linux-kernel - Re: [PATCH] tty: fix memory leak in vc

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Message-ID: <YGBCKBtrirh5GmVP@kroah.com>
Date:   Sun, 28 Mar 2021 10:45:28 +0200
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Pavel Skripkin <paskripkin@...il.com>
Cc:     jirislaby@...nel.org, linux-kernel@...r.kernel.org,
        syzbot+bcc922b19ccc64240b42@...kaller.appspotmail.com
Subject: Re: [PATCH] tty: fix memory leak in vc_deallocate

On Sun, Mar 28, 2021 at 12:44:43AM +0300, Pavel Skripkin wrote:
> syzbot reported memory leak in tty/vt.
> The problem was in VT_DISALLOCATE ioctl cmd.
> After allocating unimap with PIO_UNIMAP it wasn't
> freed via VT_DISALLOCATE, but vc_cons[currcons].d was
> zeroed.
> 
> Signed-off-by: Pavel Skripkin <paskripkin@...il.com>
> Reported-by: syzbot+bcc922b19ccc64240b42@...kaller.appspotmail.com
> ---
>  drivers/tty/vt/vt.c | 1 +
>  1 file changed, 1 insertion(+)

Is this patch tested by syzbot to fix the problem?

thanks,

greg k-h