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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" <>
Subject: Re: kern/49707: i386 i915drmkms on 82845G/GL panic with Xorg intel
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
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 License GPLv3+: GNU GPL version 3 or later <>
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 and "show warranty" for details.
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 For bug reporting instructions, please see:
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 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
         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"
 intel: card at 0:2:0 is claimed by a Device section
 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
 warning: Temporarily disabling breakpoints for unloaded shared library "/usr/pkg/lib/libLLVM/"
 Program received signal SIGBUS, Bus error.
 [Switching to LWP 1]
 0xbb31a7b0 in __kgem_bo_make_scanout ()
    from /usr/pkg/lib/xorg/modules/drivers/
 (gdb) bt
 #0  0xbb31a7b0 in __kgem_bo_make_scanout ()
    from /usr/pkg/lib/xorg/modules/drivers/
 #1  0xbb31b6ea in kgem_create_2d ()
    from /usr/pkg/lib/xorg/modules/drivers/
 #2  0xbb323d94 in sna_pixmap_alloc_gpu.isra ()
    from /usr/pkg/lib/xorg/modules/drivers/
 #3  0xbb335537 in sna_pixmap_move_to_gpu ()
    from /usr/pkg/lib/xorg/modules/drivers/
 #4  0xbb3661c1 in sna_create_screen_resources ()
    from /usr/pkg/lib/xorg/modules/drivers/
 #5  0x080e4d3e in ?? ()
 #6  0x08079c29 in ?? ()
 #7  0x081d7a76 in ?? ()
 #8  0x08064da4 in _start ()
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