linux-kernel - Re: [PATCH 0/1] devpts: use dynamic

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Message-ID: <CA+55aFyJsxsxeW-8RX83AM2zs+_i8h85i99X+YkuFEqpqjtp4w@mail.gmail.com>
Date:   Wed, 16 Aug 2017 15:58:02 -0700
From:   Linus Torvalds <torvalds@...ux-foundation.org>
To:     "Eric W. Biederman" <ebiederm@...ssion.com>
Cc:     Christian Brauner <christian.brauner@...onical.com>,
        Christian Brauner <christian.brauner@...ntu.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        "Serge E. Hallyn" <serge@...lyn.com>,
        Al Viro <viro@...iv.linux.org.uk>
Subject: Re: [PATCH 0/1] devpts: use dynamic_dname() to generate proc name

On Wed, Aug 16, 2017 at 3:46 PM, Eric W. Biederman
<ebiederm@...ssion.com> wrote:
>>       tty->link->driver_data = pts_path;
>>
>>       retval = ptm_driver->ops->open(tty, filp);
>         ^^^^^^^
>
> If this open fails the code jumps to err_put_path which falls
> through into out_put_fsi.

No it doesn't.

err_path_put falls through to err_release, but that then does a
"return retval;". It doesn't get to out_put_fsi.

Now, I _do_ want people to check the release path, but I don't think
this was it.  Or am I blind and missing something?

                 Linus