(gdb) bt full
#0  0x00007f293d54b545 in __GI_raise (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:56
        resultvar = 0
        pid = 21617
        selftid = 21617
#1  0x00007f293d54c9c8 in __GI_abort () at abort.c:90
        save_stage = 2
        act = {__sigaction_handler = {sa_handler = 0x7fffc00c2848, sa_sigaction = 0x7fffc00c2848}, sa_mask = {__val = {139815100595965, 139815053220104, 514, 139815099160272, 139815099326481, 0, 2, 4294967296, 4
, 140736415402848, 0, 0, 0,
              139815100595477, 139814982701056, 139815100611232}}, sa_flags = 982840856, sa_restorer = 0x7f293a952a60 <__PRETTY_FUNCTION__.23914>}
        sigs = {__val = {32, 0 <repeats 15 times>}}
#2  0x00007f293d5445f2 in __assert_fail_base (fmt=0x7f293d67faa0 "%s%s%s:%u: %s%sAssertion `%s' failed.\n%n", assertion=assertion@entry=0x7f293a94f618 "pixmap->devPrivate.ptr == ((void*)((uintptr_t)(priv->ptr) &
 ~1))",
    file=file@entry=0x7f293a94d908 "/var/tmp/portage/x11-drivers/xf86-video-intel-9999/work/xf86-video-intel-9999/src/sna/sna.h", line=line@entry=514, function=function@entry=0x7f293a952a60 <__PRETTY_FUNCTION__.
23914> "sna_pixmap_unmap")
    at assert.c:92
        str = 0x258f9f0 "\200$2\002"
        total = 4096
#3  0x00007f293d5446a2 in __GI___assert_fail (assertion=assertion@entry=0x7f293a94f618 "pixmap->devPrivate.ptr == ((void*)((uintptr_t)(priv->ptr) & ~1))",
    file=file@entry=0x7f293a94d908 "/var/tmp/portage/x11-drivers/xf86-video-intel-9999/work/xf86-video-intel-9999/src/sna/sna.h", line=line@entry=514, function=function@entry=0x7f293a952a60 <__PRETTY_FUNCTION__.
23914> "sna_pixmap_unmap")
    at assert.c:101
No locals.
#4  0x00007f293a84d99e in sna_pixmap_unmap (pixmap=0x16b6cf0, pixmap=0x16b6cf0, priv=0x16b6c70) at /var/tmp/portage/x11-drivers/xf86-video-intel-9999/work/xf86-video-intel-9999/src/sna/sna.h:514
No locals.
#5  sna_pixmap_change_tiling (pixmap=pixmap@entry=0x16b6cf0, tiling=<optimized out>) at /var/tmp/portage/x11-drivers/xf86-video-intel-9999/work/xf86-video-intel-9999/src/sna/sna_accel.c:676
        bo = 0x260e640
        box = {x1 = 0, y1 = 0, x2 = 48, y2 = 48}
        __PRETTY_FUNCTION__ = "sna_pixmap_change_tiling"
#6  0x00007f293a92a8e3 in sna_pixmap_set_dri (pixmap=0x16b6cf0, sna=0x7f293f416000) at /var/tmp/portage/x11-drivers/xf86-video-intel-9999/work/xf86-video-intel-9999/src/sna/sna_dri.c:164
        priv = 0x16b6c70
        tiling = <optimized out>
#7  sna_dri_create_buffer (draw=<optimized out>, attachment=0, format=32) at /var/tmp/portage/x11-drivers/xf86-video-intel-9999/work/xf86-video-intel-9999/src/sna/sna_dri.c:259
        buffer = <optimized out>
        pixmap = <optimized out>
        bo = <optimized out>
        flags = 0
        size = <optimized out>
        bpp = <optimized out>
        __PRETTY_FUNCTION__ = "sna_dri_create_buffer"
#8  0x0000000000551313 in create_buffer (format=32, attachment=0, pDraw=0x16b6cf0) at /var/tmp/portage/x11-base/xorg-server-1.15.0/work/xorg-server-1.15.0/hw/xfree86/dri2/dri2.c:433
        pPriv = <optimized out>
        ds = <optimized out>
        buffer = <optimized out>
#9  allocate_or_reuse_buffer (pDraw=pDraw@entry=0x16b6cf0, pPriv=pPriv@entry=0x16b8900, attachment=attachment@entry=0, format=format@entry=32, dimensions_match=dimensions_match@entry=1, buffer=buffer@entry=0x24a
8708, ds=<optimized out>)
    at /var/tmp/portage/x11-base/xorg-server-1.15.0/work/xorg-server-1.15.0/hw/xfree86/dri2/dri2.c:480
No locals.
