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: Willy Tarreau <[email protected]>
---
drivers/usb/serial/mos7720.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/usb/serial/mos7720.c b/drivers/usb/serial/mos7720.c
index 0f16bf6e..ddc71d7 100644
--- a/drivers/usb/serial/mos7720.c
+++ b/drivers/usb/serial/mos7720.c
@@ -1250,7 +1250,7 @@ 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 == NULL) {
dev_err_console(port, "%s no more kernel memory...\n",
__func__);
--
2.8.0.rc2.1.gbe9624a
