Bugtraq: Re: Kvt bug

[D.Yu.Bolkhovityanov () INP NSK SU (Dmitry Yu. Bolkhovityanov)]

On 30 Sep 99 at 11:56, pioppo () FERRARA LINUX IT wrote:

> Wed, 29 Sep 1999, in a message titled "Kvt bug", Sebastian Wain wrote:
>
> > In the xterm there is a feature to change the title of the window
> > You can change the title of the window sending one of the escape codes of the
> > xterm.
> > (linux: man console_codes)
> > By Example:
> > ESC]2;This is my Xterm^G
> > This escape code changes the xterm's title to "This is my Xterm"
> > Obviously You can do the same using the kvt (Kde Virtual Terminal).
> > But the kvt has a buffer overflow. If the size of the new title of the
> > window is big enough then the kvt will do a core dump.
> xterm too (version 3.3.2.3) coredumps...
> I tried this with echo -e "\033]2;(60e+06 times 'a')\007"
    Tried the same with xterm 3.3.3 on i586, 64M RAM, 128M swap, continuously
increasing the number of 'a's (perl -e 'print "a" x 60000', 600000,
600000...).  But instead of xterm crash got Fvwm2 hangup after 6e6 "a"s.
I.e. everything else works -- I ould even press the "play" button in x11amp
with mouse, except Fvwm2.

    "strace -p <fvwm2pid>" shows that Fvwm2 waits infinitely on select().

    The only choice was to kill the window manager.

    All progs are from stock RedHat 6.0/i386 -- "Fvwm Version 2.2 compiled on
Apr  9 1999 at 16:15:38".
       ___________________________________________________________________
       Dmitry Yu. Bolkhovityanov  |  Novosibirsk, RUSSIA
       phone (383-2)-39-49-56     |  The Budker Institute of Nuclear Physics
                                  |  Lab. 5-13