patch "serial: ifx6x60: fix use-after-free on module unload" added to tty-linus

This is a note to let you know that I've just added the patch titled

serial: ifx6x60: fix use-after-free on module unload

to my tty git tree which can be found at
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git
in the tty-linus branch.

The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.)

The patch will hopefully also be merged in Linus's tree for the next -rc kernel release.

If you have any questions about this process, please let me know.

From: Johan Hovold <[email protected]>
Date: Wed, 26 Apr 2017 12:24:21 +0200
Subject: serial: ifx6x60: fix use-after-free on module unload

Make sure to deregister the SPI driver before releasing the tty driver to avoid use-after-free in the SPI remove callback where the tty devices are deregistered.

---
 drivers/tty/serial/ifx6x60.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

index 157883653256..f190a84a0246 100644
@@ -1382,9 +1382,9 @@ static struct spi_driver ifx_spi_driver = {
 static void __exit ifx_spi_exit(void)
 {
 	/* unregister */
+	spi_unregister_driver(&ifx_spi_driver);
 	tty_unregister_driver(tty_drv);
 	put_tty_driver(tty_drv);
-	spi_unregister_driver(&ifx_spi_driver);
 	unregister_reboot_notifier(&ifx_modem_reboot_notifier_block);
 }
 

2.13.0