From aca4967567aaa168ce51d54145ba970aafb135de Mon Sep 17 00:00:00 2001 From: Akihiko Odaki Date: Fri, 18 Apr 2025 14:51:48 +0900 Subject: [PATCH] hw/usb/hcd-xhci: Unmap canceled packet MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit When the Stop Endpoint Command is received, packets running asynchronously are canceled and then all packets are cleaned up. Packets running asynchronously hold the DMA mapping so cleaning the packets leak the mapping. Remove the mapping after canceling packets to fix the leak. Fixes: 62c6ae04cf43 ("xhci: Initial xHCI implementation") Signed-off-by: Akihiko Odaki Reviewed-by: Philippe Mathieu-Daudé Message-ID: <20250418-xhc-v1-1-bb32dab6a67e@daynix.com> Signed-off-by: Philippe Mathieu-Daudé --- hw/usb/hcd-xhci.c | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-) diff --git a/hw/usb/hcd-xhci.c b/hw/usb/hcd-xhci.c index b3785b8ba6..292c378bfc 100644 --- a/hw/usb/hcd-xhci.c +++ b/hw/usb/hcd-xhci.c @@ -1187,6 +1187,12 @@ static void xhci_ep_free_xfer(XHCITransfer *xfer) g_free(xfer); } +static void xhci_xfer_unmap(XHCITransfer *xfer) +{ + usb_packet_unmap(&xfer->packet, &xfer->sgl); + qemu_sglist_destroy(&xfer->sgl); +} + static int xhci_ep_nuke_one_xfer(XHCITransfer *t, TRBCCode report) { int killed = 0; @@ -1198,6 +1204,7 @@ static int xhci_ep_nuke_one_xfer(XHCITransfer *t, TRBCCode report) if (t->running_async) { usb_cancel_packet(&t->packet); + xhci_xfer_unmap(t); t->running_async = 0; killed = 1; } @@ -1480,12 +1487,6 @@ err: return -1; } -static void xhci_xfer_unmap(XHCITransfer *xfer) -{ - usb_packet_unmap(&xfer->packet, &xfer->sgl); - qemu_sglist_destroy(&xfer->sgl); -} - static void xhci_xfer_report(XHCITransfer *xfer) { uint32_t edtla = 0; -- 2.39.5