From: Alexey Klimov <klimov.li...@gmail.com>
3.12-stable review patch. If anyone has any objections, please let me know.
===============
commit 647024a7df36014bbc4479d92d88e6b77c0afcf6 upstream.
udriver struct allocated by kzalloc() will not be freed
if usb_register() and next calls fail. This patch fixes this
by adding one more step with kfree(udriver) in error path.
Signed-off-by: Alexey Klimov <klimov.li...@gmail.com>
Acked-by: Alan Stern <st...@rowland.harvard.edu>
Signed-off-by: Johan Hovold <jo...@kernel.org>
Signed-off-by: Jiri Slaby <jsl...@suse.cz>
---
drivers/usb/serial/usb-serial.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c
index c56752273bf5..137908af7c4c 100644
--- a/drivers/usb/serial/usb-serial.c
+++ b/drivers/usb/serial/usb-serial.c
@@ -1426,7 +1426,7 @@ int usb_serial_register_drivers(struct usb_serial_driver
*const serial_drivers[]
rc = usb_register(udriver);
if (rc)
- return rc;
+ goto failed_usb_register;
for (sd = serial_drivers; *sd; ++sd) {
(*sd)->usb_driver = udriver;
@@ -1444,6 +1444,8 @@ int usb_serial_register_drivers(struct usb_serial_driver
*const serial_drivers[]
while (sd-- > serial_drivers)
usb_serial_deregister(*sd);
usb_deregister(udriver);
+failed_usb_register:
+ kfree(udriver);
return rc;
}
EXPORT_SYMBOL_GPL(usb_serial_register_drivers);
--
2.10.0
