Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 4.19 102/118] can: kvaser_usb: Fix potential uninitialized variable use | Date | Mon, 26 Nov 2018 11:51:36 +0100 |
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4.19-stable review patch. If anyone has any objections, please let me know.
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From: Jimmy Assarsson <jimmyassarsson@gmail.com>
commit 95217260649aa504eb5d4a0d50959ca4e67c8f96 upstream.
If alloc_can_err_skb() fails, cf is never initialized. Move assignment of cf inside check.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Jimmy Assarsson <jimmyassarsson@gmail.com> Cc: linux-stable <stable@vger.kernel.org> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- drivers/net/can/usb/kvaser_usb/kvaser_usb_hydra.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-)
--- a/drivers/net/can/usb/kvaser_usb/kvaser_usb_hydra.c +++ b/drivers/net/can/usb/kvaser_usb/kvaser_usb_hydra.c @@ -1019,6 +1019,11 @@ kvaser_usb_hydra_error_frame(struct kvas new_state : CAN_STATE_ERROR_ACTIVE; can_change_state(netdev, cf, tx_state, rx_state); + + if (priv->can.restart_ms && + old_state >= CAN_STATE_BUS_OFF && + new_state < CAN_STATE_BUS_OFF) + cf->can_id |= CAN_ERR_RESTARTED; } if (new_state == CAN_STATE_BUS_OFF) { @@ -1028,11 +1033,6 @@ kvaser_usb_hydra_error_frame(struct kvas can_bus_off(netdev); } - - if (priv->can.restart_ms && - old_state >= CAN_STATE_BUS_OFF && - new_state < CAN_STATE_BUS_OFF) - cf->can_id |= CAN_ERR_RESTARTED; } if (!skb) {
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