#10 0x0000000000552211 in do_get_buffers (pDraw=0x16b6cf0, width=width@entry=0x7fffc00c0ea8, height=height@entry=0x7fffc00c0eb0, attachments=0x24233d4, attachments@entry=0x24233cc, count=1, out_count=out_count@e
ntry=0x7fffc00c0eb8,
    has_format=has_format@entry=1) at /var/tmp/portage/x11-base/xorg-server-1.15.0/work/xorg-server-1.15.0/hw/xfree86/dri2/dri2.c:591
        pPriv = 0x16b8900
        buffers = 0x24a8700
        need_real_front = 1
        need_fake_front = 0
        have_fake_front = 0
        front_format = 32
        dimensions_match = 1
        buffers_changed = 1
        i = 1
#11 0x0000000000552460 in DRI2GetBuffersWithFormat (pDraw=<optimized out>, width=width@entry=0x7fffc00c0ea8, height=height@entry=0x7fffc00c0eb0, attachments=attachments@entry=0x24233cc, count=<optimized out>,
    out_count=out_count@entry=0x7fffc00c0eb8) at /var/tmp/portage/x11-base/xorg-server-1.15.0/work/xorg-server-1.15.0/hw/xfree86/dri2/dri2.c:673
No locals.
#12 0x0000000000553e40 in ProcDRI2GetBuffersWithFormat (client=0x1556a00) at /var/tmp/portage/x11-base/xorg-server-1.15.0/work/xorg-server-1.15.0/hw/xfree86/dri2/dri2ext.c:306
        buffers = <optimized out>
        status = <optimized out>
        count = 5112360
        stuff = 0x24233c0
        pDrawable = 0x16b6cf0
        width = 22
        height = 0
        attachments = 0x24233cc
#13 ProcDRI2Dispatch (client=0x1556a00) at /var/tmp/portage/x11-base/xorg-server-1.15.0/work/xorg-server-1.15.0/hw/xfree86/dri2/dri2ext.c:608
        stuff = 0x24233c0
#14 0x00000000004358ae in Dispatch () at /var/tmp/portage/x11-base/xorg-server-1.15.0/work/xorg-server-1.15.0/dix/dispatch.c:433
        clientReady = 0x14da2a0
        result = <optimized out>
        client = 0x1556a00
        nready = 0
        icheck = 0x8134d0 <checkForInput>
        start_tick = 125
#15 0x00000000004396ca in dix_main (argc=10, argv=0x7fffc00c10c8, envp=<optimized out>) at /var/tmp/portage/x11-base/xorg-server-1.15.0/work/xorg-server-1.15.0/dix/main.c:294
        i = <optimized out>
        alwaysCheckForInput = {0, 1}
#16 0x00007f293d537bf5 in __libc_start_main (main=0x424e50 <main>, argc=10, ubp_av=0x7fffc00c10c8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffc00c10b8) at libc-start.c
:258  
        result = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, -1800343839172036298, 4345432, 140736415404224, 0, 0, 1800424766557288758, 1824413561620560182}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x58f4c0 <__
libc_csu_init>,
              0x7fffc00c10c8}, data = {prev = 0x0, cleanup = 0x0, canceltype = 5829824}}}
        not_first_call = <optimized out>
#17 0x0000000000424e81 in _start ()
No symbol table info available.
(gdb) up
#1  0x00007f293d54c9c8 in __GI_abort () at abort.c:90
90      abort.c: No such file or directory.
(gdb) up
#2  0x00007f293d5445f2 in __assert_fail_base (fmt=0x7f293d67faa0 "%s%s%s:%u: %s%sAssertion `%s' failed.\n%n", assertion=assertion@entry=0x7f293a94f618 "pixmap->devPrivate.ptr == ((void*)((uintptr_t)(priv->ptr) &
 ~1))",
    file=file@entry=0x7f293a94d908 "/var/tmp/portage/x11-drivers/xf86-video-intel-9999/work/xf86-video-intel-9999/src/sna/sna.h", line=line@entry=514, function=function@entry=0x7f293a952a60 <__PRETTY_FUNCTION__.
23914> "sna_pixmap_unmap")
    at assert.c:92
92      assert.c: No such file or directory.
