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

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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.linux@gmail.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Alexey Klimov 2016-08-08 02:34:46 +01:00 committed by Greg Kroah-Hartman
parent c5a6d60b93
commit 697c84be4b
1 changed files with 3 additions and 1 deletions
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4
drivers/usb/serial/usb-serial.c
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@ -1432,7 +1432,7 @@ 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;
@ -1450,6 +1450,8 @@ 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);