4.4-stable review patch. If anyone has any objections, please let me know.
------------------ From: Alexey Khoroshilov <[email protected]> commit 5a5a1d614287a647b36dff3f40c2b0ceabbc83ec upstream. There is an allocation with GFP_KERNEL flag in mos7720_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 <[email protected]> Signed-off-by: Johan Hovold <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- drivers/usb/serial/mos7720.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/usb/serial/mos7720.c +++ b/drivers/usb/serial/mos7720.c @@ -1252,7 +1252,7 @@ static int mos7720_write(struct tty_stru if (urb->transfer_buffer == NULL) { urb->transfer_buffer = kmalloc(URB_TRANSFER_BUFFER_SIZE, - GFP_KERNEL); + GFP_ATOMIC); if (!urb->transfer_buffer) goto exit; }
