From: Peilin Ye <yepeilin.cs@gmail.com>
To: Daniel Vetter <daniel@ffwll.ch>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Jiri Slaby <jirislaby@kernel.org>,
Thomas Winischhofer <thomas@winischhofer.net>,
Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>,
Nicolas Pitre <nico@fluxnic.net>,
"Gustavo A . R . Silva" <gustavoars@kernel.org>,
Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>,
George Kennedy <george.kennedy@oracle.com>,
Nathan Chancellor <natechancellor@gmail.com>,
Peter Rosin <peda@axentia.se>,
linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org,
dri-devel@lists.freedesktop.org, linux-fbdev@vger.kernel.org
Subject: Re: [PATCH v2 2/2] tty/vt: Avoid passing struct console_font_op to con_font_copy()
Date: Mon, 2 Nov 2020 06:12:48 -0500 [thread overview]
Message-ID: <20201102111248.GA1558630@PWN> (raw)
In-Reply-To: <20201102101044.GM401619@phenom.ffwll.local>
On Mon, Nov 02, 2020 at 11:10:44AM +0100, Daniel Vetter wrote:
> I'm not sure switching from int to unsigned just here makes much sense.
> All the console code is still using int con to index all the various
> arrays (I just checked fbcon.c code), and using int to index arrays is
> pretty standard. As long as we have the con < 0 check to catch evil
> userspace.
>
> There's still the switch from op to int for con_font_copy, but I think
> that's better done as part of the larger cleanup we already discussed. And
> then maybe also include patch 1 from this series in that rework.
I see. I think at the moment there's not much we can do for
con_font_get/set/default(). _get() and _default() use *op, and _set()
uses all except one field of *op. Maybe we can change the type of *op
from console_font_op to font_desc, after cleaning up everything else?
Peilin
next prev parent reply other threads:[~2020-11-02 11:13 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-31 7:24 [PATCH 1/2] console: Remove dummy con_font_op() callback implementations Peilin Ye
2020-10-31 7:27 ` [PATCH 2/2] fbcon: Prevent global-out-of-bounds read in fbcon_copy_font() Peilin Ye
2020-11-02 9:36 ` [PATCH v2 1/2] console: Remove dummy con_font_op() callback implementations Peilin Ye
2020-11-02 9:37 ` [PATCH v2 2/2] tty/vt: Avoid passing struct console_font_op to con_font_copy() Peilin Ye
2020-11-02 10:10 ` Daniel Vetter
2020-11-02 11:12 ` Peilin Ye [this message]
2020-11-02 11:30 ` Daniel Vetter
2020-11-02 9:47 ` [PATCH v2 1/2] console: Remove dummy con_font_op() callback implementations Jiri Slaby
2020-11-02 10:13 ` Daniel Vetter
2020-11-02 10:52 ` Peilin Ye
2020-11-06 10:50 ` [PATCH " Greg Kroah-Hartman
2020-11-10 12:49 ` Daniel Vetter
2020-11-10 13:24 ` Peilin Ye
2020-11-10 13:46 ` Daniel Vetter
2020-11-10 13:55 ` Peilin Ye
2020-11-10 14:56 ` Greg Kroah-Hartman
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