| Date | Sun, 17 Feb 2013 22:50:05 +0000 | From | Ben Hutchings <> | Subject | [ 04/66] USB: XHCI: fix memory leak of URB-private data |
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3.2-stable review patch. If anyone has any objections, please let me know.
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From: Alan Stern <stern@rowland.harvard.edu>
commit 48c3375c5f69b1c2ef3d1051a0009cb9bce0ce24 upstream.
This patch (as1640) fixes a memory leak in xhci-hcd. The urb_priv data structure isn't always deallocated in the handle_tx_event() routine for non-control transfers. The patch adds a kfree() call so that all paths end up freeing the memory properly.
This patch should be backported to kernels as old as 2.6.36, that contain the commit 8e51adccd4c4b9ffcd509d7f2afce0a906139f75 "USB: xHCI: Introduce urb_priv structure"
Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com> Reported-and-tested-by: Martin Mokrejs <mmokrejs@fold.natur.cuni.cz> Signed-off-by: Ben Hutchings <ben@decadent.org.uk> --- drivers/usb/host/xhci-ring.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index 1512046..7f76a49 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -2589,6 +2589,8 @@ cleanup: (trb_comp_code != COMP_STALL && trb_comp_code != COMP_BABBLE)) xhci_urb_free_priv(xhci, urb_priv); + else + kfree(urb_priv); usb_hcd_unlink_urb_from_ep(bus_to_hcd(urb->dev->bus), urb); if ((urb->actual_length != urb->transfer_buffer_length &&
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