Re: [Bug-xnee] Fwd: Buffer overflow error while replaying recorded file

[Henrik Sandklef]

Hi and thanks for your report,

 ... before I start dive into the details can you send over the output
when executing cnee with the verbose flag switched on "--verbose"

  cnee --replay --verbose -e /tmp/gnumeric2.err -f ./gnumeric2.xnl

/hesa

Kp wrote:
> Hi,
> 
> I'm facing a reproducible buffer overflow error while replaying
> events recorded using xnee.
> 
> The recording takes place fine; there are no errors, and cnee exits
> cheerfully. Then, when I attempt to replay the file, a few events take
> place, and then there is a buffer overflow.
> 
> I appear to have noticed that the buffer overflow occurs only after
> any event that launches a new program. For example, if I move the
> mouse around and navigate my KDE main menu, those events are replayed
> fine. Cnee dies only after the an event that launches a new
> application.
> 
> Another odd side-effect I'm noticing is that my keyboard repeat stops
> working after cnee dies as seen below. Holding down any key for
> eternity produces just one keystroke. Oddly, though, if I'm running
> vmware, and the keyboard is captured by a guest virtual machine,
> keyboard repeats work fine within that virtual machine... - this seems
> to indicate that the hardware etc. is fine, but something is stopping
> X from receiving multiple keypresses when a key is held down...?
> 
> Please find below the command output when I run cnee to replay the
> events. I have attached the gnumeric2.xnl file to this mail, in case
> it helps.
> 
> Would be really grateful if someone could give me some answers. I've
> tried the same operation on a Fedora Core 4 machine as well as a newly
> installed CentOS 4 machine, with identical results. The Fedora machine
> runs KDE, while the CentOS runs Gnome. No difference in operation
> visible (I guess it wouldn't make a difference anyway... but too much
> info can't hurt :))
> 
> Thanks a lot, in advance!
> 
> =================================================================
> COMMAND OUTPUT BEGINS
> =================================================================
> 
> address@hidden ~/Desktop $ cnee --replay -f ./gnumeric2.xnl
> *** buffer overflow detected ***: cnee terminated
> ======= Backtrace: =========
> /lib/libc.so.6(__chk_fail+0x41)[0xb9bbc5]
> /lib/libc.so.6[0xb9b452]
> cnee[0x8059d9f]
> cnee[0x8051d42]
> cnee(vfprintf+0x318a)[0x804c98e]
> cnee(vfprintf+0x2315)[0x804bb19]
> /lib/libc.so.6(__libc_start_main+0xdf)[0xad2d7f]
> cnee(vfprintf+0x3ad)[0x8049bb1]
> ======= Memory map: ========
> 009cd000-009d6000 r-xp 00000000 fd:00 4355412
> /lib/libgcc_s-4.0.2-20051126.so.1
> 009d6000-009d7000 rwxp 00009000 fd:00 4355412
> /lib/libgcc_s-4.0.2-20051126.so.1
> 00a9f000-00aa0000 r-xp 00a9f000 00:00 0          [vdso]
> 00aa0000-00aba000 r-xp 00000000 fd:00 4353899    /lib/ld-2.3.6.so
> 00aba000-00abb000 r-xp 00019000 fd:00 4353899    /lib/ld-2.3.6.so
> 00abb000-00abc000 rwxp 0001a000 fd:00 4353899    /lib/ld-2.3.6.so
> 00abe000-00be1000 r-xp 00000000 fd:00 4353901    /lib/libc-2.3.6.so
> 00be1000-00be3000 r-xp 00122000 fd:00 4353901    /lib/libc-2.3.6.so
> 00be3000-00be5000 rwxp 00124000 fd:00 4353901    /lib/libc-2.3.6.so
> 00be5000-00be7000 rwxp 00be5000 00:00 0
> 00c10000-00c12000 r-xp 00000000 fd:00 4353909    /lib/libdl-2.3.6.so
> 00c12000-00c13000 r-xp 00001000 fd:00 4353909    /lib/libdl-2.3.6.so
> 00c13000-00c14000 rwxp 00002000 fd:00 4353909    /lib/libdl-2.3.6.so
> 00c2b000-00cfb000 r-xp 00000000 fd:00 9249054   
> /usr/X11R6/lib/libX11.so.6.2
> 00cfb000-00cff000 rwxp 000cf000 fd:00 9249054   
> /usr/X11R6/lib/libX11.so.6.2
> 00d01000-00d0f000 r-xp 00000000 fd:00 9249056   
> /usr/X11R6/lib/libXext.so.6.4
> 00d0f000-00d10000 rwxp 0000e000 fd:00 9249056   
> /usr/X11R6/lib/libXext.so.6.4
> 07fb7000-07fbc000 r-xp 00000000 fd:00 9235748   
> /usr/X11R6/lib/libXtst.so.6.1
> 07fbc000-07fbd000 rwxp 00004000 fd:00 9235748   
> /usr/X11R6/lib/libXtst.so.6.1
> 08047000-0806c000 r-xp 00000000 fd:00 9242820    /usr/bin/cnee
> 0806c000-08076000 rw-p 00024000 fd:00 9242820    /usr/bin/cnee
> 08076000-08077000 rw-p 08076000 00:00 0
> 080fb000-0811d000 rw-p 080fb000 00:00 0          [heap]
> b7f59000-b7f5b000 rw-p b7f59000 00:00 0
> b7f7b000-b7f7d000 rw-p b7f7b000 00:00 0
> bff66000-bff7c000 rw-p bff66000 00:00 0          [stack]
> Aborted
> 
> 
> ------------------------------------------------------------------------
> 
> _______________________________________________
> Bug-xnee mailing list
> address@hidden
> http://lists.gnu.org/mailman/listinfo/bug-xnee