(gdb) p *pixmap
No symbol "pixmap" in current context.
(gdb) p pixmap
No symbol "pixmap" in current context.
(gdb) up
#3  0x00007f293d5446a2 in __GI___assert_fail (assertion=assertion@entry=0x7f293a94f618 "pixmap->devPrivate.ptr == ((void*)((uintptr_t)(priv->ptr) & ~1))",
    file=file@entry=0x7f293a94d908 "/var/tmp/portage/x11-drivers/xf86-video-intel-9999/work/xf86-video-intel-9999/src/sna/sna.h", line=line@entry=514, function=function@entry=0x7f293a952a60 <__PRETTY_FUNCTION__.
23914> "sna_pixmap_unmap")
    at assert.c:101
101     in assert.c
(gdb) p *pixmap
No symbol "pixmap" in current context.
(gdb) p pixmap
No symbol "pixmap" in current context.
(gdb) up


#4  0x00007f293a84d99e in sna_pixmap_unmap (pixmap=0x16b6cf0, pixmap=0x16b6cf0, priv=0x16b6c70) at /var/tmp/portage/x11-drivers/xf86-video-intel-9999/work/xf86-video-intel-9999/src/sna/sna.h:514
514     /var/tmp/portage/x11-drivers/xf86-video-intel-9999/work/xf86-video-intel-9999/src/sna/sna.h: No such file or directory.
(gdb) p *pixmap
$1 = {drawable = {type = 1 '\001', class = 0 '\000', depth = 32 ' ', bitsPerPixel = 32 ' ', id = 0, x = 0, y = 0, width = 48, height = 48, pScreen = 0x12d0270, serialNumber = 484}, devPrivates = 0x16b6d38, refcnt = 3, devKind = 192, 
  devPrivate = {ptr = 0x7f293f501000, val = 139815132598272, uval = 139815132598272, fptr = 0x7f293f501000}, screen_x = 1794, screen_y = 1200, usage_hint = 0, master_pixmap = 0x1dd}
(gdb) p *priv
$2 = {pixmap = 0x16b6cf0, gpu_bo = 0x16b66d0, cpu_bo = 0x0, gpu_damage = 0x22ce191, cpu_damage = 0x0, cow = 0x0, ptr = 0x0, move_to_gpu = 0x0, move_to_gpu_data = 0x0, flush_list = {next = 0x16b6cb8, prev = 0x16b6cb8}, cow_list = {
    next = 0x0, prev = 0x0}, stride = 192, clear_color = 0, source_count = 4, pinned = 0 '\000', create = 11 '\v', mapped = 0 '\000', flush = 0 '\000', shm = 0 '\000', clear = 0 '\000', header = 1 '\001', cpu = 0 '\000'}
(gdb) p *priv->cpu_bo
Cannot access memory at address 0x0
(gdb) p *priv->gpu_bo
$3 = {rq = 0x1c28961, exec = 0x7f293f457070, proxy = 0x0, list = {next = 0x16b66e8, prev = 0x16b66e8}, request = {next = 0x1c28978, prev = 0x260e668}, vma = {next = 0x16b6708, prev = 0x16b6708}, map__cpu = 0x7f293f501000, map__gtt = 0x0, 
  binding = {next = 0x0, format = 192, offset = 65504}, presumed_offset = 102158336, unique_id = 304, refcnt = 1, handle = 40, target_handle = 2, delta = 0, size = {pages = {count = 3, bucket = 1}, bytes = 134217731}, pitch = 192, 
  tiling = 0, reusable = 1, gpu_dirty = 0, gtt_dirty = 0, domain = 1, needs_flush = 0, snoop = 0, io = 0, flush = 0, scanout = 0, purged = 0}
(gdb) x/30 0x7f293f500fe0
0x7f293f500fe0: 0x00000000      0x00000000      0x00000000      0x00000000
0x7f293f500ff0: 0x00000000      0x00000000      0x00000000      0x00000000
0x7f293f501000: 0x00000000      0x00000000      0x00000000      0x00000000
0x7f293f501010: 0x00000000      0x00000000      0x00000000      0x00000000
0x7f293f501020: 0x00000000      0x00000000      0x00000000      0x00000000
0x7f293f501030: 0x00000000      0x00000000      0x00000000      0x00000000
0x7f293f501040: 0x00000000      0x00000000      0x00000000      0x00000000
0x7f293f501050: 0x00000000      0x00000000