This is a note to let you know that I've just added the patch titled
net: can: usb: gs_usb: Fix buffer on stack
to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
net-can-usb-gs_usb-fix-buffer-on-stack.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From b05c73bd1e3ec60357580eb042ee932a5ed754d5 Mon Sep 17 00:00:00 2001
From: Maksim Salau <maksim.salau@xxxxxxxxx>
Date: Sun, 23 Apr 2017 20:31:40 +0300
Subject: net: can: usb: gs_usb: Fix buffer on stack
From: Maksim Salau <maksim.salau@xxxxxxxxx>
commit b05c73bd1e3ec60357580eb042ee932a5ed754d5 upstream.
Allocate buffers on HEAP instead of STACK for local structures
that are to be sent using usb_control_msg().
Signed-off-by: Maksim Salau <maksim.salau@xxxxxxxxx>
Signed-off-by: Marc Kleine-Budde <mkl@xxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/net/can/usb/gs_usb.c | 17 ++++++++++++-----
1 file changed, 12 insertions(+), 5 deletions(-)
--- a/drivers/net/can/usb/gs_usb.c
+++ b/drivers/net/can/usb/gs_usb.c
@@ -740,13 +740,18 @@ static const struct net_device_ops gs_us
static int gs_usb_set_identify(struct net_device *netdev, bool do_identify)
{
struct gs_can *dev = netdev_priv(netdev);
- struct gs_identify_mode imode;
+ struct gs_identify_mode *imode;
int rc;
+ imode = kmalloc(sizeof(*imode), GFP_KERNEL);
+
+ if (!imode)
+ return -ENOMEM;
+
if (do_identify)
- imode.mode = GS_CAN_IDENTIFY_ON;
+ imode->mode = GS_CAN_IDENTIFY_ON;
else
- imode.mode = GS_CAN_IDENTIFY_OFF;
+ imode->mode = GS_CAN_IDENTIFY_OFF;
rc = usb_control_msg(interface_to_usbdev(dev->iface),
usb_sndctrlpipe(interface_to_usbdev(dev->iface),
@@ -756,10 +761,12 @@ static int gs_usb_set_identify(struct ne
USB_RECIP_INTERFACE,
dev->channel,
0,
- &imode,
- sizeof(imode),
+ imode,
+ sizeof(*imode),
100);
+ kfree(imode);
+
return (rc > 0) ? 0 : rc;
}
Patches currently in stable-queue which might be from maksim.salau@xxxxxxxxx are
queue-4.9/net-can-usb-gs_usb-fix-buffer-on-stack.patch