Messages in this thread | | | Date | Mon, 6 Nov 2023 13:56:50 +0100 | From | Greg KH <> | Subject | Re: [Patch v7 2/6] leds: ledtrig-tty: free allocated ttyname buffer on deactivate |
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On Mon, Nov 06, 2023 at 01:34:11PM +0100, Florian Eckert wrote: > The ttyname buffer for the ledtrig_tty_data struct is allocated in the > sysfs ttyname_store() function. This buffer must be released on trigger > deactivation. This was missing and is thus a memory leak. > > While we are at it, the tty handler in the ledtrig_tty_data struct should > also be returned in case of the trigger deactivation call. > > Fixes: fd4a641ac88f ("leds: trigger: implement a tty trigger") > Signed-off-by: Florian Eckert <fe@dev.tdt.de> > --- > drivers/leds/trigger/ledtrig-tty.c | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/drivers/leds/trigger/ledtrig-tty.c b/drivers/leds/trigger/ledtrig-tty.c > index 8ae0d2d284af..3e69a7bde928 100644 > --- a/drivers/leds/trigger/ledtrig-tty.c > +++ b/drivers/leds/trigger/ledtrig-tty.c > @@ -168,6 +168,10 @@ static void ledtrig_tty_deactivate(struct led_classdev *led_cdev) > > cancel_delayed_work_sync(&trigger_data->dwork); > > + kfree(trigger_data->ttyname); > + tty_kref_put(trigger_data->tty); > + trigger_data->tty = NULL; > + > kfree(trigger_data); > } > > -- > 2.30.2 >
This should be sent independent of your new changes please, as it is a bugfix for all kernels.
thanks,
greg k-h
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