From 884b10e86a0593db423ae14797c07785a69a8ca2 Mon Sep 17 00:00:00 2001 From: Gurumoorthy Santhakumar Date: Thu, 16 Apr 2026 11:25:01 +0530 Subject: [PATCH] usb: dwc3: core: fix memory leaks in event buffer cleanup In dwc3_free_one_event_buffer(), only the DMA buffer (evt->buf) was being freed via dma_free_coherent(), but the evt structure itself was never explicitly freed, causing a memory leak. In dwc3_free_event_buffers(), the ev_buffs pointer array allocated with memalign() was never freed after iterating and releasing all individual event buffers, causing another memory leak. Fix both leaks by freeing the evt struct in dwc3_free_one_event_buffer() and freeing dwc->ev_buffs in dwc3_free_event_buffers() after all entries have been released. Signed-off-by: Gurumoorthy Santhakumar Reviewed-by: Marek Vasut Reviewed-by: Mattijs Korpershoek --- drivers/usb/dwc3/core.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index 6f22b9232ba..65c4d1a4e6f 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -206,6 +206,7 @@ static void dwc3_free_one_event_buffer(struct dwc3 *dwc, struct dwc3_event_buffer *evt) { dma_free_coherent(evt->buf); + free(evt); } /** @@ -252,6 +253,8 @@ static void dwc3_free_event_buffers(struct dwc3 *dwc) if (evt) dwc3_free_one_event_buffer(dwc, evt); } + + free(dwc->ev_buffs); } /**