diff options
| author | fangying <fangying1@huawei.com> | 2019-08-28 14:25:35 +0800 |
|---|---|---|
| committer | Gerd Hoffmann <kraxel@redhat.com> | 2019-08-29 07:30:04 +0200 |
| commit | 7cec2ed9d7aeeb6f873188b96c9f8ae17ab88da1 (patch) | |
| tree | e5e952f8c5e3b3475a2fdb00e263c5831e902b90 /hw/usb | |
| parent | c9e385926232f30b7ea84e10725df57795ad0eb7 (diff) | |
xhci: Fix memory leak in xhci_kick_epctx
Address Sanitizer shows memory leak in xhci_kick_epctx hw/usb/hcd-xhci.c:1912.
A sglist is leaked when a packet is retired and returns USB_RET_NAK status.
The leak stack is as bellow:
Direct leak of 2688 byte(s) in 168 object(s) allocated from:
#0 0xffffae8b11db in __interceptor_malloc (/lib64/libasan.so.4+0xd31db)
#1 0xffffae5c9163 in g_malloc (/lib64/libglib-2.0.so.0+0x57163)
#2 0xaaaabb6fb3f7 in qemu_sglist_init dma-helpers.c:43
#3 0xaaaabba705a7 in pci_dma_sglist_init include/hw/pci/pci.h:837
#4 0xaaaabba705a7 in xhci_xfer_create_sgl hw/usb/hcd-xhci.c:1443
#5 0xaaaabba705a7 in xhci_setup_packet hw/usb/hcd-xhci.c:1615
#6 0xaaaabba77a6f in xhci_kick_epctx hw/usb/hcd-xhci.c:1912
#7 0xaaaabbdaad27 in timerlist_run_timers util/qemu-timer.c:592
#8 0xaaaabbdab19f in qemu_clock_run_timers util/qemu-timer.c:606
#9 0xaaaabbdab19f in qemu_clock_run_all_timers util/qemu-timer.c:692
#10 0xaaaabbdab9a3 in main_loop_wait util/main-loop.c:524
#11 0xaaaabb6ff5e7 in main_loop vl.c:1806
#12 0xaaaabb1e1453 in main vl.c:4488
Signed-off-by: Ying Fang <fangying1@huawei.com>
Message-id: 20190828062535.1573-1-fangying1@huawei.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Diffstat (limited to 'hw/usb')
| -rw-r--r-- | hw/usb/hcd-xhci.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/hw/usb/hcd-xhci.c b/hw/usb/hcd-xhci.c index 471759cd4c..80988bb305 100644 --- a/hw/usb/hcd-xhci.c +++ b/hw/usb/hcd-xhci.c @@ -1914,6 +1914,7 @@ static void xhci_kick_epctx(XHCIEPContext *epctx, unsigned int streamid) } usb_handle_packet(xfer->packet.ep->dev, &xfer->packet); if (xfer->packet.status == USB_RET_NAK) { + xhci_xfer_unmap(xfer); return; } xhci_try_complete_packet(xfer); |