.c @@ -1980,9 +1980,12 @@ static int gr_ep_init(struct gr_udc *dev, int num, int is_in, u32 maxplimit) if (num == 0) { _req = gr_alloc_request(&ep->ep, GFP_ATOMIC); + if (!_req) + return -ENOMEM; + buf = devm_kzalloc(dev->dev, PAGE_SIZE, GFP_DMA | GFP_ATOMIC); - if (!_req || !buf) { - /* possible _req freed by gr_probe via gr_remove */ + if (!buf) { + gr_free_request(&ep->ep, _req); return -ENOMEM; } -- 2.25.1