Commit fe7c1f5d authored by Alexey Khoroshilov's avatar Alexey Khoroshilov Committed by Greg Kroah-Hartman

USB: serial: mos7720: fix non-atomic allocation in write path

commit 5a5a1d61 upstream.

There is an allocation with GFP_KERNEL flag in mos7720_write(),
while it may be called from interrupt context.

Follow-up for commit 19125283 ("USB: kobil_sct: fix non-atomic
allocation in write path")

Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: default avatarAlexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: default avatarJohan Hovold <johan@kernel.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent b10f4ba6
......@@ -1239,7 +1239,7 @@ static int mos7720_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);
GFP_ATOMIC);
if (!urb->transfer_buffer)
goto exit;
}
......
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