linux-kernel - Re: [PATCH] kernel/printk/index.c: fix memory leak with using debugfs

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Message-ID: <Y+OTrA6E3ld+awa7@kroah.com>
Date:   Wed, 8 Feb 2023 13:21:00 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Petr Mladek <pmladek@...e.com>
Cc:     linux-kernel@...r.kernel.org, Chris Down <chris@...isdown.name>,
        Sergey Senozhatsky <senozhatsky@...omium.org>,
        Steven Rostedt <rostedt@...dmis.org>,
        John Ogness <john.ogness@...utronix.de>
Subject: Re: [PATCH] kernel/printk/index.c: fix memory leak with using
 debugfs_lookup()

On Fri, Feb 03, 2023 at 11:16:17AM +0100, Petr Mladek wrote:
> On Thu 2023-02-02 16:14:11, Greg Kroah-Hartman wrote:
> > When calling debugfs_lookup() the result must have dput() called on it,
> > otherwise the memory will leak over time.  To make things simpler, just
> > call debugfs_lookup_and_remove() instead which handles all of the logic
> > at once.
> > 
> > Cc: Chris Down <chris@...isdown.name>
> > Cc: Petr Mladek <pmladek@...e.com>
> > Cc: Sergey Senozhatsky <senozhatsky@...omium.org>
> > Cc: Steven Rostedt <rostedt@...dmis.org>
> > Cc: John Ogness <john.ogness@...utronix.de>
> > Cc: linux-kernel@...r.kernel.org
> > Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> 
> JFYI, the patch has been committed into printk/linux.git, branch for-6.3.

Wonderful, thank you!

greg k-h