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| author | Johan Hovold <johan@kernel.org> | 2017-04-26 12:24:21 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-05-18 16:43:55 +0200 |
| commit | 1e948479b3d63e3ac0ecca13cbf4921c7d17c168 (patch) | |
| tree | 3ddc8770c4694b8652b7353f7ba42433f57f8897 /drivers/tty | |
| parent | serial: altera_jtaguart: adding iounmap() (diff) | |
| download | linux-1e948479b3d63e3ac0ecca13cbf4921c7d17c168.tar.xz linux-1e948479b3d63e3ac0ecca13cbf4921c7d17c168.zip | |
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.
Fixes: 72d4724ea54c ("serial: ifx6x60: Add modem power off function in the platform reboot process")
Cc: stable <stable@vger.kernel.org> # 3.8
Cc: Jun Chen <jun.d.chen@intel.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/serial/ifx6x60.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/tty/serial/ifx6x60.c b/drivers/tty/serial/ifx6x60.c index 157883653256..f190a84a0246 100644 --- a/drivers/tty/serial/ifx6x60.c +++ b/drivers/tty/serial/ifx6x60.c @@ -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); } |