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Re: kern/49707: i386 i915drmkms on 82845G/GL panic with Xorg intel driver



The following reply was made to PR kern/49707; it has been noted by GNATS.

From: "John D. Baker" <jdbaker%mylinuxisp.com@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc: 
Subject: Re: kern/49707: i386 i915drmkms on 82845G/GL panic with Xorg intel
 driver
Date: Sun, 31 Jan 2016 02:47:11 -0600 (CST)

 I had occasion to try modular/pkgsrc Xorg.  It behaves the same: Bus error.
 Although I built the server with the "debug" option, it doesn't sseem
 to have any debugging symbols.  The backtrace from 'gdb' seems to be
 otherwise consistent with the "native" Xorg.
 
 # gdb X
 GNU gdb (GDB) 7.9.1
 Copyright (C) 2015 Free Software Foundation, Inc.
 License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
 This is free software: you are free to change and redistribute it.
 There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
 and "show warranty" for details.
 This GDB was configured as "i486--netbsdelf".
 Type "show configuration" for configuration details.
 For bug reporting instructions, please see:
 <http://www.gnu.org/software/gdb/bugs/>.
 Find the GDB manual and other documentation resources online at:
 <http://www.gnu.org/software/gdb/documentation/>.
 For help, type "help".
 Type "apropos word" to search for commands related to "word"...
 Reading symbols from X...(no debugging symbols found)...done.
 (gdb) run
 Starting program: /usr/pkg/bin/X 
 InitConnectionLimits: MaxClients = 256
 
 X.Org X Server 1.17.4
 Release Date: 2015-10-28
 X Protocol Version 11, Revision 0
 Build Operating System: NetBSD-7.99.26-i386 The NetBSD Foundation
 Current Operating System: NetBSD gx260a 7.99.26 NetBSD 7.99.26 (GX260A) #28: Sat Jan 30 16:35:34 CST 2016  sysop%x3650.technoskunk.fur@localhost:/r0/build/nbsd-tst/obj/i386/sys/arch/i386/compile/GX260A i386
 Build Date: 30 January 2016  10:50:27PM
  
 Current version of pixman: 0.32.8
         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: Sun Jan 31 02:29:15 2016
 Converted `%D/X11/%X' to `/usr/pkg/share/X11/xorg.conf.d'
 Converted `/etc/X11/%X' to `/etc/X11/xorg.conf.d'
 Converted `%C/X11/%X' to `/usr/pkg/etc/X11/xorg.conf.d'
 Converted `/etc/X11/%X' to `/etc/X11/xorg.conf'
 (==) Using config file: "/etc/X11/xorg.conf"
 (==) Using system config directory "/usr/pkg/share/X11/xorg.conf.d"
 LoaderOpen(/usr/pkg/lib/xorg/modules/extensions/libglx.so)
 LoaderOpen(/usr/pkg/lib/xorg/modules/drivers/intel_drv.so)
 LoaderOpen(/usr/pkg/lib/xorg/modules/drivers/fbdev_drv.so)
 LoaderOpen(/usr/pkg/lib/xorg/modules/drivers/vesa_drv.so)
 LoaderOpen(/usr/pkg/lib/xorg/modules/input/mouse_drv.so)
 LoaderOpen(/usr/pkg/lib/xorg/modules/input/kbd_drv.so)
 intel: card at 0:2:0 is claimed by a Device section
 LoaderOpen(/usr/pkg/lib/xorg/modules/libfbdevhw.so)
 xf86RegisterRootWindowProperty(0, 69, 19, 32, 1, 0xbb70b108)
 new property filled
 creating xf86RegisteredPropertiesTable[] size 1
 xf86RegisteredPropertiesTable 0xbb713f40
 xf86RegisteredPropertiesTable[0] 0x0
 xf86RegisterRootWindowProperty succeeded
 xf86RegisterRootWindowProperty(0, 70, 19, 32, 1, 0x824e778)
 new property filled
 xf86RegisteredPropertiesTable 0xbb713f40
 xf86RegisteredPropertiesTable[0] 0xbb713f20
 xf86RegisterRootWindowProperty succeeded
 InitOutput - xf86Screens[0]->pScreen = 0xbb76c000
 xf86Screens[0]->pScreen->CreateWindow = 0xbb322620
 Sync Extension 3.1
 XFree86VidModeExtensionInit
 warning: Temporarily disabling breakpoints for unloaded shared library "/usr/pkg/lib/libLLVM/libLLVM-3.7.so"
 
 Program received signal SIGBUS, Bus error.
 [Switching to LWP 1]
 0xbb31a7b0 in __kgem_bo_make_scanout ()
    from /usr/pkg/lib/xorg/modules/drivers/intel_drv.so
 (gdb) bt
 #0  0xbb31a7b0 in __kgem_bo_make_scanout ()
    from /usr/pkg/lib/xorg/modules/drivers/intel_drv.so
 #1  0xbb31b6ea in kgem_create_2d ()
    from /usr/pkg/lib/xorg/modules/drivers/intel_drv.so
 #2  0xbb323d94 in sna_pixmap_alloc_gpu.isra ()
    from /usr/pkg/lib/xorg/modules/drivers/intel_drv.so
 #3  0xbb335537 in sna_pixmap_move_to_gpu ()
    from /usr/pkg/lib/xorg/modules/drivers/intel_drv.so
 #4  0xbb3661c1 in sna_create_screen_resources ()
    from /usr/pkg/lib/xorg/modules/drivers/intel_drv.so
 #5  0x080e4d3e in ?? ()
 #6  0x08079c29 in ?? ()
 #7  0x081d7a76 in ?? ()
 #8  0x08064da4 in _start ()
 (gdb) 
 
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