linux-kernel - Re: [PATCH v2 3/7] kdb: Fix console handling when editing and tab-completing commands

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date: Mon, 22 Apr 2024 16:52:12 -0700
From: Doug Anderson <dianders@...omium.org>
To: Daniel Thompson <daniel.thompson@...aro.org>
Cc: Jason Wessel <jason.wessel@...driver.com>, kgdb-bugreport@...ts.sourceforge.net, 
	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Subject: Re: [PATCH v2 3/7] kdb: Fix console handling when editing and
 tab-completing commands

Hi,

On Mon, Apr 22, 2024 at 9:37 AM Daniel Thompson
<daniel.thompson@...aro.org> wrote:
>
> Currently, if the cursor position is not at the end of the command buffer
> and the user uses the Tab-complete functions, then the console does not
> leave the cursor in the correct position.
>
> For example consider the following buffer with the cursor positioned
> at the ^:
>
> md kdb_pro 10
>           ^
>
> Pressing tab should result in:
>
> md kdb_prompt_str 10
>                  ^
>
> However this does not happen. Instead the cursor is placed at the end
> (after then 10) and further cursor movement redraws incorrectly. The
> same problem exists when we double-Tab but in a different part of the
> code.
>
> Fix this by sending a carriage return and then redisplaying the text to
> the left of the cursor.
>
> Cc: stable@...r.kernel.org
> Signed-off-by: Daniel Thompson <daniel.thompson@...aro.org>
> ---
>  kernel/debug/kdb/kdb_io.c | 5 +++++
>  1 file changed, 5 insertions(+)

Reviewed-by: Douglas Anderson <dianders@...omium.org>