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Old 08-26-2012, 10:17 PM
Samuel Thibault
Default Bug#685953: linux: crash on speakup goto operation

Package: linux
Version: 3.2.23-1
Severity: important
Tags: patch


Speakup currently has a bug which can lead to a mere crash when using
its goto function:

You can reproduce the bug by pressing numpad_insert, numpad_asterisk.
As soon as you start typing a position, for instance 23y,
the system will crash.

The attached patch is the upstream fix for it. It'd be good to have it
for wheezy.


-- System Information:
Debian Release: wheezy/sid
APT prefers testing
APT policy: (990, 'testing'), (500, 'unstable'), (500, 'stable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 3.0.4 (SMP w/8 CPU cores)
Locale: LANG=fr_FR.UTF-8, LC_CTYPE=fr_FR.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash

Samuel Thibault <samuel.thibault@ens-lyon.org>
Les roots ne sont plus ce qu'ils étaient...Maintenant il sont dioxinés,
c'est de la m... ! Avant on les élevaient avec du bon unix mais ça été
remplacé par des farines industrielles nouvelles technologies (NT).
-+- JdK in NPC : Exigez un root élevé sous la mère ! -+-
commit 4ea418b8b2fa8a70d0fcc8231b65e67b3a72984b
Author: Christopher Brannon <chris@the-brannons.com>
Date: Sat Jun 16 16:55:20 2012 -0500

Staging: speakup: fix an improperly-declared variable.

A local static variable was declared as a pointer to a string
constant. We're assigning to the underlying memory, so it
needs to be an array instead.

Signed-off-by: Christopher Brannon <chris@the-brannons.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/speakup/main.c b/drivers/staging/speakup/main.c
index 92b34e2..40e2488 100644
--- a/drivers/staging/speakup/main.c
+++ b/drivers/staging/speakup/main.c
@@ -1854,7 +1854,7 @@ static void speakup_bits(struct vc_data *vc)

static int handle_goto(struct vc_data *vc, u_char type, u_char ch, u_short key)
- static u_char *goto_buf = "";
+ static u_char goto_buf[8];
static int num;
int maxlen, go_pos;
char *cp;

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