From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: Yangxi Xiang <xyangxi5@gmail.com>
Cc: linux-kernel@vger.kernel.org, Jiri Slaby <jirislaby@kernel.org>,
Johan Hovold <johan@kernel.org>,
Igor Matheus Andrade Torrente <igormtorrente@gmail.com>,
Christian Borntraeger <borntraeger@linux.ibm.com>,
nick black <dankamongmen@gmail.com>
Subject: Re: [PATCH] vt: fix memory overlapping when deleting chars in the buffer
Date: Mon, 27 Jun 2022 14:29:57 +0200 [thread overview]
Message-ID: <YrmixTj6aF3Pwq0I@kroah.com> (raw)
In-Reply-To: <20220627114016.11114-1-xyangxi5@gmail.com>
On Mon, Jun 27, 2022 at 07:40:16PM +0800, Yangxi Xiang wrote:
> > And what commit id does this fix, or has it always been broken?
>
> It fixes the commit 81732c3 (tty vt: Fix line garbage in virtual
> console on command line edition). The line buffer is not always
> broken, because the memcpy utilized the hardware acceleration, whose
> result is not deterministic. I fix this issue by replacing the
> scr_memcpyw with scr_memmovew used in insert_char, and preserving the
> memcpy optimization when the buffers are not overlapping.
Great, can you please resend the patch with that information all in it,
and the proper Fixes: line tag added?
thanks,
greg k-h
next prev parent reply other threads:[~2022-06-27 12:30 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-06-27 10:29 [PATCH] vt: fix memory overlapping when deleting chars in the buffer Yangxi Xiang
2022-06-27 10:47 ` Greg Kroah-Hartman
2022-06-27 11:04 ` Yangxi Xiang
2022-06-27 11:07 ` Greg Kroah-Hartman
2022-06-27 11:40 ` Yangxi Xiang
2022-06-27 12:29 ` Greg Kroah-Hartman [this message]
-- strict thread matches above, loose matches on Subject: below --
2022-06-28 8:08 [PATCH v2] " Jiri Slaby
2022-06-28 8:27 ` [PATCH] " Yangxi Xiang
2022-06-28 8:38 ` Jiri Slaby
2022-06-28 8:59 ` Yangxi Xiang
2022-06-28 9:11 ` Greg Kroah-Hartman
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