xsrc/50093: 7.0_RC1 Xorg server gets SIGSEGV on exit

[Izumi Tsutsui]

>Number: 50093
>Category: xsrc
>Synopsis: 7.0_RC1 Xorg server gets SIGSEGV on exit
>Confidential: no
>Severity: non-critical
>Priority: medium
>Responsible: xsrc-manager
>State: open
>Class: sw-bug
>Submitter-Id: net
>Arrival-Date: Sun Jul 26 16:45:00 +0000 2015
>Originator: Izumi Tsutsui
>Release: NetBSD 7.0_RC1
>Organization:
>Environment:
System: NetBSD mirage 7.0_RC1 NetBSD 7.0_RC1 (GENERIC.201506190427Z) i386
Architecture: i386
Machine: i386 on VirtualBox 4.3.30, but also occurs on QEMU 2.3.0 and other real machines
>Description:
NetBSD/i386 7.0_RC1 Xorg server gets SIGSEGV on exit as following:

---
# xinit

X.Org X Server 1.10.6
Release Date: 2011-07-08
X Protocol Version 11, Revision 0
Build Operating System: NetBSD/i386 -
Current Operating System: NetBSD teokure 7.0_RC1 NetBSD 7.0_RC1 (GENERIC.201506190427Z) i386
Build Date: 01 August 2011 01:01:00AM

Current version of pixman: 0.32.6
Before reporting problems, check http://wiki.X.Org
to make sure that you have the latest version.
Markers: (--) probed, (**) from config file, (==) default setting,
(++) from command line, (!!) notice, (II) informational,
(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
(==) Log file: "/var/log/Xorg.0.log", Time: Mon Jul 27 01:15:16 2015
(==) Using default built-in configuration (21 lines)
(EE) Failed to load module "vboxvideo" (module does not exist, 0)

mtrr set failed: Operation not supported by device
The XKEYBOARD keymap compiler (xkbcomp) reports:
> Error: Couldn't lookup keysym
> Symbol interpretation ignored
> Error: Couldn't lookup keysym
> Symbol interpretation ignored
Errors from xkbcomp are not fatal to the X server
xinit: connection to X server lost

waiting for X server to shut down Segmentation fault at address 0xb9f9b7d9

Fatal server error:
Caught signal 11 (Segmentation fault). Server aborting


Please consult the The X.Org Foundation support
at http://wiki.X.Org
for help.
Please also check the log file at "/var/log/Xorg.0.log" for additional information.
---

/var/log/Xorg.0.log has no particular information on the exit:
---
:
[219154.378] (II) UnloadModule: "mouse"
[219154.728] (II) Unloading mouse
[219155.468] (II) UnloadModule: "kbd"
[219155.593] (II) Unloading kbd
---

The address 0xb9f9b7d9 looks inside of some Xorg server module, and
the address depends on the video hardware. (due to loaded drivers?)

>How-To-Repeat:
- install NetBSD/i386 7.0_RC1
(especially on QEMU or VirtualBox, which use VESA driver, to reproduce)
- start X by xinit
- exit in the default xterm to quit Xserver

>Fix:
No idea.


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[David H. Gutteridge]

The following reply was made to PR xsrc/50093; it has been noted by GNATS.

From: "David H. Gutteridge" <dhgutt...@sympatico.ca>
To: gnats...@netbsd.org
Cc:
Subject: Re: xsrc/50093: 7.0_RC1 Xorg server gets SIGSEGV on exit
Date: Mon, 27 Jul 2015 18:11:54 -0400

On Sun, 26 Jul 2015, at 16:45:01 +0000 (UTC), Izumi Tsutsui wrote:
>>How-To-Repeat:
>- install NetBSD/i386 7.0_RC1
> (especially on QEMU or VirtualBox, which use VESA driver, to reproduce)
>- start X by xinit
>- exit in the default xterm to quit Xserver

I also see this with NetBSD/amd64 current running in VMWare Fusion
(using the X.org vmware drivers) as well as with NetBSD/i386 7.0_RC1
running on an LG X110 netbook.

Dave

[matthew green]

this seems like a duplicate of PR#49553 we haven't figured out
what is happening yet.


.mrg.

[matthew green]

The following reply was made to PR xsrc/50093; it has been noted by GNATS.