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USB: serial: fix memleak in driver-registration error path 

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.linux@gmail.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
This commit is contained in:
Alexey Klimov 2016-08-08 02:34:46 +01:00 committed by Johan Hovold
parent 01d7956b58
commit 647024a7df
1 changed files with 3 additions and 1 deletions
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4
drivers/usb/serial/usb-serial.c
View File

@ -1433,7 +1433,7 @@ 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;
@ -1451,6 +1451,8 @@ 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);