Bug#240809: xserver 4.3.0 SIGSEGV with exec-shield enabled kernel
On Tue, Mar 30, 2004 at 04:19:10AM -0500, Branden Robinson wrote:
> Date: Tue, 30 Mar 2004 04:19:10 -0500
> From: Branden Robinson <branden@debian.org>
> User-Agent: Mutt/1.5.5.1+cvs20040105i
> To: 240809-submitter@bugs.debian.org, control@bugs.debian.org
> Reply-To: Branden Robinson <branden@debian.org>,
> 240809-quiet@bugs.debian.org
> Subject: Bug#240809: xserver 4.3.0 SIGSEGV with exec-shield enabled kernel
>
> tag 240809 + moreinfo
> severity 240809 important
> thanks
>
> On Mon, Mar 29, 2004 at 03:05:33PM +0300, Alexei Chetroi wrote:
> > Package: xserver-xfree86
> > Version: 4.3.0-7
> >
> > Hi,
> >
> > xserver version 4.3.0-7 (testing distribution) crashes, when launched
> > on a kernel with exec-shield (by Ingo Molnar) patch applied. Always can
> > reproduce that. Previos version of X server from testing (4.2.1) didn't
> > have any problem with exec-shield. Here's output:
>
> Does XFree86-debug from the xserver-xfree86-dbg package SEGV as well?
No, XFree86-debug doesn't SEGV (I had to change "nvidia" driver to "nv"
in /etc/X11/XF86config-4). XFree86 fails, even with "nv" driver.
Here's output:
Script started on Tue 30 Mar 2004 17:27:20 EEST
lexa:/etc/X11# ls -l /etc/X11/X
lrwxrwxrwx 1 root root 26 2004-03-30 17:26 /etc/X11/X -> /usr/bin/X11/XFree86-debug
lexa:/etc/X11# cat /proc/sys/kernel/exec-shield
2
lexa:/etc/X11# /etc/X11/X -verbose &>zz
... [stoped X server by ctrl-alt-backspace] ...
lexa:/etc/X11# tail -30 zz
Screen to screen bit blits
Solid filled rectangles
8x8 mono pattern filled rectangles
Indirect CPU to Screen color expansion
Solid Lines
Offscreen Pixmaps
Setting up tile and stipple cache:
32 128x128 slots
32 256x256 slots
16 512x512 slots
(==) NV(0): Backing store disabled
(==) NV(0): Silken mouse enabled
(**) NV(0): DPMS enabled
(WW) NV(0): Option "DRI" is not used
(WW) NV(0): Option "Overclockmem" is not used
(WW) NV(0): Option "NvAGP" is not used
(WW) NV(0): Option "NoLogo" is not used
(WW) NV(0): Option "CursorShadow" is not used
(WW) NV(0): Option "RenderAccel" is not used
(WW) NV(0): Option "ConnectedMonitor" is not used
(==) RandR enabled
(II) Keyboard "Generic Keyboard" handled by legacy driver
(**) Configured Mouse: Protocol: "ImPS/2"
(**) Configured Mouse: Core Pointer
(**) Configured Mouse: Emulate3Buttons, Emulate3Timeout: 50
(**) Configured Mouse: ZAxisMapping: buttons 4 and 5
(**) Configured Mouse: Buttons: 5
(II) XINPUT: Adding extended input device "Configured Mouse" (type: MOUSE)
(II) Configured Mouse: ps2EnableDataReporting: succeeded
Could not init font path element unix/:7100, removing from list!
lexa:/etc/X11#
Script done on Tue 30 Mar 2004 17:28:27 EEST
--
Alexei Chetroi
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