This is a note to let you know that I've just added the patch titled
USB: XHCI: fix memory leak of URB-private data
to my usb git tree which can be found at
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git
in the usb-linus branch.
The patch will show up in the next release of the linux-next tree
(usually sometime within the next 24 hours during the week.)
The patch will hopefully also be merged in Linus's tree for the
next -rc kernel release.
If you have any questions about this process, please let me know.
>From 48c3375c5f69b1c2ef3d1051a0009cb9bce0ce24 Mon Sep 17 00:00:00 2001
From: Alan Stern <[email protected]>
Date: Thu, 17 Jan 2013 10:32:16 -0500
Subject: USB: XHCI: fix memory leak of URB-private data
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 <[email protected]>
Signed-off-by: Sarah Sharp <[email protected]>
Reported-and-tested-by: Martin Mokrejs <[email protected]>
CC: <[email protected]>
---
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
&&
--
1.8.1.rc1.5.g7e0651a
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