diff options
| author | Liang He <windhl@126.com> | 2022-09-19 13:48:24 +0300 |
|---|---|---|
| committer | Johan Hovold <johan@kernel.org> | 2022-09-19 16:30:16 +0300 |
| commit | 61dfa797c731754642d1ac500a6ac42f9b47f920 (patch) | |
| tree | 13bd4584403350ae7845faf4bd515a2beeb45246 /drivers/usb/serial | |
| parent | 0f6632e2e8beb6a1e0895c1309dd0b84b805c202 (diff) | |
| download | linux-61dfa797c731754642d1ac500a6ac42f9b47f920.tar.xz | |
USB: serial: console: move mutex_unlock() before usb_serial_put()
While in current version there is no use-after-free as USB serial
core holds another reference when the console is registered, we
should better unlock before dropping the reference in
usb_console_setup().
Fixes: 7bd032dc2793 ("USB serial: update the console driver")
Signed-off-by: Liang He <windhl@126.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Diffstat (limited to 'drivers/usb/serial')
| -rw-r--r-- | drivers/usb/serial/console.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/usb/serial/console.c b/drivers/usb/serial/console.c index b97aa40ca4d1..da19a5fa414f 100644 --- a/drivers/usb/serial/console.c +++ b/drivers/usb/serial/console.c @@ -189,8 +189,8 @@ static int usb_console_setup(struct console *co, char *options) info->port = NULL; usb_autopm_put_interface(serial->interface); error_get_interface: - usb_serial_put(serial); mutex_unlock(&serial->disc_mutex); + usb_serial_put(serial); return retval; } |