On Fri, Aug 12, 2016 at 01:05:09AM +0300, Alexey Khoroshilov wrote:
> There is an allocation with GFP_KERNEL flag in mos7840_write(),
> while it may be called from interrupt context.
>
> Follow-up for commit 191252837626 ("USB: kobil_sct: fix non-atomic allocation in write path")
>
> Found by Linux Driver Verification project (linuxtesting.org).
>
> Signed-off-by: Alexey Khoroshilov <khoroshilov@xxxxxxxxx>
> ---
> drivers/usb/serial/mos7840.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/usb/serial/mos7840.c b/drivers/usb/serial/mos7840.c
> index ed378fb232e7..1de2c01c078d 100644
> --- a/drivers/usb/serial/mos7840.c
> +++ b/drivers/usb/serial/mos7840.c
> @@ -1341,7 +1341,7 @@ static int mos7840_write(struct tty_struct *tty, struct usb_serial_port *port,
>
> if (urb->transfer_buffer == NULL) {
> urb->transfer_buffer =
> - kmalloc(URB_TRANSFER_BUFFER_SIZE, GFP_KERNEL);
> + kmalloc(URB_TRANSFER_BUFFER_SIZE, GFP_ATOMIC);
Both patches now applied. I fixed up the odd indentation here while at
it.
Thanks,
Johan
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