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

["John D. Baker" <jdbaker%mylinuxisp.com@localhost>]

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: Tue, 13 Oct 2015 14:40:15 -0500 (CDT)

 On Tue, 13 Oct 2015, Taylor R Campbell wrote:
 
 >  Any chance you could run X with debugging symbols?
 
 The non-update build did the trick.  'gdb' session as follows:
 
 [...]
 Reading symbols from X...Reading symbols from /usr/libdata/debug//usr/X11R7/bin/Xorg.debug...done.
 done.
 (gdb) run
 Starting program: /usr/X11R7/bin/X 
 
 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 gx260a 7.99.21 NetBSD 7.99.21 (GX260A) #31: Tue Oct 13 11:44:39 CDT 2015  sysop%skuld.technoskunk.fur@localhost:/d0/build/current/obj/i386/sys/arch/i386/compile/GX260A 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: Tue Oct 13 14:32:43 2015
 (==) Using config file: "/etc/X11/xorg.conf"
 
 Program received signal SIGBUS, Bus error.
 [Switching to LWP 1]
 0xbb297ab0 in __kgem_bo_make_scanout (kgem=kgem@entry=0xbb353000, 
     bo=bo@entry=0xba927470, width=width@entry=1280, height=height@entry=1024)
     at /x/current/src/../xsrc/external/mit/xf86-video-intel/dist/src/sna/kgem.c:4799
 4799                            *(uint32_t *)bo->map__gtt = 0;
 (gdb) bt
 #0  0xbb297ab0 in __kgem_bo_make_scanout (kgem=kgem@entry=0xbb353000, 
     bo=bo@entry=0xba927470, width=width@entry=1280, height=height@entry=1024)
     at /x/current/src/../xsrc/external/mit/xf86-video-intel/dist/src/sna/kgem.c:4799
 #1  0xbb2989ea in kgem_create_2d (kgem=kgem@entry=0xbb353000, width=1280, 
     height=1024, bpp=32, tiling=1, flags=530, flags@entry=16)
     at /x/current/src/../xsrc/external/mit/xf86-video-intel/dist/src/sna/kgem.c:5448
 #2  0xbb20d7c3 in sna_pixmap_alloc_gpu (sna=sna@entry=0xbb353000, 
     pixmap=pixmap@entry=0xbb311560, flags=16, priv=<optimized out>)
     at /x/current/src/../xsrc/external/mit/xf86-video-intel/dist/src/sna/sna_accel.c:1636
 #3  0xbb21ebb7 in sna_pixmap_move_to_gpu (pixmap=pixmap@entry=0xbb311560, 
     flags=flags@entry=322)
     at /x/current/src/../xsrc/external/mit/xf86-video-intel/dist/src/sna/sna_accel.c:4211
 #4  0xbb1ec6a1 in sna_pixmap_force_to_gpu (flags=258, pixmap=0xbb311560)
     at /x/current/src/../xsrc/external/mit/xf86-video-intel/dist/src/sna/sna.h:722
 #5  sna_create_screen_resources (screen=0xbb316240)
     at /x/current/src/../xsrc/external/mit/xf86-video-intel/dist/src/sna/sna_driver.c:256
 #6  0x080ddaad in ?? ()
 #7  0x081ec7d4 in main ()
 (gdb) 
 
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