From: sashiko-bot@kernel.org
To: "Zizhi Wo" <wozizhi@huaweicloud.com>
Cc: linux-serial@vger.kernel.org
Subject: Re: [PATCH] vt: skip screen update for DEC alignment test on backgroup consoles
Date: Sat, 05 Sep 2026 06:58:43 +0000 [thread overview]
Message-ID: <20260905065844.7A0CC1F00A3D@smtp.kernel.org> (raw)
In-Reply-To: <20260905064337.3083103-1-wozizhi@huaweicloud.com>
> From: Zizhi Wo <wozizhi@huawei.com>
>
> [BUG]
> Recently, we encountered a KASAN warning as follows:
>
> BUG: KASAN: slab-out-of-bounds in fb_pad_aligned_buffer+0x11f/0x140
> Read of size 1 at addr ff1100015fd9f6a4 by task tty_fbcon_oob/1239
> CPU: 7 UID: 0 PID: 1239 Comm: tty_fbcon_oob Not tainted 7.3.0-rc1 #100 PREEMPT(full)
> Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.17.0-4.fc41 04/01/2014
> Call Trace:
> <TASK>
> ...
> kasan_report+0xf0/0x120
> fb_pad_aligned_buffer+0x11f/0x140
> ccw_putcs+0x86c/0xa80
> [ ... ]
> the con_should_update() check in the do_con_trol() like every other call
> site of do_update_region() (update_region(), invert_screen(), ...).
>
> Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
> Signed-off-by: Zizhi Wo <wozizhi@huawei.com>
Sashiko has reviewed this patch and found no issues. It looks great!
--
Sashiko AI review · https://sashiko.dev/#/patchset/20260905064337.3083103-1-wozizhi@huaweicloud.com?part=1
prev parent reply other threads:[~2026-09-05 6:58 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-05 6:43 [PATCH] vt: skip screen update for DEC alignment test on backgroup consoles Zizhi Wo
2026-09-05 6:58 ` sashiko-bot [this message]
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