Hello, This patch makes sure we don't dereference a NULL pointer in drivers/net/usb/pegasus.c::write_bulk_callback() in the initial struct net_device *net = pegasus->net; assignment. The existing code checks if 'pegasus' is NULL and bails out if it is, so we better not touch that pointer until after that check.
Please consider merging. Signed-off-by: Jesper Juhl <[EMAIL PROTECTED]> --- drivers/net/usb/pegasus.c | 4 +++- 1 files changed, 3 insertions(+), 1 deletions(-) diff --git a/drivers/net/usb/pegasus.c b/drivers/net/usb/pegasus.c index a05fd97..04cba6b 100644 --- a/drivers/net/usb/pegasus.c +++ b/drivers/net/usb/pegasus.c @@ -768,11 +768,13 @@ done: static void write_bulk_callback(struct urb *urb) { pegasus_t *pegasus = urb->context; - struct net_device *net = pegasus->net; + struct net_device *net; if (!pegasus) return; + net = pegasus->net; + if (!netif_device_present(net) || !netif_running(net)) return; - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/